Dual Visible Light Photoredox and Gold-Catalyzed Arylative Ring Expansion
作者:Xing-zhong Shu、Miao Zhang、Ying He、Heinz Frei、F. Dean Toste
DOI:10.1021/ja500716j
日期:2014.4.23
A combination of visible light photocatalysis and gold catalysis is applied to a ring expansion-oxidative arylation reaction. The reaction provides an entry into functionalized cyclic ketones from the coupling reaction of alkenyl and allenyl cycloalkanols with aryl diazonium salts. A mechanism involving generation of an electrophilic gold(III)-aryl intermediate is proposed on the basis of mechanistic studies, including time-resolved FT-IR spectroscopy.
US7166750B1
申请人:——
公开号:US7166750B1
公开(公告)日:2007-01-23
Intramolecular Palladium-Catalyzed Direct Arylation of Alkenyl Triflates
作者:Ana C. F. Cruz、Neil D. Miller、Michael C. Willis
DOI:10.1021/ol702044z
日期:2007.10.1
A catalyst generated from Pd(OAc)2 and dppp is effective for the direct intramolecular arylation of alkenyl triflates. Conjugated alkene-arene-containing carbocycles are produced in good yield. The process tolerates a variety of aryl substituents as well a simple heteroaryl groups. Electron-deficient aryl rings deliver faster reactions.