Photo-induced carboxylation of C(sp²)-S bonds in aryl thiols and derivatives with CO₂.

ABSTRACT: Aryl thiols have proven to be a useful class of electron donors and hydrogen atom sources in photochemical processes. However, the direct activation and functionalization of C(sp²)-S bonds in aryl thiols remains elusive in the field of photochemistry. Herein, a photochemical carboxylation of C(sp²)-S bonds in aryl thiols with CO₂ is reported, providing a synthetic route to important aryl carboxylic acids. Moreover, different kinds of aryl thiol derivatives, benzeneselenol and diphenyl diselenide also show moderate-to-high reactivity in this transformation. Mechanistic studies, including DFT calculations, suggest that the in situ generated carbon dioxide radical anion (CO₂^•-) and disulfide might be the key intermediates, which undergo r

SUBMITTER: Liu J 

PROVIDER: S-EPMC11584649 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature