A novel synthesis of 5‐acylaminooxazoles

Abstract 1,2‐Diacylamino‐1,2‐di(benzotriazol‐1‐yl)ethanes 2, easily prepared from the condensation of 1,2‐di(benzotriazol‐1‐yl)ethane‐1,2‐diol (1) and primary amides, were converted to 5‐acylaminooxazoles in good to moderate yields via intramolecular cyclization upon treatment with sodium hydride.