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Alkyne Difunctionalization by Dual Gold/Photoredox Catalysis.

著者 Glorius F , Tlahuext-Aca A , Hopkinson M , Garza-Sanchez A
Chemistry.2016 Feb 17 ; ():.
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Highly selective tandem nucleophilic addition-cross-coupling reactions of alkynes have been developed using visible light-promoted dual gold/photoredox catalysis. The simultaneous oxidation of AuI and coordination of the coupling partner by photo-generated aryl radicals, and the use of catalytically-inactive gold precatalysts allows for high levels of selectivity for the cross-coupled products without competing hydrofunctionalization or homocoupling. As demonstrated in representative arylative Meyer-Schuster and hydration reactions, this work expands the scope of dual gold/photoredox catalysis to the largest class of substrates for gold catalysts and benefits from the mild and environmentally-attractive nature of visible light activation.
PMID: 26888456 [PubMed - as supplied by publisher]
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