Selective Synthesis of 2-Aryl-1-benzylated-1H-benzimidazoles
摘要:
AbstractAn efficient and simple procedure was developed for the green synthesis of various 2‐aryl‐1‐ben‐zylated‐1H‐benzimidazoles in high yields by condensation of o‐phenylenediamine with aldehydes with P2O5/SiO2 as catalyst under solvent‐free and ambient conditions.
Highly selective synthesis of libraries of 1,2-disubstituted benzimidazoles using silica gel soaked with ferric sulfate
作者:Susmita Paul、Basudeb Basu
DOI:10.1016/j.tetlet.2012.05.129
日期:2012.8
An efficient and highly selective synthesis of functionalized 1,2-benzimidazoles has been developed under solvent-free conditions at ambient temperature using eco-friendly ferric sulfate soaked with silica [iron(III)sulfate–silica]. Recycling of the solid support up to six runs was investigated with appreciable yield and selectivity of the product.