Abstract

A visible-light-mediated fluorosulfonylation reaction of thianthrenium salts has been developed to prepare various sulfonyl fluorides with 1,4-diazabicyclo [2.2.2] octane bis (sulfur dioxide) (DABSO) as sulfonyl source and cheap KHF2 as fluorine source based on radical sulfur dioxide insertion and fluorination strategy. This operationally simple protocol proceeds with high functional-group tolerance under mild reaction conditions.

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