作者:Gary T. Wang、Yuanwei Chen、Sheldon Wang、Richard Sciotti、Thomas Sowin
DOI:10.1016/s0040-4039(97)00245-1
日期:1997.3
Secondary amines attached to a solid support such as the Wang resin can be converted to the corresponding carbamoyl chlorides by treatment with phosgene or triphosgene, Further reaction of the resulting carbamoyl chlorides with primary or secondary amines affords ureas in high yield and chemical purity. (C) 1997 Elsevier Science Ltd.