Shanghai Boc Chemical Co., Ltd.

Hailin Jing

Wei Guo

Shangli Li

The present disclosure provides intermediates used for preparing Brivaracetam, a preparation method and a use thereof, including an intermediate compound A and an intermediate compound B and a preparation method thereof, as well as a synthetic route for using the intermediate compound B to prepare Brivaracetam. The present technical solution can obtain high-quality and high-optical purity Brivaracetam and intermediates thereof, the proportion of Brivaracetam among the four optical isomers being greater than 99.5%. In addition, neither silica gel column for separation and purification nor expensive chiral high performance liquid chromatography for resolution is required, thereby avoiding cumbersome separation and purification steps, also avoiding waste of raw materials, reducing the production cost and making it more suitable for industrial production.

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SHANGHAI, China

Hailin Jing