Copper‐Catalyzed Direct Oxyphosphorylation of Enamides with P(O)‐H Compounds and Dioxygen

A simple and convenient copper‐catalyzed direct oxyphosphorylation of enamides with P(O)‐H compounds and dioxygen has been developed under mild conditions. This methodology can allow the synthesis of a series of valuable β ‐ketophosphine oxides/ β ‐ketophosphonates in moderate to good yields with a broad substrate scope simply by using readily‐available starting materials.