Addition of trimethylsilyl cyanide to N-alkyl-C-phenylnitrones affords cyano-O-silylhydroxylamines; reaction of these species with silver fluoride regenerates the nitrone in quantitative yield thereby providing a useful nitrone blocking group.
A. Padwa and K. F. Koehler, J. Chem. Soc., Chem. Commun., 1986, 789 DOI: 10.1039/C39860000789
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