2-Acetamidoethenylthioesters have been prepared from 4-carboxymethylazetidin-2-one and cyclised via an intramolecular Wittig reaction to provide 3-(2-acetamidoethenylthio)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylates, closely related analogues of the naturally occurring antibiotic MM 13902 (1).
A. J. G. Baxter, R. J. Ponsford and R. Southgate, J. Chem. Soc., Chem. Commun., 1980, 429 DOI: 10.1039/C39800000429
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