[EN] METHOD FOR RACEMISATION OF (S)-(+)- AND (R)-(-)-10,11-DIHYDRO-10-HYDROXY-5HDIBENZ/B,F/AZEPINE-5-CARBOXAMIDE AND OPTICALLY ENRICHED MIXTURES THEREOF<br/>[FR] PROCEDE DE RACEMISATION DE (S)-(+)- ET (R)-(-)-10,11-DIHYDRO-10-HYDROXY-5H-DIBENZ/B,F/AZEPINE-5-CARBOXAMIDE, ET LEURS MELANGES ENRICHIS OPTIQUEMENT
申请人:PORTELA & CA SA
公开号:WO2004099153A1
公开(公告)日:2004-11-18
A high-yielding method for racemisation of (S)-(+)- and (R)-(-)-10, 11- dihydro-l0-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide and a useful intermediate, 10-chloro-10, 11 dihydro-5H-dibenz/b,f/azepine-5-carboxamide (VII) are disclosed. Also disclosed are methods for the racemisation of optically pure or optically enriched mixtures of (S)-(+)-10,11-dihydro-l0-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide (I) and (R)-(-)-10,11-dihydro-l0-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide (II) to racemic (±)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide (III).
本文揭示了一种高产的(S)-(+)-和(R)-(-)-10,11-二氢-10-羟基-5H-二苯并[b,f]氮杂-5-羧酰胺的消旋方法,以及一个有用的中间体,10-氯-10,11-二氢-5H-二苯并[b,f]氮杂-5-羧酰胺(VII)。还揭示了将光学纯或光学富集的(S)-(+)-10,11-二氢-10-羟基-5H-二苯并[b,f]氮杂-5-羧酰胺(I)和(R)-(-)-10,11-二氢-10-羟基-5H-二苯并[b,f]氮杂-5-羧酰胺(II)消旋为(±)-10,11-二氢-10-羟基-5H-二苯并[b,f]氮杂-5-羧酰胺(III)的方法。