How is 1-ethylcyclopentyl ester synthesized?

The synthesis process of 1-ethylcyclopentyl methacrylate is as follows: first, dichloromethane, 1-ethylcyclopentanol, triethylamine, 4-dimethylaminopyridine, and benzothiazine are added to a reactor, and then methacryloyl chloride is added dropwise to the reactor at low temperature to carry out an esterification reaction. After the reaction is completed, the crude product is washed with water, washed with alkali, dried, and concentrated under reduced pressure to obtain a crude product, and finally purified by vacuum distillation to obtain a high-purity product.

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