Copper(I)-Promoted Dechlorinative Surzur-Tanner Rearrangement of 2,2,2-Trichloroethyl Carboyxlates

摘要

2,2,2-Tricholorethyl carboyxlates undergo highly efficient dechlorinative Surzur-Tanner rearrangement with 2 equiv of a 1:1 molar mixture of CuCl and bpy in boiling DCE to give 1-chloroethenyl carboxylates in which copper appears to play an important role, probably by coordinating the initial radical or as a Lewis acid catalyst.