发明名称 |
PROCESS FOR THE PREPARATION OF KETIMINES |
摘要 |
Described is a process for the preparation of compounds of formula (1a) which comprises reacting an isomeric mixture consisting of from 75 to 95 % of compound of formula (2a) and from 5 to 25 % of a compound of formula (2b) with methylamine, in a suitable solvent, to form a sertraline-imine isomeric mixture consisting of from 75 to 95 % of formula (1a) and from 5 to 25 % of formula (1b)(A1), or reacting an isomeric mixture consisting of from 75 to 95 % of a compound of formula (2a) and from 5 to 25 % of a compound of formula (2b) with methylamine, in a suitable solvent, using suitable methods of isolation to form an enriched sertraline-imine isomeric mixture, consisting of > 99 % of a compound of formula (1a) and < 1 % of a compound of formula (1b)(A2); and then subjecting the sertraline-imine isomeric mixture obtained according to reaction route (A1) or (A2), in a suitable solvent, to recrystallisation (B), in accordance with scheme (I) wherein in formula (1a), R1, R2 and R3 are each independently of the others hydrogen, halogen, trifluoromethyl or C1-C4alkoxy and formulae (1b), (2a) and (2b) are as defined in the description.
|
申请公布号 |
WO0136377(A1) |
申请公布日期 |
2001.05.25 |
申请号 |
WO2000EP10970 |
申请日期 |
2000.11.07 |
申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC.;THOMMEN, MARC;HAFNER, ANDREAS;KOLLY, ROMAN;KIRNER, HANS-JOERG;BRUNNER, FREDERIC |
发明人 |
THOMMEN, MARC;HAFNER, ANDREAS;KOLLY, ROMAN;KIRNER, HANS-JOERG;BRUNNER, FREDERIC |
分类号 |
C07B61/00;C07C249/02;C07C251/20;(IPC1-7):C07C249/02 |
主分类号 |
C07B61/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|