Energy-transfer-enabled photocatalytic transformations of aryl thianthrenium salts

Kai Sun, Chang Ge, Xiaolan Chen (), Bin Yu (), Lingbo Qu and Bing Yu ()
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Kai Sun: Zhengzhou University
Chang Ge: Zhengzhou University
Xiaolan Chen: Zhengzhou University
Bin Yu: Zhengzhou University
Lingbo Qu: Zhengzhou University
Bing Yu: Zhengzhou University

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Aryl thianthrenium salts are valuable in photocatalysis but traditionally require external electron donors for activation. This study introduces an energy transfer (EnT) strategy for the activation of aryl thianthrenium salts using 2,3,4,5,6-penta(carbazol-9-yl)benzonitrile (5CzBN) as a metal-free photocatalyst, eliminating the need for external donors. Utilizing this EnT approach, we achieve C–H deuteration of arenes under visible light with CDCl3 as a deuterium source to synthesize various deuterated aromatic compounds, including important natural products and pharmaceuticals. Additionally, this strategy enables diverse functionalizations including borylation, arylation, cyanation, and selenylation, enhancing the applicability of aryl sulfonium salts in environmentally friendly photocatalysis.

Date: 2024
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DOI: 10.1038/s41467-024-54079-3

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