Formation of β -Lactones by [2+2] Cycloaddition of Dichloroketene with Unreactive Carbonyl Compounds

Xu Dong,Chunxia Zhang,Jian Xu, Yue Zhang,Ying Zhao,Li Chen

Chemical Research in Chinese Universities（2018）

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摘要

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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关键词

Dichloroketene, Unreactive carbonyl group, β-Lactone, [2+2] Cycloaddition

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