Chiral crystals of the achiral oxo amide N,N-di-isopropylphenylglyoxylamide, prepared in large quantities, were irradiated in the solid state to give the optically active β-lactam 3-hydroxy-1-isopropyl-4,4-dimethyl-3-phenylazetidin-2-one in high optical and chemical yields.
F. Toda, M. Yagi and S. Sōda, J. Chem. Soc., Chem. Commun., 1987, 1413 DOI: 10.1039/C39870001413
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