TY  - JOUR
AU  - Mladenović, Aleksandar R.
AU  - Mijin, Dušan
AU  - Drmanić, Saša
AU  - Vajs, Vlatka
AU  - Jovanović, Vladislava M.
AU  - Petrović, Slobodan
AU  - Avramov-Ivić, Milka
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2820
AB  - The oxidative ability of donepezil, a frequently prescribed drug for the treatment of Alzheimer's disease is reported for the first time at a gold electrode. It was oxidized by cyclic voltammetry and determined by square wave voltammetry in phosphate buffer electrolyte. Electrochemical degradation of donepezil was carried out by long term potential cycling. The identification and characterization of the major product, isolated by preparative high performance liquid chromatography, was performed by high resolution mass spectrometry and 1D and 2D nuclear magnetic resonance spectroscopy. Donepezil hydroxy derivative was identified as the major electrochemical oxidation product from donepezil.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - Electrochemical Oxidation of Donepezil and Its Voltammetric Determination at Gold Electrode
EP  - 897
IS  - 5
SP  - 893
VL  - 26
DO  - 10.1002/elan.201400034
ER  - 

@article{
author = "Mladenović, Aleksandar R. and Mijin, Dušan and Drmanić, Saša and Vajs, Vlatka and Jovanović, Vladislava M. and Petrović, Slobodan and Avramov-Ivić, Milka",
year = "2014",
abstract = "The oxidative ability of donepezil, a frequently prescribed drug for the treatment of Alzheimer's disease is reported for the first time at a gold electrode. It was oxidized by cyclic voltammetry and determined by square wave voltammetry in phosphate buffer electrolyte. Electrochemical degradation of donepezil was carried out by long term potential cycling. The identification and characterization of the major product, isolated by preparative high performance liquid chromatography, was performed by high resolution mass spectrometry and 1D and 2D nuclear magnetic resonance spectroscopy. Donepezil hydroxy derivative was identified as the major electrochemical oxidation product from donepezil.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "Electrochemical Oxidation of Donepezil and Its Voltammetric Determination at Gold Electrode",
pages = "897-893",
number = "5",
volume = "26",
doi = "10.1002/elan.201400034"
}

Mladenović, A. R., Mijin, D., Drmanić, S., Vajs, V., Jovanović, V. M., Petrović, S.,& Avramov-Ivić, M.. (2014). Electrochemical Oxidation of Donepezil and Its Voltammetric Determination at Gold Electrode. in Electroanalysis
Wiley-VCH Verlag Gmbh, Weinheim., 26(5), 893-897.
https://doi.org/10.1002/elan.201400034

Mladenović AR, Mijin D, Drmanić S, Vajs V, Jovanović VM, Petrović S, Avramov-Ivić M. Electrochemical Oxidation of Donepezil and Its Voltammetric Determination at Gold Electrode. in Electroanalysis. 2014;26(5):893-897.
doi:10.1002/elan.201400034 .

Mladenović, Aleksandar R., Mijin, Dušan, Drmanić, Saša, Vajs, Vlatka, Jovanović, Vladislava M., Petrović, Slobodan, Avramov-Ivić, Milka, "Electrochemical Oxidation of Donepezil and Its Voltammetric Determination at Gold Electrode" in Electroanalysis, 26, no. 5 (2014):893-897,
https://doi.org/10.1002/elan.201400034 . .

TY  - JOUR
AU  - Marinković, Aleksandar
AU  - Jovanović, Bratislav Ž.
AU  - Assaleh, Fathi H.
AU  - Vajs, Vlatka
AU  - Juranić, Milan I.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2194
AB  - Linear free energy relationships (LFER) were applied to the kinetic data and C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids. The correlation analysis for the kinetic data and substituent-induced chemical shifts (SCS) with sigma using single substituent parameter (SSP), as well as inductive (sigma(I)) and various resonance (sigma(R)) parameters using dual-substituent parameter (DSP), were carried out. The presented calculations account satisfactorily for the polar and resonance substituent effects having similar contributions at all carbons studied. Negative rho values were found for several correlations (reverse substituent effect). Exceptionally good Hammett correlation of C-13 NMR chemical shifts of azomethine carbon with electrophilic substituent constants sigma(+) indicates a significant resonance interaction in the aniline part of molecules. The conformations of investigated compounds have been studied by the use of DFT method, and together with C-13 NMR chemical shifts and kinetic data, give a better insight into the influence of such a structure on the transmission of electronic substituent effects. New sigma constants for substituted phenyliminomethyl group have been calculated.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Molecular Structure
T1  - Linear free energy relationships applied to the reactivity and the C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids
EP  - 165
SP  - 158
VL  - 1011
DO  - 10.1016/j.molstruc.2010.11.004
ER  - 

@article{
author = "Marinković, Aleksandar and Jovanović, Bratislav Ž. and Assaleh, Fathi H. and Vajs, Vlatka and Juranić, Milan I.",
year = "2012",
abstract = "Linear free energy relationships (LFER) were applied to the kinetic data and C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids. The correlation analysis for the kinetic data and substituent-induced chemical shifts (SCS) with sigma using single substituent parameter (SSP), as well as inductive (sigma(I)) and various resonance (sigma(R)) parameters using dual-substituent parameter (DSP), were carried out. The presented calculations account satisfactorily for the polar and resonance substituent effects having similar contributions at all carbons studied. Negative rho values were found for several correlations (reverse substituent effect). Exceptionally good Hammett correlation of C-13 NMR chemical shifts of azomethine carbon with electrophilic substituent constants sigma(+) indicates a significant resonance interaction in the aniline part of molecules. The conformations of investigated compounds have been studied by the use of DFT method, and together with C-13 NMR chemical shifts and kinetic data, give a better insight into the influence of such a structure on the transmission of electronic substituent effects. New sigma constants for substituted phenyliminomethyl group have been calculated.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Linear free energy relationships applied to the reactivity and the C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids",
pages = "165-158",
volume = "1011",
doi = "10.1016/j.molstruc.2010.11.004"
}

Marinković, A., Jovanović, B. Ž., Assaleh, F. H., Vajs, V.,& Juranić, M. I.. (2012). Linear free energy relationships applied to the reactivity and the C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids. in Journal of Molecular Structure
Elsevier Science Bv, Amsterdam., 1011, 158-165.
https://doi.org/10.1016/j.molstruc.2010.11.004

Marinković A, Jovanović BŽ, Assaleh FH, Vajs V, Juranić MI. Linear free energy relationships applied to the reactivity and the C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids. in Journal of Molecular Structure. 2012;1011:158-165.
doi:10.1016/j.molstruc.2010.11.004 .

Marinković, Aleksandar, Jovanović, Bratislav Ž., Assaleh, Fathi H., Vajs, Vlatka, Juranić, Milan I., "Linear free energy relationships applied to the reactivity and the C-13 NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids" in Journal of Molecular Structure, 1011 (2012):158-165,
https://doi.org/10.1016/j.molstruc.2010.11.004 . .

TY  - JOUR
AU  - Aljančić, Ivana
AU  - Pešić, Milica
AU  - Milosavljević, Slobodan M.
AU  - Todorović, Nina
AU  - Jadranin, Milka
AU  - Miosavljević, Goran
AU  - Povrenović, Dragan
AU  - Banković, Jasna
AU  - Tanić, Nikola
AU  - Marković, Ivanka
AU  - Ruzdijić, Sabera
AU  - Vajs, Vlatka
AU  - Tešević, Vele
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1943
AB  - From the Montenegrin spurge Euphorbia dendroides, seven new diterpenoids [jatrophanes (1-6) and a tigliane (7)] were isolated and their structures elucidated by spectroscopic techniques. The biological activity of the new compounds was studied against four human cancer cell lines. The most effective jatrophane-type compound (2) and its structurally closely related derivative (1) were evaluated for their interactions with paclitaxel and doxorubicin using a multidrug-resistant cancer cell line. Both compounds exerted a strong reversal potential resulting from inhibition of P-glycoprotein transport.
PB  - Amer Chemical Soc, Washington
T2  - Journal of Natural Products
T1  - Isolation and Biological Evaluation of Jatrophane Diterpenoids from Euphorbia dendroides
EP  - 1620
IS  - 7
SP  - 1613
VL  - 74
DO  - 10.1021/np200241c
ER  - 

@article{
author = "Aljančić, Ivana and Pešić, Milica and Milosavljević, Slobodan M. and Todorović, Nina and Jadranin, Milka and Miosavljević, Goran and Povrenović, Dragan and Banković, Jasna and Tanić, Nikola and Marković, Ivanka and Ruzdijić, Sabera and Vajs, Vlatka and Tešević, Vele",
year = "2011",
abstract = "From the Montenegrin spurge Euphorbia dendroides, seven new diterpenoids [jatrophanes (1-6) and a tigliane (7)] were isolated and their structures elucidated by spectroscopic techniques. The biological activity of the new compounds was studied against four human cancer cell lines. The most effective jatrophane-type compound (2) and its structurally closely related derivative (1) were evaluated for their interactions with paclitaxel and doxorubicin using a multidrug-resistant cancer cell line. Both compounds exerted a strong reversal potential resulting from inhibition of P-glycoprotein transport.",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Natural Products",
title = "Isolation and Biological Evaluation of Jatrophane Diterpenoids from Euphorbia dendroides",
pages = "1620-1613",
number = "7",
volume = "74",
doi = "10.1021/np200241c"
}

Aljančić, I., Pešić, M., Milosavljević, S. M., Todorović, N., Jadranin, M., Miosavljević, G., Povrenović, D., Banković, J., Tanić, N., Marković, I., Ruzdijić, S., Vajs, V.,& Tešević, V.. (2011). Isolation and Biological Evaluation of Jatrophane Diterpenoids from Euphorbia dendroides. in Journal of Natural Products
Amer Chemical Soc, Washington., 74(7), 1613-1620.
https://doi.org/10.1021/np200241c

Aljančić I, Pešić M, Milosavljević SM, Todorović N, Jadranin M, Miosavljević G, Povrenović D, Banković J, Tanić N, Marković I, Ruzdijić S, Vajs V, Tešević V. Isolation and Biological Evaluation of Jatrophane Diterpenoids from Euphorbia dendroides. in Journal of Natural Products. 2011;74(7):1613-1620.
doi:10.1021/np200241c .

Aljančić, Ivana, Pešić, Milica, Milosavljević, Slobodan M., Todorović, Nina, Jadranin, Milka, Miosavljević, Goran, Povrenović, Dragan, Banković, Jasna, Tanić, Nikola, Marković, Ivanka, Ruzdijić, Sabera, Vajs, Vlatka, Tešević, Vele, "Isolation and Biological Evaluation of Jatrophane Diterpenoids from Euphorbia dendroides" in Journal of Natural Products, 74, no. 7 (2011):1613-1620,
https://doi.org/10.1021/np200241c . .

TY  - JOUR
AU  - Ivanović, Jasna
AU  - Đilas, Sonja
AU  - Jadranin, Milka
AU  - Vajs, Vlatka
AU  - Babović, Nada
AU  - Petrović, Slobodan
AU  - Žižović, Irena
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1386
AB  - The aim of the present study was to isolate and characterize antioxidant extracts obtained from dried leaves of rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.), originating from the southern Balkan Region. The antioxidant fraction was isolated from the plant material by supercritical carbon dioxide (SC-CO2) fractional extraction under a pressure of 30 MPa and at temperatures of 40 and 100°C. In the present study, kinetic data and yields of antioxidant extracts obtained from dried leaves of rosemary and sage under different conditions were determined. Electron spin resonance (ESR) spectroscopy assay on the ability of the extracts to scavenge stable 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals and reactive hydroxyl radicals during the Fenton reaction trapped by 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) showed that the investigated extracts had antioxidant activity comparable to that of butylated hydroxyanisole (BHA) and commercial rosemary extract. The antioxidant fractions isolated at the higher temperature had higher antioxidant activities. A tentative analysis of the chemical composition of the antioxidant fractions obtained at the higher temperature was accomplished by LC-DAD and LC-MS analytical methods. Abietane-type diterpenoids, flavonoids and fatty acids were identified in the SC-CO2 extract of rosemary and sage.
AB  - Cilj ovog rada bio je izolacija i karakterizacija antioksidativnih ekstrakata ruzmarina (Rosmarinus officinalis L.) i žalfije (Salvia officinalis L.) sa područja južnog Balkana. Antioksidativna frakcija izolovana je iz biljnog materijala primenom frakcione ekstrakcije sa natkritičnim ugljenik(IV)-oksidom na pritisku od 30 MPa i na temperaturama od 40 i 100°C. U ovom radu su prikazani rezultati ispitivanja kinetike natkritične ekstrakcije antioksidativnih frakcija iz ruzmarina i žalfije na različitim uslovima. Elektron spin rezonantna (ESR) spektralna analiza uticaja antioksidativnih ekstrakata ruzmarina i žalfije na transformaciju stabilnih 2,2-difenil-1-pikrilhidrazil (DPPH) radikala kao i na stvaranje i transformaciju reaktivnih hidroksilnih radikala obrazovanih u Fentonovoj reakciji u prisustvu 'spin-trapa' 5,5-dimetil-1-pirolin-N-oksida (DMPO), pokazala je da ispitivani ekstrakti imaju antioksidativnu aktivnost uporedivu sa butilovanim hidroksianizolom (BHA) i komercijalnim ruzmarinskim antioksidansom. Antioksidativne frakcije ruzmarina i žalfije izolovane na višoj temperaturi pokazale su veću antioksidativnu aktivnost. Za preliminarnu analizu hemijskog sastava antioksidativnih ekstrakata izolovanih na višoj temperaturi korišćena je tečna hromatografija (LC) sa detektorom sa nizom dioda (DAD) i tečna hromatografija (LC) sa masenom spektrometrijom (MS). Ekstrakti ruzmarina i žalfije sadržali su abijetanske terpenoide, flavonoide i masne kiseline.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Supercritical carbon dioxide extraction of antioxidants from rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.)
T1  - Natkritična ekstrakcija antioksidanasa iz ruzmarina (Rosmarinus officinalis L.) i žalfije (Salvia officinalis L.)
EP  - 732
IS  - 7
SP  - 717
VL  - 74
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1386
ER  - 

@article{
author = "Ivanović, Jasna and Đilas, Sonja and Jadranin, Milka and Vajs, Vlatka and Babović, Nada and Petrović, Slobodan and Žižović, Irena",
year = "2009",
abstract = "The aim of the present study was to isolate and characterize antioxidant extracts obtained from dried leaves of rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.), originating from the southern Balkan Region. The antioxidant fraction was isolated from the plant material by supercritical carbon dioxide (SC-CO2) fractional extraction under a pressure of 30 MPa and at temperatures of 40 and 100°C. In the present study, kinetic data and yields of antioxidant extracts obtained from dried leaves of rosemary and sage under different conditions were determined. Electron spin resonance (ESR) spectroscopy assay on the ability of the extracts to scavenge stable 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals and reactive hydroxyl radicals during the Fenton reaction trapped by 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) showed that the investigated extracts had antioxidant activity comparable to that of butylated hydroxyanisole (BHA) and commercial rosemary extract. The antioxidant fractions isolated at the higher temperature had higher antioxidant activities. A tentative analysis of the chemical composition of the antioxidant fractions obtained at the higher temperature was accomplished by LC-DAD and LC-MS analytical methods. Abietane-type diterpenoids, flavonoids and fatty acids were identified in the SC-CO2 extract of rosemary and sage., Cilj ovog rada bio je izolacija i karakterizacija antioksidativnih ekstrakata ruzmarina (Rosmarinus officinalis L.) i žalfije (Salvia officinalis L.) sa područja južnog Balkana. Antioksidativna frakcija izolovana je iz biljnog materijala primenom frakcione ekstrakcije sa natkritičnim ugljenik(IV)-oksidom na pritisku od 30 MPa i na temperaturama od 40 i 100°C. U ovom radu su prikazani rezultati ispitivanja kinetike natkritične ekstrakcije antioksidativnih frakcija iz ruzmarina i žalfije na različitim uslovima. Elektron spin rezonantna (ESR) spektralna analiza uticaja antioksidativnih ekstrakata ruzmarina i žalfije na transformaciju stabilnih 2,2-difenil-1-pikrilhidrazil (DPPH) radikala kao i na stvaranje i transformaciju reaktivnih hidroksilnih radikala obrazovanih u Fentonovoj reakciji u prisustvu 'spin-trapa' 5,5-dimetil-1-pirolin-N-oksida (DMPO), pokazala je da ispitivani ekstrakti imaju antioksidativnu aktivnost uporedivu sa butilovanim hidroksianizolom (BHA) i komercijalnim ruzmarinskim antioksidansom. Antioksidativne frakcije ruzmarina i žalfije izolovane na višoj temperaturi pokazale su veću antioksidativnu aktivnost. Za preliminarnu analizu hemijskog sastava antioksidativnih ekstrakata izolovanih na višoj temperaturi korišćena je tečna hromatografija (LC) sa detektorom sa nizom dioda (DAD) i tečna hromatografija (LC) sa masenom spektrometrijom (MS). Ekstrakti ruzmarina i žalfije sadržali su abijetanske terpenoide, flavonoide i masne kiseline.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Supercritical carbon dioxide extraction of antioxidants from rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.), Natkritična ekstrakcija antioksidanasa iz ruzmarina (Rosmarinus officinalis L.) i žalfije (Salvia officinalis L.)",
pages = "732-717",
number = "7",
volume = "74",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1386"
}

Ivanović, J., Đilas, S., Jadranin, M., Vajs, V., Babović, N., Petrović, S.,& Žižović, I.. (2009). Supercritical carbon dioxide extraction of antioxidants from rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.). in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 74(7), 717-732.
https://hdl.handle.net/21.15107/rcub_technorep_1386

Ivanović J, Đilas S, Jadranin M, Vajs V, Babović N, Petrović S, Žižović I. Supercritical carbon dioxide extraction of antioxidants from rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.). in Journal of the Serbian Chemical Society. 2009;74(7):717-732.
https://hdl.handle.net/21.15107/rcub_technorep_1386 .

Ivanović, Jasna, Đilas, Sonja, Jadranin, Milka, Vajs, Vlatka, Babović, Nada, Petrović, Slobodan, Žižović, Irena, "Supercritical carbon dioxide extraction of antioxidants from rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.)" in Journal of the Serbian Chemical Society, 74, no. 7 (2009):717-732,
https://hdl.handle.net/21.15107/rcub_technorep_1386 .

TY  - JOUR
AU  - Dekic, Sanja
AU  - Milosavljević, Slobodan M.
AU  - Vajs, Vlatka
AU  - Jović, Slobodan
AU  - Petrović, Aleksandar
AU  - Nikićević, Ninoslav
AU  - Manojlović, Verica
AU  - Nedović, Viktor A.
AU  - Tešević, Vele
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5582
AB  - Resveratrol, which occurs in two isomeric forms, trans and cis, is a phytoalexin with numerous pharmacological activities, such as anti-cancer, antiviral, neuroprotective and anti-aging. Red wine is the main source of the compound and an easy way of including resveratrol in the human diet. In this study, the most popular commercial Serbian wines (red, white and rose-type) were analyzed for their content of trans- and cis-resveratrol. The analysis was performed by HPLC with a UV detector. Prior to the injection, phenolic compounds were extracted onto a LiChrolut RP18 bonded silica cartridge. The concentration of trans-resveratrol ranged from 0.11 to 1.69 mg L-1 and cis-resveratrol from 0.12 to 1.49 mg L-1.
AB  - Metodom tečne hromatografije (HPLC) ispitan je sadržaj slobodnog oblika trans- i cis-rezveratrola u osamnaest komercijalnih uzoraka (10 crvenih, 7 belih i 1 roze) srpskih vina. Svi uzorci su pre hromatografije ekstrahovani SPE tehnikom na LiChrolut RP18 koloni. trans-Rezveratrol je detektovan u 17 od 18 analiziranih uzoraka vina sa prosečnom koncentracijama od 0,78 mg l-1 za crvena vina i 0,23 mg l-1 za bela vina. Najviša koncentracija trans-rezveratrola je nađena u uzorku crvenog vina Cabernet Sauvignon berbe 2002 godine. cis-Rezveratrol je detektovan u 12 od 18 analiziranih uzoraka vina sa prosečnom koncentracijom 0,55 mg l-1 za crvena vina, dok je u belim vinima od analiziranih 7 uzoraka detektovan samo u 2 uzorka sa koncentracijama 0,12 i 0,49 mg l-1. Visok sadržaj cis-rezveratrola u nekim uzorcima je verovatno posledica izomerizacije trans- u cis-rezveratrol tokom procesa proizvodnje vina.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Trans- and cis-resveratrol concentration in wines produced in Serbia
T1  - Koncentracija trans- i cis-rezveratrola u vinima proizvedenim u Srbiji
EP  - 1037
IS  - 11
SP  - 1027
VL  - 73
DO  - 10.2298/JSC0811027D
ER  - 

@article{
author = "Dekic, Sanja and Milosavljević, Slobodan M. and Vajs, Vlatka and Jović, Slobodan and Petrović, Aleksandar and Nikićević, Ninoslav and Manojlović, Verica and Nedović, Viktor A. and Tešević, Vele",
year = "2008",
abstract = "Resveratrol, which occurs in two isomeric forms, trans and cis, is a phytoalexin with numerous pharmacological activities, such as anti-cancer, antiviral, neuroprotective and anti-aging. Red wine is the main source of the compound and an easy way of including resveratrol in the human diet. In this study, the most popular commercial Serbian wines (red, white and rose-type) were analyzed for their content of trans- and cis-resveratrol. The analysis was performed by HPLC with a UV detector. Prior to the injection, phenolic compounds were extracted onto a LiChrolut RP18 bonded silica cartridge. The concentration of trans-resveratrol ranged from 0.11 to 1.69 mg L-1 and cis-resveratrol from 0.12 to 1.49 mg L-1., Metodom tečne hromatografije (HPLC) ispitan je sadržaj slobodnog oblika trans- i cis-rezveratrola u osamnaest komercijalnih uzoraka (10 crvenih, 7 belih i 1 roze) srpskih vina. Svi uzorci su pre hromatografije ekstrahovani SPE tehnikom na LiChrolut RP18 koloni. trans-Rezveratrol je detektovan u 17 od 18 analiziranih uzoraka vina sa prosečnom koncentracijama od 0,78 mg l-1 za crvena vina i 0,23 mg l-1 za bela vina. Najviša koncentracija trans-rezveratrola je nađena u uzorku crvenog vina Cabernet Sauvignon berbe 2002 godine. cis-Rezveratrol je detektovan u 12 od 18 analiziranih uzoraka vina sa prosečnom koncentracijom 0,55 mg l-1 za crvena vina, dok je u belim vinima od analiziranih 7 uzoraka detektovan samo u 2 uzorka sa koncentracijama 0,12 i 0,49 mg l-1. Visok sadržaj cis-rezveratrola u nekim uzorcima je verovatno posledica izomerizacije trans- u cis-rezveratrol tokom procesa proizvodnje vina.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Trans- and cis-resveratrol concentration in wines produced in Serbia, Koncentracija trans- i cis-rezveratrola u vinima proizvedenim u Srbiji",
pages = "1037-1027",
number = "11",
volume = "73",
doi = "10.2298/JSC0811027D"
}

Dekic, S., Milosavljević, S. M., Vajs, V., Jović, S., Petrović, A., Nikićević, N., Manojlović, V., Nedović, V. A.,& Tešević, V.. (2008). Trans- and cis-resveratrol concentration in wines produced in Serbia. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 73(11), 1027-1037.
https://doi.org/10.2298/JSC0811027D

Dekic S, Milosavljević SM, Vajs V, Jović S, Petrović A, Nikićević N, Manojlović V, Nedović VA, Tešević V. Trans- and cis-resveratrol concentration in wines produced in Serbia. in Journal of the Serbian Chemical Society. 2008;73(11):1027-1037.
doi:10.2298/JSC0811027D .

Dekic, Sanja, Milosavljević, Slobodan M., Vajs, Vlatka, Jović, Slobodan, Petrović, Aleksandar, Nikićević, Ninoslav, Manojlović, Verica, Nedović, Viktor A., Tešević, Vele, "Trans- and cis-resveratrol concentration in wines produced in Serbia" in Journal of the Serbian Chemical Society, 73, no. 11 (2008):1027-1037,
https://doi.org/10.2298/JSC0811027D . .

TY  - JOUR
AU  - Nevešćanin, Marina
AU  - Banović-Stević, Sonja
AU  - Petrović, Slobodan
AU  - Vajs, Vlatka
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1344
AB  - Forensic practice in the Republic of Serbia faced the illegal production of amphetamine for the first time in 2003. This paper presents the results of the chemical characterization of 32 batches of amphetamine samples from three separate cases, for the purpose of identification of the active components and additives. Through the profiling of impurities of all samples, using gas chromatography/mass spectrometry (GC/MS), 30 compounds associated with amphetamine were identified. The results of the analysis of powder tartrate, sulfate and phosphate salts of amphetamine, as well as variously formulated tablets are presented in this study. The analyses showed that the amphetamines were synthesized by the Leuckart method in all cases.
AB  - Forenzička praksa u Republici Srbiji se prvi put srela sa ilegalnom proizvodnjom amfetamina 2003. godine. U ovom radu predstavljeni su rezultati hemijske karakterizacije 32 vrste uzoraka amfetamina koji potiču iz tri odvojena slučaja u cilju identifikacije aktivnih komponenti i aditiva. Profilisanjem nečistoća svih uzoraka pomoću gasno-masene spektrometrije identifikovano je 30 jedinjenja povezanih sa amfetaminom. Dati su rezultati analiza praškastih tartaratnih, sulfatnih i fosfatnih soli amfetamina kao i različito formulisanih tableta. Analize nečistoća su pokazale da je u svim slučajevima sinteza amfetamina vršena Leuckart-ovom reakcijom.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Analysis of amphetamines illegally produced in Serbia
T1  - Analiza amfetamina ilegalno proizvedenog u Srbiji
EP  - 701
IS  - 7
SP  - 691
VL  - 73
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1344
ER  - 

@article{
author = "Nevešćanin, Marina and Banović-Stević, Sonja and Petrović, Slobodan and Vajs, Vlatka",
year = "2008",
abstract = "Forensic practice in the Republic of Serbia faced the illegal production of amphetamine for the first time in 2003. This paper presents the results of the chemical characterization of 32 batches of amphetamine samples from three separate cases, for the purpose of identification of the active components and additives. Through the profiling of impurities of all samples, using gas chromatography/mass spectrometry (GC/MS), 30 compounds associated with amphetamine were identified. The results of the analysis of powder tartrate, sulfate and phosphate salts of amphetamine, as well as variously formulated tablets are presented in this study. The analyses showed that the amphetamines were synthesized by the Leuckart method in all cases., Forenzička praksa u Republici Srbiji se prvi put srela sa ilegalnom proizvodnjom amfetamina 2003. godine. U ovom radu predstavljeni su rezultati hemijske karakterizacije 32 vrste uzoraka amfetamina koji potiču iz tri odvojena slučaja u cilju identifikacije aktivnih komponenti i aditiva. Profilisanjem nečistoća svih uzoraka pomoću gasno-masene spektrometrije identifikovano je 30 jedinjenja povezanih sa amfetaminom. Dati su rezultati analiza praškastih tartaratnih, sulfatnih i fosfatnih soli amfetamina kao i različito formulisanih tableta. Analize nečistoća su pokazale da je u svim slučajevima sinteza amfetamina vršena Leuckart-ovom reakcijom.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Analysis of amphetamines illegally produced in Serbia, Analiza amfetamina ilegalno proizvedenog u Srbiji",
pages = "701-691",
number = "7",
volume = "73",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1344"
}

Nevešćanin, M., Banović-Stević, S., Petrović, S.,& Vajs, V.. (2008). Analysis of amphetamines illegally produced in Serbia. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 73(7), 691-701.
https://hdl.handle.net/21.15107/rcub_technorep_1344

Nevešćanin M, Banović-Stević S, Petrović S, Vajs V. Analysis of amphetamines illegally produced in Serbia. in Journal of the Serbian Chemical Society. 2008;73(7):691-701.
https://hdl.handle.net/21.15107/rcub_technorep_1344 .

Nevešćanin, Marina, Banović-Stević, Sonja, Petrović, Slobodan, Vajs, Vlatka, "Analysis of amphetamines illegally produced in Serbia" in Journal of the Serbian Chemical Society, 73, no. 7 (2008):691-701,
https://hdl.handle.net/21.15107/rcub_technorep_1344 .

TY  - JOUR
AU  - Ušćumlić, Gordana
AU  - Mijin, Dušan
AU  - Valentić, Nataša
AU  - Vajs, Vlatka
AU  - Susić, BM
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/701
AB  - Absorption spectra of ten 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones have been recorded in fifteen solvents in the range 200-600 nm. The substituents at the phenyl nucleus are as follows: OH, OCH3, CH3, C2H5 H, Cl, Br, I, COOH and NO2. The effects of substituents on the absorption spectra of investigated compounds are interpreted by correlation of absorption frequencies with simple Hammett equation. The effects of solvent polarity and solvent/solute hydrogen bonding interactions are analyzed by means of linear solvation energy relationships concept proposed by Kamlet and Taft. The azo-hydrazone tuatomeric equilibration is found to depend upon substituents as well as on solvents.
PB  - Elsevier, Amsterdam
T2  - Chemical Physics Letters
T1  - Substituent and solvent effects on the UV/Vis absorption spectra of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones
EP  - 153
IS  - 1-3
SP  - 148
VL  - 397
DO  - 10.1016/j.cplett.2004.07.057
ER  - 

@article{
author = "Ušćumlić, Gordana and Mijin, Dušan and Valentić, Nataša and Vajs, Vlatka and Susić, BM",
year = "2004",
abstract = "Absorption spectra of ten 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones have been recorded in fifteen solvents in the range 200-600 nm. The substituents at the phenyl nucleus are as follows: OH, OCH3, CH3, C2H5 H, Cl, Br, I, COOH and NO2. The effects of substituents on the absorption spectra of investigated compounds are interpreted by correlation of absorption frequencies with simple Hammett equation. The effects of solvent polarity and solvent/solute hydrogen bonding interactions are analyzed by means of linear solvation energy relationships concept proposed by Kamlet and Taft. The azo-hydrazone tuatomeric equilibration is found to depend upon substituents as well as on solvents.",
publisher = "Elsevier, Amsterdam",
journal = "Chemical Physics Letters",
title = "Substituent and solvent effects on the UV/Vis absorption spectra of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones",
pages = "153-148",
number = "1-3",
volume = "397",
doi = "10.1016/j.cplett.2004.07.057"
}

Ušćumlić, G., Mijin, D., Valentić, N., Vajs, V.,& Susić, B.. (2004). Substituent and solvent effects on the UV/Vis absorption spectra of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones. in Chemical Physics Letters
Elsevier, Amsterdam., 397(1-3), 148-153.
https://doi.org/10.1016/j.cplett.2004.07.057

Ušćumlić G, Mijin D, Valentić N, Vajs V, Susić B. Substituent and solvent effects on the UV/Vis absorption spectra of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones. in Chemical Physics Letters. 2004;397(1-3):148-153.
doi:10.1016/j.cplett.2004.07.057 .

Ušćumlić, Gordana, Mijin, Dušan, Valentić, Nataša, Vajs, Vlatka, Susić, BM, "Substituent and solvent effects on the UV/Vis absorption spectra of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones" in Chemical Physics Letters, 397, no. 1-3 (2004):148-153,
https://doi.org/10.1016/j.cplett.2004.07.057 . .

TY  - JOUR
AU  - Jovanović, Bratislav Ž.
AU  - Misić-Vuković, Milica
AU  - Marinković, Aleksandar
AU  - Vajs, Vlatka
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/431
AB  - C-13 chemical shifts of the azomethine carbon atom for N-(phenyl substituted)pyridine-3-aldimines, 3-Py-CH=N-C6H4-X, and N-(phenyl substituted)pyridine-2-aldimines, 2-Py-CH=N-C6H4-X, having a wide range of substituent effects, were determined in CDCl3 solution. Exceptionally good Hammett correlation of the C-13 NMR chemical shifts of azomethine carbons with electrophilic substituent constants sigma(+) indicate strong resonance interaction of the substituents on the aniline ring with the azomethine carbon atom of the investigated series of imines. The demand for electrons in the investigated systems may be compared to that of the N-benzylidenanilines and N-(phenyl substituted)pyridine-4-aldimines. The mode of transmission of the substituent effects, both inductive and resonance, in all four systems, was discussed.
PB  - Elsevier, Amsterdam
T2  - Journal of Molecular Structure
T1  - Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted)pyridine-3-and-2-aldimines
EP  - 118
IS  - 1-3
SP  - 113
VL  - 642
DO  - 10.1016/S0022-2860(02)00403-9
ER  - 

@article{
author = "Jovanović, Bratislav Ž. and Misić-Vuković, Milica and Marinković, Aleksandar and Vajs, Vlatka",
year = "2002",
abstract = "C-13 chemical shifts of the azomethine carbon atom for N-(phenyl substituted)pyridine-3-aldimines, 3-Py-CH=N-C6H4-X, and N-(phenyl substituted)pyridine-2-aldimines, 2-Py-CH=N-C6H4-X, having a wide range of substituent effects, were determined in CDCl3 solution. Exceptionally good Hammett correlation of the C-13 NMR chemical shifts of azomethine carbons with electrophilic substituent constants sigma(+) indicate strong resonance interaction of the substituents on the aniline ring with the azomethine carbon atom of the investigated series of imines. The demand for electrons in the investigated systems may be compared to that of the N-benzylidenanilines and N-(phenyl substituted)pyridine-4-aldimines. The mode of transmission of the substituent effects, both inductive and resonance, in all four systems, was discussed.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted)pyridine-3-and-2-aldimines",
pages = "118-113",
number = "1-3",
volume = "642",
doi = "10.1016/S0022-2860(02)00403-9"
}

Jovanović, B. Ž., Misić-Vuković, M., Marinković, A.,& Vajs, V.. (2002). Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted)pyridine-3-and-2-aldimines. in Journal of Molecular Structure
Elsevier, Amsterdam., 642(1-3), 113-118.
https://doi.org/10.1016/S0022-2860(02)00403-9

Jovanović BŽ, Misić-Vuković M, Marinković A, Vajs V. Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted)pyridine-3-and-2-aldimines. in Journal of Molecular Structure. 2002;642(1-3):113-118.
doi:10.1016/S0022-2860(02)00403-9 .

Jovanović, Bratislav Ž., Misić-Vuković, Milica, Marinković, Aleksandar, Vajs, Vlatka, "Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted)pyridine-3-and-2-aldimines" in Journal of Molecular Structure, 642, no. 1-3 (2002):113-118,
https://doi.org/10.1016/S0022-2860(02)00403-9 . .

TY  - JOUR
AU  - Jovanović, Bratislav Ž.
AU  - Perić-Grujić, Aleksandra
AU  - Marinković, Aleksandar
AU  - Vajs, Vlatka
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/436
AB  - Mass spectrometry has been applied in order to study the main fragmentation routes of some 4-pyrimidene carboxylic acids. Differences in fragmentation were caused by the nature of the substituent in position 2 of the pyrimidine ring, while the methyl group in position 1, 3 or 6 did not influence the fragmentation route.
PB  - Wiley, Hoboken
T2  - Rapid Communications in Mass Spectrometry
T1  - Mass spectrometric study of some 4-pyrimidine carboxylic acids
EP  - 2047
IS  - 21
SP  - 2044
VL  - 16
DO  - 10.1002/rcm.825
ER  - 

@article{
author = "Jovanović, Bratislav Ž. and Perić-Grujić, Aleksandra and Marinković, Aleksandar and Vajs, Vlatka",
year = "2002",
abstract = "Mass spectrometry has been applied in order to study the main fragmentation routes of some 4-pyrimidene carboxylic acids. Differences in fragmentation were caused by the nature of the substituent in position 2 of the pyrimidine ring, while the methyl group in position 1, 3 or 6 did not influence the fragmentation route.",
publisher = "Wiley, Hoboken",
journal = "Rapid Communications in Mass Spectrometry",
title = "Mass spectrometric study of some 4-pyrimidine carboxylic acids",
pages = "2047-2044",
number = "21",
volume = "16",
doi = "10.1002/rcm.825"
}

Jovanović, B. Ž., Perić-Grujić, A., Marinković, A.,& Vajs, V.. (2002). Mass spectrometric study of some 4-pyrimidine carboxylic acids. in Rapid Communications in Mass Spectrometry
Wiley, Hoboken., 16(21), 2044-2047.
https://doi.org/10.1002/rcm.825

Jovanović BŽ, Perić-Grujić A, Marinković A, Vajs V. Mass spectrometric study of some 4-pyrimidine carboxylic acids. in Rapid Communications in Mass Spectrometry. 2002;16(21):2044-2047.
doi:10.1002/rcm.825 .

Jovanović, Bratislav Ž., Perić-Grujić, Aleksandra, Marinković, Aleksandar, Vajs, Vlatka, "Mass spectrometric study of some 4-pyrimidine carboxylic acids" in Rapid Communications in Mass Spectrometry, 16, no. 21 (2002):2044-2047,
https://doi.org/10.1002/rcm.825 . .

TY  - JOUR
AU  - Jovanović, Bratislav Ž.
AU  - Misić-Vuković, Milica
AU  - Marinković, Aleksandar
AU  - Vajs, Vlatka
PY  - 1999
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/257
AB  - C-13 chemical shifts of the azomethine carbon atom for N-(substituted phenyl)pyridine-4-aldimines, 4-Py-CH=N-C6H4-X, X having a wide range of substituent effects, have been determined in CDCl3 solution. Exceptionally good Hammett correlations of C-13 NMR chemical shifts of azomethine carbons with electrophilic substituent constants sigma(+) points out to a strong resonance interaction of substituents on the aniline ring with the azomethine carbon atom of the investigated imines. The increased demand for electrons in the investigated system is being compared with that of the N-benzylidenaniline. The mode of transmission of substituent effects, both inductive and resonance, in both systems, is discussed.
PB  - Elsevier, Amsterdam
T2  - Journal of Molecular Structure
T1  - Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted) pyridine-4-aldimines
EP  - 378
SP  - 375
VL  - 482
DO  - 10.1016/S0022-2860(98)00860-6
ER  - 

@article{
author = "Jovanović, Bratislav Ž. and Misić-Vuković, Milica and Marinković, Aleksandar and Vajs, Vlatka",
year = "1999",
abstract = "C-13 chemical shifts of the azomethine carbon atom for N-(substituted phenyl)pyridine-4-aldimines, 4-Py-CH=N-C6H4-X, X having a wide range of substituent effects, have been determined in CDCl3 solution. Exceptionally good Hammett correlations of C-13 NMR chemical shifts of azomethine carbons with electrophilic substituent constants sigma(+) points out to a strong resonance interaction of substituents on the aniline ring with the azomethine carbon atom of the investigated imines. The increased demand for electrons in the investigated system is being compared with that of the N-benzylidenaniline. The mode of transmission of substituent effects, both inductive and resonance, in both systems, is discussed.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted) pyridine-4-aldimines",
pages = "378-375",
volume = "482",
doi = "10.1016/S0022-2860(98)00860-6"
}

Jovanović, B. Ž., Misić-Vuković, M., Marinković, A.,& Vajs, V.. (1999). Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted) pyridine-4-aldimines. in Journal of Molecular Structure
Elsevier, Amsterdam., 482, 375-378.
https://doi.org/10.1016/S0022-2860(98)00860-6

Jovanović BŽ, Misić-Vuković M, Marinković A, Vajs V. Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted) pyridine-4-aldimines. in Journal of Molecular Structure. 1999;482:375-378.
doi:10.1016/S0022-2860(98)00860-6 .

Jovanović, Bratislav Ž., Misić-Vuković, Milica, Marinković, Aleksandar, Vajs, Vlatka, "Effect of substituents on the C-13 chemical shifts of the azomethine carbon atom of N-(phenyl substituted) pyridine-4-aldimines" in Journal of Molecular Structure, 482 (1999):375-378,
https://doi.org/10.1016/S0022-2860(98)00860-6 . .

TY  - JOUR
AU  - Vajs, Vlatka
AU  - Milosavljević, Slobodan
AU  - Tešević, Vele
AU  - Zivanović, P
AU  - Jančić, Radmila
AU  - Todorović, B
AU  - Slavkovska, V
PY  - 1995
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/67
PB  - Taylor & Francis
T2  - Journal of Essential Oil Research
T1  - Chaerophyllum coloratum L.: Essential oils of ripe fruits and umbels
EP  - 531
IS  - 5
SP  - 529
VL  - 7
DO  - 10.1080/10412905.1995.9698578
ER  - 

@article{
author = "Vajs, Vlatka and Milosavljević, Slobodan and Tešević, Vele and Zivanović, P and Jančić, Radmila and Todorović, B and Slavkovska, V",
year = "1995",
publisher = "Taylor & Francis",
journal = "Journal of Essential Oil Research",
title = "Chaerophyllum coloratum L.: Essential oils of ripe fruits and umbels",
pages = "531-529",
number = "5",
volume = "7",
doi = "10.1080/10412905.1995.9698578"
}

Vajs, V., Milosavljević, S., Tešević, V., Zivanović, P., Jančić, R., Todorović, B.,& Slavkovska, V.. (1995). Chaerophyllum coloratum L.: Essential oils of ripe fruits and umbels. in Journal of Essential Oil Research
Taylor & Francis., 7(5), 529-531.
https://doi.org/10.1080/10412905.1995.9698578

Vajs V, Milosavljević S, Tešević V, Zivanović P, Jančić R, Todorović B, Slavkovska V. Chaerophyllum coloratum L.: Essential oils of ripe fruits and umbels. in Journal of Essential Oil Research. 1995;7(5):529-531.
doi:10.1080/10412905.1995.9698578 .

Vajs, Vlatka, Milosavljević, Slobodan, Tešević, Vele, Zivanović, P, Jančić, Radmila, Todorović, B, Slavkovska, V, "Chaerophyllum coloratum L.: Essential oils of ripe fruits and umbels" in Journal of Essential Oil Research, 7, no. 5 (1995):529-531,
https://doi.org/10.1080/10412905.1995.9698578 . .

TY  - JOUR
AU  - Jovanović, Bratislav Ž.
AU  - Perić, Aleksandra
AU  - Vajs, Vlatka
PY  - 1995
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/64
AB  - Mass spectrometry was used to study the main fragmentation routes of some 3‐alkyl‐5‐substituted‐6‐methyl uracils. Differences in fragmentation were caused by changes in the structure of the alkyl group in position 3 of the uracil ring, with the same substituent in position 5, and by differences in the substituent in position 5.
PB  - Wiley, Hoboken
T2  - Rapid Communications in Mass Spectrometry
T1  - Electron‐impact induced decomposition of some 3‐alkyl‐5‐substituted‐6‐methyl uracils
EP  - 855
IS  - 9
SP  - 854
VL  - 9
DO  - 10.1002/rcm.1290090927
ER  - 

@article{
author = "Jovanović, Bratislav Ž. and Perić, Aleksandra and Vajs, Vlatka",
year = "1995",
abstract = "Mass spectrometry was used to study the main fragmentation routes of some 3‐alkyl‐5‐substituted‐6‐methyl uracils. Differences in fragmentation were caused by changes in the structure of the alkyl group in position 3 of the uracil ring, with the same substituent in position 5, and by differences in the substituent in position 5.",
publisher = "Wiley, Hoboken",
journal = "Rapid Communications in Mass Spectrometry",
title = "Electron‐impact induced decomposition of some 3‐alkyl‐5‐substituted‐6‐methyl uracils",
pages = "855-854",
number = "9",
volume = "9",
doi = "10.1002/rcm.1290090927"
}

Jovanović, B. Ž., Perić, A.,& Vajs, V.. (1995). Electron‐impact induced decomposition of some 3‐alkyl‐5‐substituted‐6‐methyl uracils. in Rapid Communications in Mass Spectrometry
Wiley, Hoboken., 9(9), 854-855.
https://doi.org/10.1002/rcm.1290090927

Jovanović BŽ, Perić A, Vajs V. Electron‐impact induced decomposition of some 3‐alkyl‐5‐substituted‐6‐methyl uracils. in Rapid Communications in Mass Spectrometry. 1995;9(9):854-855.
doi:10.1002/rcm.1290090927 .

Jovanović, Bratislav Ž., Perić, Aleksandra, Vajs, Vlatka, "Electron‐impact induced decomposition of some 3‐alkyl‐5‐substituted‐6‐methyl uracils" in Rapid Communications in Mass Spectrometry, 9, no. 9 (1995):854-855,
https://doi.org/10.1002/rcm.1290090927 . .

TY  - JOUR
AU  - Antonović, Dušan
AU  - Vajs, Vlatka
AU  - Stojanović, N.D.
AU  - Nikolić, A.D.
AU  - Petrović, Slobodan
PY  - 1992
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/38
AB  - As a part of a study on the structural characteristics of some new various N-alkyl-N-substituted 2-phenylacetamides the infrared and 1H N.M.R. spectra were obtained and interpreted. The synthesis of a various N-n-propyl-N-alkyl 2-phenylacetamides of the general formula PhCH2CON(nPr)R, wherein R is ethyl, isopropyl, n-butyl, t-butyl and cyclohexyl, were performed. The corresponding mixed secondary amines of the type HNnPrR were obtained by catalytic hydrogenation of the synthetized propylidenealkylamines. The 1H N.M.R. spectra of these unsymmetrically N,N-disubstituted amides have been studied and the peaks have been assigned in each cases to two possible conformational isomers, arising from the lack of free rotation about the C(O)N bond. These results are in accordance with our previous investigation of the structure of N-substituted 2-phenylacetamides.
PB  - Elsevier, Amsterdam
T2  - Journal of Molecular Structure
T1  - Conformations in unsymmetrically N-n-propyl-N-substituted 2-phenylacetamides
EP  - 258
IS  - C
SP  - 255
VL  - 266
DO  - 10.1016/0022-2860(92)80075-S
ER  - 

@article{
author = "Antonović, Dušan and Vajs, Vlatka and Stojanović, N.D. and Nikolić, A.D. and Petrović, Slobodan",
year = "1992",
abstract = "As a part of a study on the structural characteristics of some new various N-alkyl-N-substituted 2-phenylacetamides the infrared and 1H N.M.R. spectra were obtained and interpreted. The synthesis of a various N-n-propyl-N-alkyl 2-phenylacetamides of the general formula PhCH2CON(nPr)R, wherein R is ethyl, isopropyl, n-butyl, t-butyl and cyclohexyl, were performed. The corresponding mixed secondary amines of the type HNnPrR were obtained by catalytic hydrogenation of the synthetized propylidenealkylamines. The 1H N.M.R. spectra of these unsymmetrically N,N-disubstituted amides have been studied and the peaks have been assigned in each cases to two possible conformational isomers, arising from the lack of free rotation about the C(O)N bond. These results are in accordance with our previous investigation of the structure of N-substituted 2-phenylacetamides.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Conformations in unsymmetrically N-n-propyl-N-substituted 2-phenylacetamides",
pages = "258-255",
number = "C",
volume = "266",
doi = "10.1016/0022-2860(92)80075-S"
}

Antonović, D., Vajs, V., Stojanović, N.D., Nikolić, A.D.,& Petrović, S.. (1992). Conformations in unsymmetrically N-n-propyl-N-substituted 2-phenylacetamides. in Journal of Molecular Structure
Elsevier, Amsterdam., 266(C), 255-258.
https://doi.org/10.1016/0022-2860(92)80075-S

Antonović D, Vajs V, Stojanović N, Nikolić A, Petrović S. Conformations in unsymmetrically N-n-propyl-N-substituted 2-phenylacetamides. in Journal of Molecular Structure. 1992;266(C):255-258.
doi:10.1016/0022-2860(92)80075-S .

Antonović, Dušan, Vajs, Vlatka, Stojanović, N.D., Nikolić, A.D., Petrović, Slobodan, "Conformations in unsymmetrically N-n-propyl-N-substituted 2-phenylacetamides" in Journal of Molecular Structure, 266, no. C (1992):255-258,
https://doi.org/10.1016/0022-2860(92)80075-S . .