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Novi postupak sinteze N-alkil- i N,N-dialkil-O-etil- i O-izopropiltiokarbamata oksidacijom aminskih soli ksantogene kiseline

dc.creatorMilisavljević, Smiljka S.
dc.creatorMarinković, Aleksandar
dc.creatorMilosavljević, Milutin M.
dc.date.accessioned2021-03-10T11:20:16Z
dc.date.available2021-03-10T11:20:16Z
dc.date.issued2010
dc.identifier.issn0367-598X
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1657
dc.description.abstractSyntheses of N-alkyl and N,N-dialkyl-O-ethyl and O-isopropyl thiocarbamates by oxidation of ammonium salts of ethyl- and isopropylxanthogenic acid in the presence of sodium hypochlorite and hydrogen peroxide were performed. Ammonium salts of ethyl - and isopropylxanthogenic acid was obtained by the reaction of alkylammonium sulfate and sodium ethyl and isopropyl xanthate. Dependence of N-ethyl-O-isopropylthiocarbamate yield and purity with respect to reaction parameters (reaction time, molar ratio of oxidant and ethylamonium salt of isopropylxanthogenic acid) were studied. Optimal reaction conditions for synthesis of N-alkyl and N,N-dialkyl-O-ethyl and O-isopropyl thiocarbamates were established. The synthesized compounds have been fully characterized by FTIR, 1H-NMR and MS data, while purities have been determined by GC method. A plausible pathway for the N-alkyl and N,N-dialkyl-O-ethyl and O-isopropyl thiocarbamates synthesis in the presence of the oxidative agents sodium hypochlorite and hydrogen peroxide was proposed. The presented synthetic method has been developed at laboratory and applied at semi-industrial level. The developed optimal method provides a powerful and versatile means for the preparation of N-alkyl and N,N-dialkyl- O-ethyl and O-isopropyl thiocarbamates, offering several benefits, namely, simple operation, mild reaction conditions, bypass of hazardous organic solvents, moderately toxic and inexpensive reagents, and also short reaction times and high product yields.en
dc.description.abstractU ovom radu prikazana je sinteza, novim optimizovanim postupkom, N-alkil - i N,N-dialkil- O-etil- i O-izopropiltiokarbamata oksidacijom aminskih soli etil- i izopropilksantogene kiseline pomoću natrijum-hipohlorita i vodonik-peroksida. Alkilaminske soli etil- i izopropilksantogene kiseline dobijene su reakcijom između alkilamonijumsulfata i natrijum-etilksantata ili natrijum-izopropilksantata. Struktura sintetisanih jedinjenja potvrđena je IR, 1H-NMR i MS instrumentalnim metodama, a čistoća je određena gasnom hromatografskom metodom. Postupak sinteze opisan u ovom radu daje velike prednosti u odnosu na poznate postupke sinteze koji se primenjuju u laboratoriji i u industrijskim uslovima. Postupak karakteriše visok stepen konverzije reaktanata u proizvod, visok stepen čistoće, bez sporednih proizvoda, a tehnološki je primenljiv na industrijskom nivou proizvodnje. Sintetisana jedinjenja se primenjuju kao selektivni reagensi za flotaciju ruda bakra i cinka.sr
dc.publisherAssociation of Chemical Engineers of Serbia
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceHemijska industrija
dc.subjectN-Alkyl-O-isopropylthiocarbamateen
dc.subjectN-Alkyl-O-ethyl thiocarbamateen
dc.subjecthydrogen peroxideen
dc.subjectsodium hypochloriteen
dc.subjectsynthesisen
dc.subjectN-Alkil-O-izopropiltiokarbamatsr
dc.subjectN-Alkil-O-etiltiokarbamatsr
dc.subjectvodonik-peroksidsr
dc.subjectnatrijum-hipohloritsr
dc.subjectsintezasr
dc.titleNew method for synthesis of N-alkyl and N,N-dialkyl-O-ethyl and O-isopropylthiocarbamates by oxidation of ammonium salt of xhantogenic aciden
dc.titleNovi postupak sinteze N-alkil- i N,N-dialkil-O-etil- i O-izopropiltiokarbamata oksidacijom aminskih soli ksantogene kiselinesr
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage409
dc.citation.issue5
dc.citation.other64(5): 401-409
dc.citation.rankM23
dc.citation.spage401
dc.citation.volume64
dc.identifier.doi10.2298/HEMIND100527049M
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/8639/0367-598X1000049M.pdf
dc.identifier.scopus2-s2.0-78449275775
dc.identifier.wos000285175800005
dc.type.versionpublishedVersion


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