Rare-Earth Metal Chlorides as Efficient Catalysts for the Simple and Green Synthesis of 1,2-Disubstituted Benzimidazoles and 2-Substituted Benzothiazoles Under Ultrasound Irradiation
作者:Li-Jun Zhang、Jing Xia、Yong-Qing Zhou、Hua Wang、Shao-Wu Wang
DOI:10.1080/00397911.2010.524337
日期:2012.2.1
Abstract Under solvent-free and ultrasonic irradiation conditions, efficient methods for the synthesis of 1,2-disubstitued benzimidazoles and 2-substitued benzothiazoles by employing rare-earth metal chlorides as catalysts are described. The methods have the advantages of broad generality, economical catalysts, good yields, simple operation, solvent-free condition, and ambient temperature. GRAPHICAL
摘要 介绍了在无溶剂和超声辐照条件下,以稀土金属氯化物为催化剂合成1,2-二取代苯并咪唑和2-取代苯并噻唑的有效方法。该方法具有通用性广、催化剂经济、收率好、操作简单、无溶剂、常温等优点。图形概要