New route to 3-alkylthiazolo[3,2-a]benzimidazole derivatives

Abstract

3-Alkyl-thiazolo[3,2-a]benzimidazole derivatives are obtained in high yields via the corresponding 4-alkyl-N-3-(2-aminophenyl)-thiazoline-2-thiones which are easily prepared from 1,2-diaminobenzene, CS2 and halogenoketones. This new route compares advantageously with the classical mercaptobenzimidazole routes in term of simplicity, isolated yields and availability of the starting materials. © 2005 by MDPI.