A simple and efficient one step synthesis of benzoxazoles and benzimidazoles from carboxylic acids
作者:Ying Wang、Kathy Sarris、Daryl R. Sauer、Stevan W. Djuric
DOI:10.1016/j.tetlet.2006.05.052
日期:2006.7
Benzoxazoles or benzimidazoles can be rapidly and efficiently synthesized from a variety of carboxylic acids with 2-aminophenols or 1,2-phenylenediamines in one simple step, respectively. The use of commercially available PS-PPh3 resin combined with microwave heating delivered a variety of benzoxazoles and benzimidazoles in high yields and purities.