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    • 6. 发明申请
    • Method for producing optically active carboxylic acid
    • 光学活性羧酸的制备方法
    • US20060211882A1
    • 2006-09-21
    • US10550564
    • 2004-03-26
    • Akira AmanoDaisuke IgarashiNoboru Sayo
    • Akira AmanoDaisuke IgarashiNoboru Sayo
    • C07C51/36
    • C07C51/36C07B2200/07C07C53/128
    • A method for producing a desired optically active carboxylic acid with a high optical purity, wherein a complex catalyst used can be recovered and reused as an aqueous solution. The method contains the step of subjecting an &agr;,&bgr; -unsaturated carboxylic acid in water or a mixed solvent of water and a water-insoluble organic solvent in the presence of a sulfonated BINAP—Ru complex represented by the formula [3]: [RuX(arene){(SO?3#191M)?2#191-BINAP}]X [3]wherein X represents a chlorine atom, a bromine atom or an iodine atom, arene represents a benzene or an alkyl-substituted benzene, M represents an alkaline metal atom, and BINAP represents 2,2′-bis(diphenylphosphine)-1,1′-binaphthyl to an asymmetric hydrogenation. The sulfonated BINAP—Ru complex can be recycled.
    • 一种制备具有高光学纯度的所需光学活性羧酸的方法,其中可以回收使用的复合催化剂并将其再次用作水溶液。 该方法包括在由式[3]表示的磺化BINAP-Ru络合物的存在下使α,β-不饱和羧酸在水或水和水不溶性有机溶剂的混合溶剂中进行的步骤:[RuX (芳烃){(SO 3#191M)2#191-BINAP}] X [3]其中X表示氯原子,溴原子或碘原子,芳烃表示苯或烷基取代的苯,M 代表碱金属原子,BINAP代表2,2'-双(二苯基膦)-1,1'-联萘与不对称氢化反应。 磺化的BINAP-Ru络合物可以回收利用。
    • 7. 发明授权
    • Process for producing 3-1-menthoxypropane-1,2-diol
    • 制备3-1-薄荷氧基丙-1,2-二醇的方法
    • US06407293B1
    • 2002-06-18
    • US09962122
    • 2001-09-26
    • Akira AmanoTeruyoshi AkiyamaTakashi MiuraToshimitsu Hagiwara
    • Akira AmanoTeruyoshi AkiyamaTakashi MiuraToshimitsu Hagiwara
    • C07C3512
    • C07C43/196C07C41/03
    • A process for producing highly pure 3-1-menthoxypropane-1,2-diol safely and efficiently, and an intermediate to be used in the process. 3-1-menthoxypropane-1,2-diol represented by the chemical formula (IV) is produced by adding 1-menthol to a 1,2-epoxy-3-halogenopropane represented by the following general formula (I) (wherein X represents a halogen atom) in an organic solvent in the presence of a Lewis acid to produce a novel 1-halogeno-3-1-menthoxypropan-2-ol represented by the following general formula (II), then, epoxidating it with a base in the presence of a phase transfer catalyst to produce a 1,2-epoxy-3-1-menthoxypropane represented by the chemical formula (III), and further hydrolyzing it.
    • 安全有效地生产高纯度3-1-薄荷氧基丙二醇-1,2-二醇的方法,以及该方法中使用的中间体。 由化学式(IV)表示的3-1-薄荷氧基丙烷-1,2-二醇通过将1-薄荷醇加入到由下列通式(I)表示的1,2-环氧-3-氯代丙烷中(其中X表示 卤素原子)在有机溶剂中在路易斯酸存在下反应,得到由以下通式(II)表示的新型1-卤代-3-三氟甲氧基丙-2-醇,然后用碱进行环氧化 存在相转移催化剂以制备由化学式(III)表示的1,2-环氧-3-丁氧基丙烷,并进一步水解。