期刊
GREEN CHEMISTRY
卷 11, 期 2, 页码 275-278出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b815169e
关键词
-
资金
- Shanghai Foundation of Science and Technology [073919106]
New processes that can selectively prepare alpha-mono or alpha,alpha-dichloro ketones and beta-ketoesters using 1,3-dichloro-5,5-dimethylhydantoin (DCDMH) are reported. Using silica gel as the catalyst and methanol as the solvent and heating for 1 h under reflux, alpha-monochlorinated products were selectively obtained in 86-98% yield. However using a deep eutectic solvent (choline chloride: p-TsOH = 1:1) as the solvent and stirring for 45 min at room temperature, alpha,alpha-dichlorinated products were selectively obtained in 86-95% yield.
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