The invention disclosed in this application relates to an improved process for the preparation of aripiprazole (1) which comprises (i) Reacting 6-hydroxy-l-indanone (11) with 1,4-dihalobutane (12) in the presence of a base and a solvent at a temperature in the range of 90 to 110 deg C to form the novel intermediate 6-(4-halo butoxy)-indan-l-one (3), (ii) reacting the novel intermediate with 1-(2,3-clichlorophenyl)-piperazine (9) to get another novel intermediate 6-[4-[4-(2,3-dichlorophenyl)-l-piperazinyl] butoxy]-indan-l-one (2) and (iii) Reacting the resulting novel compound with sodium azide. The invention also relates to the novel intermediates of the formulae (2) & (3) and processes for their preparation.
该申请公开的发明涉及一种改进的
阿立哌唑(1)制备工艺,包括(i)在存在碱和溶剂的条件下,将
6-羟基-1-茚酮(11)与1,4-二卤
丁烷(12)在90至110摄氏度范围内反应,形成新的中间体6-(4-卤丁氧基)-
茚-1-酮(3),(ii)将新的中间体与1-(2,3-二
氯苯基)-
哌嗪(9)反应,得到另一个新的中间体6-[4-[4-(2,3-二
氯苯基)-1-
哌嗪基]氧基]-
茚-1-酮(2),以及(iii)将所得的新化合物与偶氮氮化
钠反应。该发明还涉及公式(2)和(3)的新中间体以及其制备工艺。