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    • 15. 发明授权
    • Process for recycling amine isomer
    • 回收胺异构体的方法
    • US5082970A
    • 1992-01-21
    • US665506
    • 1991-03-06
    • Tamim F. Braish
    • Tamim F. Braish
    • C07B61/00C07C209/00C07C209/68C07C211/38C07C211/42
    • C07C209/68C07C211/38C07C2102/10Y02P20/582
    • A novel process for converting trans-isomeric N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthaleneamine to cis-isomeric N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthaleneamine is disclosed. The process involves contacting trans-isomeric N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthaleneamine, or a mixture of same with up to about an equal part by weight of the corresponding cis-isomer, with a basic equilibration agent like potassium tert.-butoxide in a reaction-inert polar organic solvent to ultimately afford a cis/trans-mixture wherein the amount of cis-amine present in said mixture achieves a constant value of about 2:1 on a weight-by-weight basis. The aforesaid resultant mixture is useful as an intermediate product that ultimately leads to pure cis-(1S) (4S)-N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthaleneamine (sertraline), which is a known antidepressant agent.
    • 将反式异构体N-甲基-4-(3,4-二氯苯基)-1,2,3,4-四氢-1-萘胺转化成顺式异构体N-甲基-4-(3,4-二氯苯基) 二氯苯基)-1,2,3,4-四氢-1-萘胺。 该方法包括将反式异构体N-甲基-4-(3,4-二氯苯基)-1,2,3,4-四氢-1-萘胺或其混合物与至多约等于重量份的 相应的顺式异构体与碱性平衡剂如叔丁醇钾在反应惰性极性有机溶剂中反应,最终得到顺式/反式混合物,其中所述混合物中存在的顺式胺的量达到恒定值 约2:1,以重量计。 上述所得混合物可用作最终导致纯的顺式 - (1S)(4S)-N-甲基-4-(3,4-二氯苯基)-1,2,3,4-四氢-1- 萘胺(舍曲林)是已知的抗抑郁药。