A novel photoredox-active group for the generation of fluorinated radicals from difluorostyrenes?
Chemical Science Pub Date: 2019-11-26 DOI: 10.1039/C9SC04643G
Abstract
A 4-tetrafluoropyridinylthio group was suggested as a new photoredox-active moiety. The group can be directly installed on difluorostyrenes in a single step by the thiolene click reaction. It proceeds upon visible light catalysis with 9-phenylacridine providing various difluorinated sulfides as radical precursors. Single electron reduction of the C–S bond with the formation of fluoroalkyl radicals is enabled by the electron-poor azine ring. The intermediate difluorinated sulfides were involved in a series of photoredox reactions with silyl enol ethers, alkenes, nitrones and an alkenyl trifluoroborate.
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Journal Name：Chemical Science
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CAS no.: 89640-58-4
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