The N-chlorosulphonyl β-lactams formed as intermediates in the reaction between chlorosulphonyl isocyanate and allyl- and (allenylmethyl)-silanes can be intercepted by aqueous sodium sulphite; this has allowed the preparation of a range of usefully functionalised monocyclic N-protio β-lactams.
E. W. Colvin and M. Monteith, J. Chem. Soc., Chem. Commun., 1990, 1230 DOI: 10.1039/C39900001230
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