Rhodium(III)-Catalyzed Selective ortho-Olefinations of N-Acyl and N-Aroyl Sulfoximines by CH Bond Activation

Two new rhodium‐catalyzed oxidative couplings between sulfoximine derivatives and alkenes by regioselective CH activation, affording ortho‐olefinated (Heck‐type) products, are reported. A synthetic application of the ortho‐alkenylated products into the corresponding cyclic derivatives has been demonstrated, and a mechanistic rational for the rhodium catalysis is presented. Directed arene alkenylations: Two new rhodium‐catalyzed oxidative couplings between sulfoximine derivatives and alkenes by regioselective CH activation, affording ortho‐olefinated (Heck‐type) products, are reported (see scheme; Cp*=pentamethylcyclopentadiene, Ac=acetyl).