Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane
Kinetika reakcije 5-supstituisanih orotinskih kiselina sa dizaodifenilmetanom
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Rate konstants for the reaction of eight 5-substituted orotic acids with diazodiphenylmethane (DDM) in dimethylformamide (DMF) were determined at 30 ºC by the known spectrophotometricmethod. The determined rate constants were correlated with the equations: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h to detect the presence and investigate the influence of both electrical and steric substituent effects. The obtained results show that the electrical effect (the localized – field and delocalized – resonance) is predominant and that the steric effect, althought present, is releatively small in this reaction.
Konstante brzine za reakciju osam 5-spstituisanih orotinskih kiselina sa diazodifenilmetanom (DDM) određene su na 30 ºC u dimetilformamidu (DMF) kao rastvarač u, poznatom spektrofotometrijskim metodom. Konstante brzina ispitivanih reakcija korelisane su sledećim jednačinama: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h sa ciljem da se odrede efekti supstituenata. Dobijeni rezultati ukazuju na to da su električni efekti supstituenata (induktivni i rezonantni) preovlađujući, a da su sterni efekti supstituenata, iako su prisutni, u odnosu na njih relativno mali.
Кључне речи:
orotic acids / diazodiphenylmethane / reaction kinetics dimethylformamideИзвор:
Journal of the Serbian Chemical Society, 2004, 69, 11, 949-953Издавач:
- Serbian Chemical Society, Belgrade
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Jovanović, Bratislav Ž. AU - Assaleh, Fathi H. AU - Marinković, Aleksandar PY - 2004 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/631 AB - Rate konstants for the reaction of eight 5-substituted orotic acids with diazodiphenylmethane (DDM) in dimethylformamide (DMF) were determined at 30 ºC by the known spectrophotometricmethod. The determined rate constants were correlated with the equations: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h to detect the presence and investigate the influence of both electrical and steric substituent effects. The obtained results show that the electrical effect (the localized – field and delocalized – resonance) is predominant and that the steric effect, althought present, is releatively small in this reaction. AB - Konstante brzine za reakciju osam 5-spstituisanih orotinskih kiselina sa diazodifenilmetanom (DDM) određene su na 30 ºC u dimetilformamidu (DMF) kao rastvarač u, poznatom spektrofotometrijskim metodom. Konstante brzina ispitivanih reakcija korelisane su sledećim jednačinama: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h sa ciljem da se odrede efekti supstituenata. Dobijeni rezultati ukazuju na to da su električni efekti supstituenata (induktivni i rezonantni) preovlađujući, a da su sterni efekti supstituenata, iako su prisutni, u odnosu na njih relativno mali. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane T1 - Kinetika reakcije 5-supstituisanih orotinskih kiselina sa dizaodifenilmetanom EP - 953 IS - 11 SP - 949 VL - 69 UR - https://hdl.handle.net/21.15107/rcub_technorep_631 ER -
@article{ author = "Jovanović, Bratislav Ž. and Assaleh, Fathi H. and Marinković, Aleksandar", year = "2004", abstract = "Rate konstants for the reaction of eight 5-substituted orotic acids with diazodiphenylmethane (DDM) in dimethylformamide (DMF) were determined at 30 ºC by the known spectrophotometricmethod. The determined rate constants were correlated with the equations: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h to detect the presence and investigate the influence of both electrical and steric substituent effects. The obtained results show that the electrical effect (the localized – field and delocalized – resonance) is predominant and that the steric effect, althought present, is releatively small in this reaction., Konstante brzine za reakciju osam 5-spstituisanih orotinskih kiselina sa diazodifenilmetanom (DDM) određene su na 30 ºC u dimetilformamidu (DMF) kao rastvarač u, poznatom spektrofotometrijskim metodom. Konstante brzina ispitivanih reakcija korelisane su sledećim jednačinama: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h sa ciljem da se odrede efekti supstituenata. Dobijeni rezultati ukazuju na to da su električni efekti supstituenata (induktivni i rezonantni) preovlađujući, a da su sterni efekti supstituenata, iako su prisutni, u odnosu na njih relativno mali.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane, Kinetika reakcije 5-supstituisanih orotinskih kiselina sa dizaodifenilmetanom", pages = "953-949", number = "11", volume = "69", url = "https://hdl.handle.net/21.15107/rcub_technorep_631" }
Jovanović, B. Ž., Assaleh, F. H.,& Marinković, A.. (2004). Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 69(11), 949-953. https://hdl.handle.net/21.15107/rcub_technorep_631
Jovanović BŽ, Assaleh FH, Marinković A. Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane. in Journal of the Serbian Chemical Society. 2004;69(11):949-953. https://hdl.handle.net/21.15107/rcub_technorep_631 .
Jovanović, Bratislav Ž., Assaleh, Fathi H., Marinković, Aleksandar, "Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane" in Journal of the Serbian Chemical Society, 69, no. 11 (2004):949-953, https://hdl.handle.net/21.15107/rcub_technorep_631 .