Rhodium-Catalyzed Arylative and Alkenylative Cyclization of 1,5-Enynes Induced by Geminal Carbometalation of Alkynes
作者:Yiyun Chen、Chulbom Lee
DOI:10.1021/ja067125+
日期:2006.12.1
formation of a rhodiumvinylidenecomplex with the terminal alkyne of the enyne substrate. The subsequent migration of the aryl or alkenyl group from the rhodium center to the alpha-carbon of the vinylideneligand gives a vinylrhodiumcomplex, a formal 1,1-carbometalation process of the alkyne. This vinylrhodium then adds to the pendent alkene, and the protodemetalation of the resulting rhodium enolate