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    • 104. 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。
    • 105. 发明授权
    • Process for production of alkenyl substituted aromatic compound
    • 烯基取代芳族化合物的制备方法
    • US4978789A
    • 1990-12-18
    • US376929
    • 1989-07-10
    • Katsuo TaniguchiShigeki FujikawaYoshito Kurano
    • Katsuo TaniguchiShigeki FujikawaYoshito Kurano
    • C07C37/00C07C209/68
    • B01J23/862B01J23/825B01J23/835B01J23/8472B01J37/031C07C209/68C07C37/001B01J2523/00
    • A process for producing an alkenyl substituted aromatic compound having the general formula (I): ##STR1## wherein Ar represents an aromatic ring, R.sup.1 represents an alkenyl group having 2 to 8 carbon atoms, p is 1, 2, or 3 provided that R.sup.1 may be the same or different when p is 2 or 3, R.sup.2 represents an alkyl group having 1 to 8 carbon atoms, q is 0, 1, or 2 provided that R.sup.2 may be the same or different when q is 2, X represents --OH or --NR.sup.3 R.sup.4 wherein R.sup.3 and R.sup.4 independently represent hydrogen or an alkyl group having 1 to 2 carbon atoms, n is 1 or 2, provided that the sum of p and q is 1, 2, or 3 comprising the step of catalytically dehydrogenating an alkyl substituted aromatic compound having the general formula (III): ##STR2## wherein R.sup.5 represents an alkyl group having 2 to 8 carbon atoms and Ar, R.sup.2, X, p, q, and n are the same as defined above, n is 1 or 2, provided that R.sup.5 may be the same or different when p is 2 or 3 in the presence of a catalyst comprising (a) at least one iron oxide as a main component and (b) at least one oxide of metals belonging to the group III, IV or V of the periodic table of atoms.This catalyst can produce an alkenyl substituted aromatic compound having a hydroxyl or amino group in the aromatic ring thereof from the dehydrogenation of the corresponding alkyl substituted aromatic compound at a high yield and high selectivity and has a prolonged catalyst life.
    • 一种制备具有通式(I)的烯基取代的芳族化合物的方法:其中Ar表示芳族环,R 1表示具有2至8个碳原子的链烯基,p是1,2或3 条件是当p为2或3时,R 1可以相同或不同,R 2表示具有1至8个碳原子的烷基,q为0,1或2,条件是当q为2时,R 2可以相同或不同, X表示-OH或-NR 3 R 4,其中R 3和R 4独立地表示氢或具有1至2个碳原子的烷基,n为1或2,条件是p和q之和为1,2或3,包括步骤 催化脱氢具有通式(III)的烷基取代的芳族化合物:其中R 5表示具有2至8个碳原子的烷基,Ar,R 2,X,p,q和n与 n为1或2,条件是当催化剂存在时p为2或3时,R 5可以相同或不同,所述催化剂包含(a)至少一种i 氧化物作为主要成分,和(b)属于元素周期表第III,IV或V族的金属的至少一种氧化物。 该催化剂可以以高产率和高选择性从相应的烷基取代的芳族化合物的脱氢产生其芳环中具有羟基或氨基的烯基取代的芳族化合物,并具有延长的催化剂寿命。