C(sp3)–C(sp3) bond formation via copper/Brønsted acid co-catalyzed C(sp3)–H bond oxidative cross-dehydrogenative-coupling (CDC) of azaarenes†
Abstract
A copper/Brønsted acid dual-catalyst promoted oxidative cross-dehydrogenative-coupling of alkylazaarenes and tertiary amines for C(sp3)–C(sp3) bond formation was developed. This method uses dioxygen as the terminal oxidant under mild reaction conditions and would provide a convenient benzylic C–H transformation of alkylazaarenes to biologically active pharmaceutics.