Rh(III)-Catalyzed Directed C−H Olefination Using an Oxidizing Directing Group: Mild, Efficient, and Versatile

An efficient Rh(III)-catalyzed oxidative olefination by directed C−H bond activation of N-methoxybenzamides is reported. In this mild, practical, selective, and high-yielding process, the N−O bond acts as an internal oxidant. In addition, simply changing the substituent of the directing/oxidizing group results in the selective formation of valuable tetrahydroisoquinolinone products.