硫酸铜催化下的烯醇酯与酮的酯交换反应

Transesterification of Ketones with Enolacetate under the Catalysis of Cupric Sulphate

在硫酸铜存在下环酮(la～d)、乙酰丙酮(le)及乙酰乙酸乙酯(lf)同乙酸异丙烯酯、乙酸乙。烯酯反应得环烯醇酯(2a～d)、2-乙酰氧基-2-戊烯-4-酮(2e)及β-乙酰氧基丁烯酸酯(2f)。

The cyclopentenyl acetate (2a), cyclohexenyl acetate(2b), 2-metyl cyclohexenyl acetate(2c), cycloheptenyl acetate(2d), 2-acetoxy-2-pentenyl-4-one(2e) and β-acetoxybutenoic ester(2f) were obtained by the transesterification of cyclopentanone (la), cyclohexanone(1b), 2-methyl-cyclohexanone (1c), cycloheptanone (1d), acetylacetone (1e) and ethyl acetoacetate (1f) with isopropenyl acetate or vinyl acetate in the presence of cupric sulfate.