title: Dual visible light photoredox and gold-catalyzed arylative ring expansion.
abstract: 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.
authors.affiliation: Department of Chemistry, University of California , Berkeley, California 94720, United States.
authors.forename: Xing-zhong
authors.initials: XZ
authors.lastname: Shu
authors.forename: Miao
authors.initials: M
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: He
authors.forename: Heinz
authors.initials: H
authors.lastname: Frei
authors.forename: F Dean
authors.initials: FD
authors.lastname: Toste
mesh_terms: D000475:Alkenes / Q000737:chemistry; D001554:Benzene / Q000737:chemistry*; D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D008027:Light; D010084:Oxidation-Reduction; D055668:Photochemical Processes
chemical_list: D000475:Alkenes; D006046:Gold; D001554:Benzene
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