Simple and Efficient Method for the Synthesis of Highly Substituted Imidazoles Catalyzed by Benzotriazole
作者:Feng Xu、Nige Wang、Youping Tian、Gaoqiang Li
DOI:10.1002/jhet.1818
日期:2013.5
Benzotriazole is an efficient, readily available, and simple catalyst for the synthesis of 2,4,5‐trisubstituted imidazoles in high yields from 1,2‐diketones and aldehydes in the presence of NH4OAc via multi‐components reaction. The significant features of this one‐pot procedure are very simple operation, easy work‐up and purification of products.
A Rapid and Convenient Synthesis of Derivatives of Imidazoles under Microwave Irradiation
作者:Na Zhao、Yu-Lu Wang、Jin-Ye Wang
DOI:10.1002/jccs.200500078
日期:2005.6
of benzimidazoles and trisubstituted imidazoles was developed. Three benzimidazoles were obtained as a result of the condensation of 1,2-phenylenediamine with carboxylic acids and acetoaceticester without catalyst. A series of trisubstituted imidazoles were synthesized by condensation of benzil, aromatic aldehyde and ammonium acetate in the presence of glacial acetic acid.