Copper-catalyzed olefinic C-H difluoroacetylation of enamides

Chem Commun (Camb). 2014 Jun 4;50(44):5887-90. doi: 10.1039/c4cc01994f.

Abstract

Copper-catalyzed olefinic difluoroacetylation of enamides via direct C-H bond functionalization using BrCF2CO2Et is reported for the first time. It constitutes an efficient radical-free method for the regioselective synthesis of β-difluoroester substituted enamides which exhibits broad substrate scope, and thus demonstrates its potent application in a late stage fluorination strategy.