Huang HL, Li S, Lv YZ, Shi YQ, Pang TT, Zhang RF, Huang W, Yin J, Gao F. Efficient Functionalization of Organosulfones via Photoredox Catalysis: Direct Incorporation of
α-Carbonyl Alkyl Side Chains into
α-Allyl-
β-Ketosulfones.
Molecules 2024;
29:1971. [PMID:
38731462 PMCID:
PMC11085174 DOI:
10.3390/molecules29091971]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/14/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
A novel and efficient method for functionalizing organosulfones has been established, utilizing a visible-light-driven intermolecular radical cascade cyclization of α-allyl-β-ketosulfones. This process employs fac-Ir(ppy)3 as the photoredox catalyst and α-carbonyl alkyl bromide as the oxidizing agent. Via this approach, the substrates experience intermolecular addition of α-carbonyl alkyl radicals to the alkene bonds, initiating a sequence of C-C bond formations that culminate in the production of organosulfone derivatives. Notably, this technique features gentle reaction conditions and an exceptional compatibility with a wide array of functional groups, making it a versatile and valuable addition to the field of organic synthesis.
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