有机化学 ›› 2020, Vol. 40 ›› Issue (8): 2563-2569.DOI: 10.6023/cjoc202004016 上一篇    下一篇

所属专题: 有机光催化虚拟合辑

研究简报

水相中可见光催化腈合成苯并咪唑衍生物

林媚a, 吴凡a, 刘天惠a, 陈志涛a, 许秀枝a, 柯方a,b   

  1. a 福建医科大学药学院 福州 350004;
    b 福建省天然药物药理学重点实验室 福州 350004
  • 收稿日期:2020-04-11 修回日期:2020-05-09 发布日期:2020-05-28
  • 通讯作者: 林媚, 柯方 E-mail:linmei@fjmu.edu.cn;kefang@163.com
  • 基金资助:
    福建省自然科学基金(Nos.2016Y9052,2016Y9053,2017J01820)资助项目.

Visible-Light Promoted Preparation of Benzimidazoles by Eosin Y Catalyzed Reaction of Benzonitrile Derivatives in Water

Lin Meia, Wu Fana, Liu Tianhuia, Chen Zhitaoa, Xu Xiuzhia, Ke Fanga,b   

  1. a Department of Pharmacy, Fujian Medical University, Fuzhou 350004;
    b Fujian Provincial Key Laboratory of Natural Medicine Pharmacolog, Fuzhou 350004
  • Received:2020-04-11 Revised:2020-05-09 Published:2020-05-28
  • Supported by:
    Project supported by the Natural Science Foundation of Fujian Province (Nos. 2016Y9052, 2016Y9053, 2017J01820).

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