The object of the invention is a preparation method of Ceritinib of formula (I) and its salts wherein 2-isopropylthioaniline is used in the first step. Even under mild conditions, it provides an intermediate, which is further oxidized to a sulfone in a high yield. The sulfone is subsequently transferred by means of a one-step reaction to Ceritinib of formula I in the form of a salt either through a reaction with the intermediate of formula (V) catalyzed by an acid, or in neutral conditions with its unprotected analog of formula (IX), which is in the form of the in-situ generated monohydrochloride. The product is easily isolated from the reaction as crystalline Ceritinib of formula (I) in the form of the salt with hydrochloric acid.
该发明的目标是一种Ceritinib(
化学式(I))及其盐的制备方法,其中在第一步中使用2-异丙
硫氨基苯。即使在温和条件下,它也能够提供一种中间体,该中间体进一步氧化为磺酮,收率高。然后,通过一步反应将磺酮转移至Ceritinib(
化学式I)的盐形式,通过与公式(V)的中间体在酸催化下反应或在中性条件下与其未保护的公式(IX)的类似物反应,后者以原位生成的单氢
氯化物的形式存在。该产品易于从反应中分离出来,以
盐酸的结晶Ceritinib(
化学式I)的形式存在。