Scalable, One-Pot, Microwave-Accelerated Tandem Synthesis of Unsymmetrical Urea Derivatives
作者:Abhijit R. Kulkarni、Sumanta Garai、Ganesh A. Thakur
DOI:10.1021/acs.joc.6b02521
日期:2017.1.20
We report a facile, microwave-accelerated, one-pottandemsynthesis of unsymmetrical ureas via a Curtius rearrangement. In this method, one-pot microwave irradiation of commercially available (hetero)aromatic acids and amines in the presence of diphenylphosphoryl azide enabled extremely rapid (1–5 min) construction of an array of unsymmetrical ureas in good to excellent yields. We demonstrate the utility