Preparation method of cyclopentadecanolide

The invention discloses a method for preparing cyclopentadecanolide, and belongs to the technical field of essence and perfume synthesis. Cyclododecanone addition ester is used as an initial raw material, a Baeyer-Villiger oxidation rearrangement reaction is performed to obtain an intermediate 1 (HSW-1), then a transesterification dehydration reaction is performed to obtain an intermediate 2 (HSW-2), and finally hydrogenation is performed to obtain the cyclopentadecanolide. According to the invention, the process is simplified to three-step reaction, so that ester exchange deacidification and dehydration of HSW-1 are completed in one pot, the productivity of the product is improved to a great extent, and the production cost of the product is reduced at the same time; the method does not need to use heavy metal salts such as copper acetate, so that the wastewater treatment difficulty is reduced, and the safety and environmental protection pressure of the process is relieved. 本发明公开了一种制备环十五内酯的方法，属于香精香料合成技术领域，本发明