A microwave assisted synthesis of benzoxazoles from carboxylic acids

A series of various poly-substituted benzoxazoles were synthesized starting from readily available carboxylic acids. The method is based on TCT (cyanuric chloride)/microwave acid activation and it is characterized by mild conditions, allowing for a wide range of starting materials and functionalization of final products. (c) 2012 Elsevier Ltd. All rights reserved.