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发明公开
CN104591989A 5-[(4-氯苯基)甲基]-2,2-二甲基环戊酮的制备方法 有权

5-[(4-氯苯基)甲基]-2,2-二甲基环戊酮的制备方法
摘要：
本发明涉及一种5-[(4-氯苯基)甲基]-2,2-二甲基环戊酮的制备方法，主要解决现有技术中产品收率较低、操作复杂、环境污染较大的问题。本发明通过采用一种5-[(4-氯苯基)甲基]-2,2-二甲基环戊酮的制备方法，以1-[(4-氯苯基)甲基]-3,3-二甲基-2-氧代环戊烷甲酸甲酯或1-[(4-氯苯基)甲基]-3,3-二甲基-2-氧代环戊烷甲酸乙酯为原料，在离子液体中，在反应温度为100-180℃下进行脱羧反应，得到5-[(4-氯苯基)甲基]-2,2-二甲基环戊酮产品的技术方案较好地解决了上述问题，可用于5-[(4-氯苯基)甲基]-2,2-二甲基环戊酮的制备中。
摘要（英）：

The invention relates to a method for preparing 5-[(4-chlorophenyl)methyl]-2,2-dimethyl-cyclopentanone. The method is mainly used for solving the problems of lower product yield, complicated operation and larger environmental pollution in the prior art. The problems are well solved by adopting the following technical scheme that the method for preparing 5-[(4-chlorophenyl)methyl]-2,2-dimethyl-cyclopentanone comprises the following step of carrying out decarboxylation reaction on methyl 1-[(4-chlorophenyl)methyl]-3, 3-dimethyl-2-oxocyclopentanecarboxylate or ethyl 1-[(4-chlorophenyl)methyl]-3,3-dimethyl-2-oxo oxocyclopentanecarboxylate as a raw material in an ionic liquid at a reaction temperature of 100-180 DEG C to obtain 5-[(4-chlorophenyl)methyl]-2,2-dimethyl-cyclopentanone. The method can be used in preparation of 5-[(4-chlorophenyl)methyl]-2,2-dimethyl-cyclopentanone.

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