Rh(III)-catalyzed C-H [4 + 2] annulation of oximes with (hetero)cyclic iodonium ylides to access pyrano[4,3-b]pyridin-5one derivatives

We herein report a Rh(III)-catalyzed C-H [4 + 2] annulation of oximes with iodonium ylides, enabling efficient access to medicinally valuable pyrano [4,3-b]pyridin-5-one derivatives. This external oxidant-free approach demonstrates broad...