Copper-Catalyzed Oxidative sp³-Carbon Radical Cross-Coupling with Trialkylphosphites Leading to α-Phosphonyl 1,3-Dicarbonyl Compounds

Abstract

A copper-catalyzed radical C_sp³-H/P(OR)₃ cross-coupling reaction for the formation of C_sp³-P bonds is described. A range of 1,3-dicarbonyl compounds and trialkylphosphites were coupled in this fashion to give the corresponding products in moderate to good yields. This protocol provides direct access to α-phosphonyl 1,3-dicarbonyl compounds.