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    • 1. 发明授权
    • Enantiomeric resolution
    • 对映体分辨率
    • US5248813A
    • 1993-09-28
    • US960660
    • 1992-10-14
    • Thanikavelu ManimaranG. Patrick StahlyR. Carl Herndon, Jr.
    • Thanikavelu ManimaranG. Patrick StahlyR. Carl Herndon, Jr.
    • C07B57/00C07C51/487
    • C07C51/487C07B57/00
    • A process for obtaining a substantially pure enantiomer of an aryl-substituted aliphatic carboxylic acid is described. The process utilizes first an enantiomerically enriched mixture the of aryl-substituted aliphatic carboxylic acid obtained from kinetic resolution, diastereomeric crystallization or asymmetric synthesis processes. This enriched mixture is reacted with a base producing a salt that has the following properties:(1) has at least one eutectic point;(2) a composition that is not at the eutectic point; and(3) a eutectic composition that is closer to the racemic composition than is the eutectic composition of said aryl-substituted carboxylic acid.Substantially pure, enantiomeric salt is separated, leaving a mother liquor comprising the solvent and aryl-substituted aliphatic carboxylic acid enriched in the other enantiomer.
    • 描述了获得芳基取代的脂肪族羧酸的基本上纯的对映异构体的方法。 该方法首先利用从动力学拆分,非对映体结晶或不对称合成方法获得的芳基取代的脂族羧酸的对映体富集混合物。 该富集的混合物与产生具有以下性质的盐的碱反应:(1)具有至少一个共晶点; (2)不在共晶点的组成; 和(3)比所述芳基取代的羧酸的共晶组成更接近外消旋组合物的共晶组合物。 分离基本上纯的对映异构体盐,留下含有溶剂的母液和富集在另一对映异构体中的芳基取代的脂族羧酸。
    • 2. 发明授权
    • Enantiomeric resolution of aryl-substituted aliphatic carboxylic acids
    • 芳基取代的脂族羧酸的对映异构体拆分
    • US5278337A
    • 1994-01-11
    • US960620
    • 1992-10-14
    • Thanikavelu ManimaranG. Patrick StahlyR. Carl Herndon, Jr.
    • Thanikavelu ManimaranG. Patrick StahlyR. Carl Herndon, Jr.
    • C07B57/00C07C51/487
    • C07B57/00C07C51/487
    • A process for obtaining a substantially pure enantiomer of an aryl-substituted aliphatic carboxylic acid is described. The process utilizes first an enantiomerically enriched mixture the of aryl-substituted aliphatic carboxylic acid obtained from kinetic resolution, diastereomeric crystallization or asymmetric synthesis processes. This enriched mixture is reacted with a base producing a salt that has the following properties:1) has at least one eutectic point;2) a composition that is not at the eutectic point; and3) a eutectic composition that is closer to the racemic composition than is the eutectic composition of said aryl-substituted carboxylic acid.Substantially pure, enantiomeric salt is separated, leaving a mother liquor comprising the solvent and aryl-substituted aliphatic carboxylic acid enriched in the other enantiomer.
    • 描述了获得芳基取代的脂肪族羧酸的基本上纯的对映异构体的方法。 该方法首先利用从动力学拆分,非对映体结晶或不对称合成方法获得的芳基取代的脂族羧酸的对映体富集混合物。 该富集的混合物与产生具有以下性质的盐的碱反应:1)具有至少一个共晶点; 2)不在共晶点的组成; 和3)比所述芳基取代的羧酸的共晶组成更接近外消旋组合物的共晶组合物。 分离基本上纯的对映异构体盐,留下含有溶剂的母液和富集在另一对映异构体中的芳基取代的脂族羧酸。
    • 3. 发明授权
    • Enantiomeric resolution
    • 对映体分辨率
    • US5442117A
    • 1995-08-15
    • US165619
    • 1993-12-13
    • G. Patrick StahlyThanikavelu Manimaran
    • G. Patrick StahlyThanikavelu Manimaran
    • C07C209/88C07B57/00
    • C07C209/88
    • A process for obtaining a substantially pure enantiomer of an hydrocarbyl amine is described. The process utilizes first an enantiomerically enriched mixture the of hydrocarbyl amine obtained from kinetic resolution, diastereomeric crystallization or asymmetric synthesis processes. This enriched mixture is reacted with an inorganic acid producing a salt that has the following properties:1) has at least one eutectic point;2) a composition that is not at the eutectic point; and3) a eutectic composition that is closer to the racemiccomposition than is the eutectic composition of saidhydrocarbyl, or be a solid where the salt is a liquid. A substantially pure, enantiomeric salt is separated, leaving a mother liquor comprising the solvent and the hydrocarbyl amine enriched in the other enantiomer.
    • 描述了获得烃基胺基本上纯的对映异构体的方法。 该方法首先利用由动力学拆分,非对映体结晶或不对称合成方法获得的烃基胺的对映体富集混合物。 使富集的混合物与产生具有以下性质的盐的无机酸反应:1)具有至少一个共晶点; 2)不在共晶点的组成; 和3)比所述烃基的共晶组成更接近外消旋组合物的共晶组合物,或者是其中盐是液体的固体。 分离出基本上纯的对映异构体盐,留下含有溶剂的母液和富含另一对映异构体的烃基胺。