First Kumada reaction of alkyl chlorides using N-heterocyclic carbene/palladium catalyst systems
作者:Anja C Frisch、Franck Rataboul、Alexander Zapf、Matthias Beller
DOI:10.1016/s0022-328x(03)00723-x
日期:2003.12
For the first time it is shown that N-heterocyclic carbenes are suitable ligands for the palladium-catalyzed coupling of alkyl chlorides with aryl Grignard reagents. A variety of simple as well as functionalized primary alkyl chlorides provide the corresponding alkyl benzenes in general in good to very good yield. By comparing the 1,3-dimesitylimidazol-2-ylidene (IMes) palladium(0) naphthoquinone complex
The control of selectivity in the reactions of the highly reactive open‐shell carbon radicals is an attractive but often challenging task. Building on the strategy of photoinduced iminyl radical‐mediated C−Cbondcleavage, we have developed photocatalytic neophyl rearrangement and reduction of distal carbon radicals under visible light irradiation of O‐acyl oximes. This mild protocol tolerates a wide