Water-Mediated Synthesis of 2-Substituted Benzimidazoles by Boric Acid and Glycerol
作者:Chhanda Mukhopadhyay、Pradip Kumar Tapaswi、Ray J. Butcher
DOI:10.1071/ch08309
日期:——
A very simple, mild, and highly efficient green catalyst has been developed for the synthesis of 2-substituted benzimidazoles by treatment of substituted ortho-phenylenediamines and aldehydes in water at 80°C in the presence of boric acid (5 mol-%) and glycerol (0.05 mL). This methodology has been standardized on 55 substrates, and nine new compounds have been synthesized.
已开发出一种非常简单,温和且高效的绿色催化剂,用于在硼酸(5摩尔%)和80℃的存在下于80°C的水中处理取代的邻苯二胺和醛来合成2-取代的苯并咪唑。甘油(0.05 mL)。该方法已在55种底物上标准化,并合成了9种新化合物。