U. Urleb
1995
Citations
0
Influential Citations
17
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Heterocyclic isothiocyanates bearing an o-ester group were converted into thiourea derivatives 2, 5, 6, 7, and 9 using sterically large primary amines or aminoacids, and to the fused ring systems, e.g. 12H-pyrido[3′,2′:4,5]pyrimido[2,1-b]benzothiazol-12-one (3), and 6,7-dihydro-9H-thiazolo[3,2-a]thieno[3,2-d]-pyrimidin-9-one (13), respectively, using bifunctional reagents such as 2-aminothiophenol or cysteamine.