Catalyst-Free “On-Water” Regio- and Stereospecific Ring-Opening of Spiroaziridine Oxindole: Enantiopure Synthesis of Unsymmetrical 3,3′-Bisindoles
作者:Saumen Hajra、Somnath Singha Roy、Sk Mohammad Aziz、Dhiraj Das
DOI:10.1021/acs.orglett.7b01833
日期:2017.8.4
A catalyst-free water-mediated regio- and stereospecific ring-opening reaction of nonracemic spiroaziridine oxindoles and indoles has been developed with retention of configuration. This method provides direct access to enantiopure 3,3′-mixed bisindoles with excellent yield and enantioselectivity (up to 98% ee).