The present invention discloses a process for the preparation of dibenzothiazepinone compounds of Formula I. The process for preparation of a dibenzothiazepinone compound of Formula I comprises reaction of compound of formula II in the presence of an acid catalyst comprising phosphorus pentoxide and methanesulfonic acid. The dibenzothiazepinone compounds of Formula I are key intermediate for the preparation of 2-(2-(4-dibenzo[b,f][1,4]thiazepine-11-yl-1-piperazinyl)ethoxy)ethanol known as quetiapine and its derivatives, which are effective antipsychotic substances.
本发明揭示了一种制备式I的
二苯并噻吩酮化合物的过程。制备式I的
二苯并噻吩酮化合物的过程包括在
磷酸五氧化物和
甲磺酸组成的酸催化剂存在下,使式II的化合物发生反应。式I的
二苯并噻吩酮化合物是制备2-(2-(4-二苯并[b,f][1,4]
噻吩-11-基-1-
哌嗪基)乙氧基)
乙醇,即奎哌齐平及其衍
生物的关键中间体,这些物质是有效的
抗精神病药物。