Chin. J. Org. Chem. ›› 2017, Vol. 37 ›› Issue (5): 1252-1257.DOI: 10.6023/cjoc201701024 Previous Articles     Next Articles



张钊瑞, 徐良, 唐汉秦, 吴伯鑫, 冯迪, 郭长彬   

  1. 首都师范大学化学系 北京 100048
  • 收稿日期:2017-01-10 修回日期:2017-02-12 发布日期:2017-02-20
  • 通讯作者: 郭长彬
  • 基金资助:


Convenient Synthesis of Imidazo-Fused Heterocycles via CeCl3·7H2O Catalyzed Groebke-Blackburn-Bienayme Reaction

Zhang Zhaorui, Xu Liang, Tang Hanqin, Wu Boxin, Feng Di, Guo Changbin   

  1. Department of Chemistry, Capital Normal University, Beijing 100048
  • Received:2017-01-10 Revised:2017-02-12 Published:2017-02-20
  • Contact: 10.6023/cjoc201701024
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 30873140), the Program for Excellent Talents of Beijing City (No. 20071D0501600227) and the Beijing Municipal Commission of Education (No. KM201010028011).

A simple, efficient and eco-friendly “one-pot” method for the convenient synthesis of imidazo-fused heterocycles has been developed. The reaction was catalyzed by CeCl3·7H2O in ethanol under 60 ℃ via Groebke-Blackburn-Bienayme (GBB) reaction of aldehydes, aminoazines and isocyanides. This method has many advantages of a wide range of substrates, short reaction time and easy purification. In addition, we conducted a comparative study of LaCl3·7H2O with CeCl3·7H2O on their catalytic effect under the same reaction conditions, and found that CeCl3·7H2O was comparable to LaCl3·7H2O as catalyst in GBB reaction.

Key words: Groebke-Blackburn-Bienayme reaction, imidazo-fused heterocycles, CeCl3·H2O, LaCl3·H2O