Visible Light Photoredox-Catalyzed Arylative Ring Expansion of 1-(1-Arylvinyl)cyclobutanol Derivatives
作者:Su Jin Kwon、Dae Young Kim
DOI:10.1021/acs.orglett.6b02201
日期:2016.9.16
A visiblelightmediatedphotocatalytic arylation/ring expansion of alkenylcyclobutanols has been developed. This approach provides a mild and operationally simple access to the synthesis of functionalized cyclic ketones from the coupling reaction of alkenylcyclobutanols with aryldiazonium salts.
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.