N-Substituted Formamides as C1-Sources for the Synthesis of Benzimidazole and Benzothiazole Derivatives by Using Zinc Catalysts
作者:Bhalchandra Bhanage、Deepak Nale
DOI:10.1055/s-0035-1560319
日期:——
An efficient and convenient one-pot protocol has been developed for the synthesis of a variety of benzimidazole, benzoxazole, and benzothiazole derivatives. This novel approach uses various o-phenylenediamines and N-substituted formamides (C1 sources) in a zinc-catalyzed cyclization in the presence of poly(methylhydrosiloxane) to afford the corresponding derivatives as sole products in moderate to
已开发出一种高效、方便的一锅法,用于合成各种苯并咪唑、苯并恶唑和苯并噻唑衍生物。这种新方法在聚(甲基氢硅氧烷)存在下在锌催化环化中使用各种邻苯二胺和 N-取代甲酰胺(C1 源),以中等至优异的产率提供相应的衍生物作为唯一产物。