Communication
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4-chlorobenzoate (5.0 ꢁ 10ꢂ2 mol Lꢂ1), diphenylphosphine oxide (0.2
mol Lꢂ1), AgF (1.0 ꢁ 10ꢂ2 mol Lꢂ1), and DMPO (6.0 ꢁ 10ꢂ2 mol Lꢂ1) in
DMF (2 mL), 110 ꢀC for 2.5 h.
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Markovnikov addition and scalability make this methodology
attractive to organophosphorus synthetic chemistry. Radical
clock and ESR studies support the free-radical addition
pathway.
Acknowledgements
This project is supported by the National Science Foundation of
China (nos 21272096, 21472080).
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