Rhodium‐Catalyzed Decarbonylative Coupling Reactions of Diphenylketene with Alkenes

Abstract

The decarbonylative coupling reaction of diphenylketene with 2-norbornene, catalyzed by [{RhCl(CO)2}2], proceeds smoothly in toluene to give the corresponding substituted cyclopropane, 3,3-diphenyltricyclo[3.2.1.02, 4]octane, in good yield. The corresponding reaction of diphenylketene with electron-deficient terminal alkenes leads to the linear coupling products.