Abstract
We report a modified process that dichloroketene generated in situ from trichloroacetyl chloride and Zn powder reacts with unreactivate carbonyl groups to afford dichloro-β-lactones in moderate to good yields. Subse-quently, monochloro-β-lactones, β-lactones and β-hydroxy ester are obtained by dechlorination under different reac-tion conditions.
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