Extending Pummerer reaction chemistry. Examination of the prospects for forming vicinal quaternary carbon centers
作者:Ken S. Feldman、Ahmed Yimam Nuriye
DOI:10.1016/j.tetlet.2009.02.024
日期:2009.4
Pummerer chemistry applied to 2-sulfinyl indoles promotes oxidativecyclization of pendant nucleophiles to furnish C(3) spirocyclic indolenine products. Use of tetrasubstituted silylenolether nucleophiles in this transform yields spirocycles featuring vicinal all-carbon quaternary centers in two cases, but fails when a nearby amine can intervene.