期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 14, 页码 3997-4001出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201700290
关键词
EPR spectroscopy; fluoroalkylation; photochemistry; radicals; reaction mechanisms
资金
- Labex Charmmmat
Reported herein is the use of S-perfluoroalkyl sulfilimino iminiums as a new source of R-F radicals under visible-light photoredox catalysis (R-F=CF3, C4F9, CF2Br, CFCl2). These shelf-stable perfluoroalkyl reagents, readily prepared on gram scale from the corresponding sulfoxide using a one-pot procedure, allow the efficient photoredox-induced oxyperfluoroalkylation of various alkenes using fac-Ir(ppy)(3) as the photocatalyst. Importantly, spin-trapping/electron paramagnetic resonance experiments were carried out to characterize all the radical intermediates involved in this radical/cationic process.
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