Synthesis of 2,5-epoxy-1,4-benzoxazepines via rhodium(II)-catalyzed reaction of 1-tosyl-1,2,3-triazoles and salicylaldehydes
作者:Jiang Meng、Xiangfeng Ding、Xingxin Yu、Wei-Ping Deng
DOI:10.1016/j.tet.2015.11.021
日期:2016.1
The alpha-imino carbenes generating from 1-tosyl-1,2,3-triazoles have exhibited unique reactivities. A novel and efficient route for the construction of oxa-bridged 2,5-epoxy-1,4-benzoxazepines through a rhodium(II)-catalyzed tandem process of triazoles and salicylaldehydes has been developed. The oxazoles are obtained when 2-methanesulfonamidyl benzaldehyde is used instead of salicylaldehydes. (C) 2015 Elsevier Ltd. All rights reserved.