[EN] PROCESS FOR THE PREPARATION OF 11-(4-[2-(2-HYDROXYETHOXY)ETHYL]-I-PIPERAZINYL)DIB ENZO[b,f][l,4]THIAZEPINE<br/>[FR] PROCEDE DE PREPARATION DE 11-(4-[2-(2-HYDROXYETHOXY)ETHYL]-I-PIPERAZINYL)DIB ENZO[B,F][L,4]THIAZEPINE
申请人:SK CORP
公开号:WO2006001619A1
公开(公告)日:2006-01-05
Disclosed is a process for the preparation of l l-(4-[2-(2-hydroxyethoxy)ethyl]-l- piperazinyl)-dibenzo[b,f][l,4]thiazepine. In the process, low-priced 2,2'-dithiosalicylic acid as starting material is subjected to bond formation reaction with l-chloro-2- 5 nitrobenzene in a basic aqueous solution, a nitro group reduction reaction is conducted, cyclization and chlorination reactions are simultaneously carried out in the presence of a equivalent amount of halogenating agent, a reaction with piperazine is continuously conducted without separation, and a reaction with 2-haloethoxyethanol is conducted, thereby it is possible to economically producing Quetiapine, that is, l l-(4-[2-(2- 10 hydroxyethoxy)ethyl]-l-piperazinyl)-dibenzo[b,fj[l,4]thiazepine, in an environmentally friendly manner. Particularly, the process is advantageous in that economic efficiency is assured because of use of the low-priced starting material, use of an organic solvent is minimized because a reaction is conducted in an aqueous solution, and it is possible to achieve the environmentally friendly and economical process having high commercial 15 usefulness because the number of reaction steps of the process is reduced and because generation of acidic waste is minimized.
公开了一种制备 l l-(4-[2-(2-羟基乙氧基)乙基]-l-哌嗪基)-二苯并[b,f][1,4]噻二嗪的过程。在该过程中,以低价的2,2'-二硫基水杨酸作为起始物质,经过与1-氯-2-5-硝基苯基的键合反应,在碱性水溶液中进行硝基还原反应,同时在存在等量卤化剂的情况下进行环化和氯化反应,与哌嗪的反应连续进行而不分离,并进行与2-卤乙氧基乙醇的反应,从而可以在环保的方式下经济地生产奎提亚平,即l l-(4-[2-(2-羟基乙氧基)乙基]-l-哌嗪基)-二苯并[b,f][1,4]噻二嗪。特别是,该过程具有经济效益,因为使用了低价的起始物质,由于反应在水溶液中进行,有机溶剂的使用被最小化,并且由于减少了过程的反应步骤和酸性废物的生成,可以实现具有高商业实用性的环保和经济过程。