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Photocatalyzed Transition-Metal-Free Oxidative Cross-Coupling Reactions of Tetraorganoborates
preprintsubmitted on 25.09.2020, 09:37 and posted on 25.09.2020, 13:22 by Arif Music, Andreas N. Baumann, Florian Boser, Nicolas Müller, Florian Matz, Thomas C. Jagau, Dorian Didier
Readily accessible tetraorganoborate salts undergo selective coupling reactions under blue light irradiation in the presence of catalytic amounts of transition-metal-free acridinium and rhodamine photocatalysts to furnish unsymmetrical biaryls, heterobiaryls and arylated olefins. This represents an interesting conceptual approach to forge C-C bonds between aryl, heteroaryl and alkenyl groups under smooth photochemical conditions. Computational studies were conducted to investigate the mechanism of the transformation.
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in Chemistry – A European Journal