Novel synthesis of pyrazolyloxothiazolidine derivatives

AA Hassan, YR Ibrahim, EM El??Sheref…

Index: Hassan, Alaa A.; Ibrahim, Yusria R.; El-Sheref, Essmat M.; Aly, Ashraf A.; Braese, Stefan; Brown, Alan B. Journal of Heterocyclic Chemistry, 2012 , vol. 49, # 6 p. 1380 - 1385

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Citation Number: 8

Abstract

Abstract 1-Substituted 3-[3-(methyl/phenyl)-1H-pyrazol-5-yl] thioureas react with the triple bond of dimethyl acetylenedicarboxylate forming (Z)-methyl 2-[(Z)-3-substituted-2-(3- (methyl/phenyl-1H-pyrazol-5-ylimino)-4-oxothiazolidin-5-ylidene) acetates. Rational for these conversations are presented.