Rh(iii)-catalyzed C–H activation/cyclization of benzamides and diazo compounds to form isocoumarins and α-pyrones†
Abstract
Rhodium-catalyzed intermolecular cyclization of benzamides and diazo compounds via C–H activation has been achieved to construct C–C/C–O bonds for the first time. The process provides a facile approach for the construction of isocoumarins and α-pyrones without the need for high temperature or adding oxidants.