ChemInform Abstract: Silica Supported Fluoroboric Acid: An Efficient and Reusable Heterogeneous Catalyst for Facile Synthesis of 2‐Aliphatic Benzothiazoles, Benzoxazoles, Benzimidazoles and Imidazo[4,5‐b]pyridines.

Abstract

However all of these procedures suffer from one or more of the following drawbacks such as long reaction time, low yield of the products, harsh reaction conditions, use of excess amount of reagents, tedious work up procedures and co-occurrence of several side reactions. In addition, most of the catalysts and reagents are expensive,