Rhodanine in Fused-Heterocycles Syntheses

Abstract

The reaction of 3-aminothiazolidine-2-thione-4-one (3-aminorhodanine, 1) with some π-deficient compounds afforded three types of products: bicyclic noncondensed derivatives such as bis(3-aminothiazole-2-thione-4-one), the condensation product 2-(3-amino-2-thioxothiazolo)-1,3-indanedione, as well as the fused heterocyclic compounds thioxothiazolo[3,4-c]oxadiazine, furo[2,3-b]thiazole, thiazolo[3,4-c]benzoxadiazine, and naphthoquinothiazolo[3,4-c]oxadiazine.

Keywords:

• 3-Aminorhodanine
• π-deficients
• oxadiazine and thiazole derivatives

Acknowledgments

Dedicated to Professor Henning Hopf on occasion of his 65th birthday.