A Convenient Method for the Conversion of N-Acyloxazolidinones to Hydroxamic Acids

Abstract
Treatment of N-acyloxazolidinones with hydroxylamines using samarium triflate as a Lewis acid provides the corresponding hydroxamic acids in 50−98% yields at room temperature. The conversion proceeds with high degree of chemoselectivity and without racemization of chiral centers α- to the acyl group.