摘要/Abstract

报道了在水相中可见光下1，2-苯二胺与苯腈的环化反应，合成了一系列苯并咪唑类化合物.反应用便宜、易处理、对环境无污染的曙红Y作为光催化剂.室温下在水相中反应，获得的产物有较好收率，最高产率可达到91%.提供了一种合成苯并咪唑类化合物的简便经济的方法.
关键词: 可见光, 曙红Y, 苯并咪唑, 催化剂
A novel visible-light-introduced reaction for the construction of benzimidazole derivatives via radical cyclization of o-phenylenediamines with benzonitrile derivatives in water has been developed. The reaction has been achieved in high yield under mild conditions by using Eosin Y as photocatalyst, which is cheap, easy to handle and environmentally friendly. A variety of benzimidazoles were obtained in up to 91% yields. It might provide a promising protocol for the synthesis of benzimidazole derivatives.
Key words: visible-light photoredox catalysis, eosin Y, benzimidazole, catalyst


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