Dual gold photoredox C(sp2)–C(sp2) cross couplings – development and mechanistic studies

Vincent Gauchot, Ai-Lan Lee

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A dual visible light photoredox and gold-catalysed C(sp2)–C(sp2) cross coupling is described. The success of this mild, oxidant- and base-free cross coupling is highly dependent on the amount of water added. Mechanistic studies show two distinct pathways depending on the gold catalyst employed: transmetallation of the arylboronic acid with gold(I) occurs prior to oxidation of gold(I) to gold(III) using cationic gold(I) catalysts, whereas oxidation of gold(I) to gold(III) precedes transmetallation using neutral gold(I) catalysts.
Original languageEnglish
Pages (from-to)10163-10166
Number of pages4
JournalChemical Communications
Issue number66
Early online date19 Jul 2016
Publication statusPublished - 25 Aug 2016


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