Copper(II)-Promoted C-C Bond Formation by Oxidative Coupling of Two C(sp3)-H Bonds Adjacent to Carbonyl Group to Construct 1,4-Diketones and Tetrasubstituted Furans

The copper(II)‐promoted C–C bond formation from the coupling of two C(sp3)–H bonds that are adjacent to a carbonyl group was achieved. This protocol offers a simple and efficient approach to 2,3‐disubstituted 1,4‐diketones and tetrasubstituted furans. This method features a wide substrate scope and high functional group tolerance. Coupling of two C–H bonds adjacent to a carbonyl group: The copper(II)‐promoted coupling of two C(sp3)–H bonds that are adjacent to a carbonyl group was carried out for the preparation of 2,3‐disubstituted 1,4‐diketones and tetrasubstituted furans. This economic approach features a wide substrate scope and a high functional group tolerance.