18th Iranian Seminar of Organic Chemistry , 2012-03-07

Title : ( Synthesis of Novel Heterocyclic System of [1,2,4] triazolo [3ʹ,4ʹ:2,3]pyrimido[4,5-c]isothiazole )

Authors: Mehdi Bakavoli , Hossein Eshghi , hamideh khoshniazi , Ali Shiri ,

Citation: BibTeX | EndNote

Starting from 4,5-dihydro-4-imino-6-(methylthio)-N,5-diphenylisothiazolo[3,4-d] pyrimidin-3-amin (1), synthetic pathway to 6-Hydrazinyl-4, 5-dihydro-4-imino-N,5-diphenylisothiazolo[3,4-d]pyrimidin-3-amine (2) is described. The reaction of 4 ,5-dihydro-4-imino-6-(methylthio)-N,5-diphenylisothiazolo[3,4-d]pyrimidin-3-amin (1) with hydrazine hydrate afforded the corresponding hydrazino derivatives (2). Further treatment of these compounds with different orthoesters in acetic acid gave the corresponding N-(4-imino-8-alkyl-5-phenyl-4,5-dihydro[1,2,4]triazolo[3',4':2,3] pyrimido[4,5-c]isothiazolo-3-yl) N-phenylamine (3a-c). Reaction of 6-Hydrazinyl-4, 5-dihydro-4-imino-N,5-diphenylisothiazolo[3,4-d]pyrimidin-3-amine (2) with carbon disulphide afforded the Anilino-4-imino-5-phenyl-4,5,7,8-tetrahydro[1,2,4] triazolo [3',4':2,3]pyrimido[4,5-c] isothiazolo -8-thione (4).

Keywords

, [1, 2, 4] triazolo
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@inproceedings{paperid:1026867,
author = {Bakavoli, Mehdi and Eshghi, Hossein and Khoshniazi, Hamideh and Shiri, Ali},
title = {Synthesis of Novel Heterocyclic System of [1,2,4] triazolo [3ʹ,4ʹ:2,3]pyrimido[4,5-c]isothiazole},
booktitle = {18th Iranian Seminar of Organic Chemistry},
year = {2012},
location = {زاهدان, IRAN},
keywords = {[1;2;4] triazolo [3ʹ;4ʹ:2;3]pyrimido[4;5-c]isothiazole},
}

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%0 Conference Proceedings
%T Synthesis of Novel Heterocyclic System of [1,2,4] triazolo [3ʹ,4ʹ:2,3]pyrimido[4,5-c]isothiazole
%A Bakavoli, Mehdi
%A Eshghi, Hossein
%A Khoshniazi, Hamideh
%A Shiri, Ali
%J 18th Iranian Seminar of Organic Chemistry
%D 2012

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