作者:Chun Lin Zhang、Dong Feng Zhang、Hong Yi Zhao、Zi Yun Lin、Hai Hong Huang
DOI:10.1016/j.cclet.2012.05.012
日期:2012.7
An efficient and eco-friendly protocol for the chemoselective N-benzyloxycarbonylation of amines was described. The reaction of amines with benzyl chloroformate (Cbz-Cl) in the presence of PEG-600 at room temperature afforded the corresponding N-Cbz derivatives in excellent yields. The method is applicable to the N-Cbz protection of aliphatic (acyclic and cyclic) and aromatic amines. (C) 2012 Hai Hong Huang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.