The Reactivity of Dimethyl Acetylenedicarboxylate and Heterocyclization of Hydrazinecarbothioamides to 1,3-Thiazolidin-4-ones
作者:Alaa A. Hassan、Nasr K. Mohamed、Kamal M. A. El-Shaieb、Hendawy N. Tawfeek、Stefan Bräse、Martin Nieger
DOI:10.1002/jhet.2392
日期:2016.1
2‐Substituted hydrazinecarbothioamides and N,2‐disubstituted hydrazinecarbothioamides react, in high yields with dimethylacetylenedicarboxylate to give 4‐oxo‐Z‐(thiazolidin‐5‐ylidene)acetate derivatives. Several mechanistic options involving interaction are presented. The structures of thiazolidin‐4‐ones have been unambiguously confirmed by single crystal X‐ray crystallography.