Novel process for preparation of 10-oxo-10, 11-dihydro-5h-dibenz [b,f] azepine-5-carbox- amide (oxcarbazepine) via intermediate, 10-methoxy-5h-debenz[b,f] azepine-5-carbonyl- chloride
申请人:Parenky Chandrashekar
公开号:US20070032647A1
公开(公告)日:2007-02-08
A process for preparation of 10-oxo-10,11-dihydro-5H-dibenz[b,f]azepine-5-carboxamide (oxcarbazepine) via intermediate 10-methoxy-5H-dibenz[b,f]azepine-5-carbonyl chloride, comprising the steps: a) Preparation of an intermediate 10-methoxy-5H-dibenz[b,f]azepine-5 carbonyl, chloride from 10-methoxyiminostillbene using bis (trichloromethyl) carbonate (BTC) with organic base such as aliphatic or aromatic tertiary amines in organic solvent; b) Conversion of the intermediate to 10-methoxy-5H-dibenz[b,f]azepine-5-carboxamide using ammonia in organic solvent; c) Formation of oxcarbazepine from step (b) using Bronsted acid in an organic solvent at a temperature between 25° C.-80° C., preferably at 50° C. to 70° C.; and d) Isolation of oxcarbazepine.
一种制备10-氧代-10,11-二氢-5H-二苯[b,f]氮杂环-5-羧酰胺(奥卡西平)的方法,通过中间体10-甲氧基-5H-二苯[b,f]氮杂环-5-羰基氯化物,包括以下步骤:a)使用双(三氯甲基)碳酸酯(BTC)和有机溶剂中的脂肪族或芳香族三级胺等有机碱来自10-甲氧基亚胺基仲苯制备中间体10-甲氧基-5H-二苯[b,f]氮杂环-5羰基氯化物;b)使用有机溶剂中的氨将中间体转化为10-甲氧基-5H-二苯[b,f]氮杂环-5-羧酰胺;c)在有机溶剂中,在25℃-80℃的温度范围内,优选在50℃至70℃的温度下使用布朗斯特酸将步骤(b)中的中间体转化为奥卡西平;d)分离奥卡西平。