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69 条记录 (耗时 0.033 秒)

    1-substituted-2-diphenylphosphinonaphthalene and transition metal complex comprising the same as a ligand
    1.
    发明授权
    1-substituted-2-diphenylphosphinonaphthalene and transition metal complex comprising the same as a ligand 失效
    1-取代-2-二苯基膦基萘和与配体相同的过渡金属络合物

    公开(公告)号：US5756760A

    公开(公告)日：1998-05-26

    申请号：US812549

    申请日：1997-03-07

    申请人： Sotaro Miyano ,  Tetsutaro Hattori ,  Yasuko Komuro ,  Hidenori Kumobayashi

    发明人： Sotaro Miyano ,  Tetsutaro Hattori ,  Yasuko Komuro ,  Hidenori Kumobayashi

    IPC分类号： B01J31/24 ,  C07B53/00 ,  C07F9/572 ,  C07F15/00 ,  C07F9/02 ,  C07D207/00

    CPC分类号： C07F9/5721 ,  C07F15/0046 ,  C07F15/006 ,  C07F15/008 ,  Y02P20/55

    摘要： A 1-substituted-2-diphenylphosphinonaphthalene represented by formula (I): ##STR1## wherein at least one of R.sup.1, R.sup.2, R.sup.3, and R.sup.4, which may be the same or different, represents a lower alkyl group having 1 to 4 carbon atoms which may be substituted with an alkoxy group, a phenyl group or --OR.sup.6 (wherein R.sup.6 represents a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms or an alcohol-protective group), and the rest of them represent a hydrogen atom; A represents a single bond or a methylene group; and R.sup.5 represents a substituted or unsubstituted phenyl group; and a transition metal complex comprising the 1-substituted-2-diphenylphosphinonaphthalene as a ligand. The transition metal complex is useful as a catalyst in asymmetric synthesis.

    摘要翻译： 由式（I）表示的1-取代-2-二苯基膦基萘：其中R 1，R 2，R 3和R 4中至少有一个可以相同或不同，表示具有1 至4个可被烷氧基取代的碳原子，苯基或-OR 6（其中R6表示氢原子，碳原子数1〜4的低级烷基或醇保护基），其余的 表示氢原子; A表示单键或亚甲基; R5表示取代或未取代的苯基; 以及包含1-取代-2-二苯基膦基萘作为配体的过渡金属络合物。 过渡金属络合物可用作不对称合成中的催化剂。

    Process for preparing optically active carnitine ester
    2.
    发明授权
    Process for preparing optically active carnitine ester 失效
    制备光学活性肉碱酯的方法

    公开(公告)号：US06197996B1

    公开(公告)日：2001-03-06

    申请号：US08139861

    申请日：1993-10-22

    申请人： Takanao Taketomi ,  Toshiaki Sakaguchi ,  Hidenori Kumobayashi

    发明人： Takanao Taketomi ,  Toshiaki Sakaguchi ,  Hidenori Kumobayashi

    IPC分类号： C07C22900

    CPC分类号： C07C227/32

    摘要： A process for preparing an optically active carnitine ester represented by formula (I): wherein R represents a lower alkyl group; and X represents a halogen atom, is disclosed, comprises asymmetrically hydrogenating a &ggr;-trimethylammonium-3-oxobutanoic ester halide represented by formula (II): wherein R and X are as defined above, in the presence of a ruthenium-optically active phosphine complex as a catalyst. An optically active carnitine ester of any desired isomerism can be obtained through simple operation in high yield at high optical purity. The substrate used is easily available.

    摘要翻译： 一种制备由式（I）表示的光学活性肉碱酯的方法：其中R表示低级烷基; 并且X表示卤素原子，包括在钌光学活性膦配合物存在下不对称地氢化由式（II）表示的γ-三甲基铵-3-氧代丁酸酯卤化物：其中R和X如上所定义 作为催化剂。 可以通过在高光学纯度下以高产率的简单操作获得任何所需异构体的光学活性肉碱酯。 使用的基材很容易获得。

    Substituted acetoxyazetidinone derivatives and process for preparing 4-acyloxyazetidinone derivatives
    4.
    发明授权
    Substituted acetoxyazetidinone derivatives and process for preparing 4-acyloxyazetidinone derivatives 失效
    取代的乙酰氧基氮杂环丁酮衍生物和制备4-酰氧基氮杂环丁酮衍生物的方法

    公开(公告)号：US5606052A

    公开(公告)日：1997-02-25

    申请号：US436812

    申请日：1995-05-08

    申请人： Takao Saito ,  Hidenori Kumobayashi ,  Shunichi Murahashi

    发明人： Takao Saito ,  Hidenori Kumobayashi ,  Shunichi Murahashi

    IPC分类号： B01J27/128 ,  B01J31/12 ,  B01J31/30 ,  C07B61/00 ,  C07D205/08 ,  C07F7/18

    CPC分类号： C07F7/186 ,  C07D205/08 ,  C07F7/1892

    摘要： A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R.sup.3 represents an alkyl group having from 1 to 10 carbon atoms which may be substituted with a halogen atom, a cyano group, a lower alkoxy group or a phenyl group, or a substituted or unsubstituted phenyl group, provided that the .alpha.-positioned carbon atom of said alkyl group should not have more than two halogen atoms; and R.sup.4 represents a hydrogen atom, a lower alkyl group, or a lower alkoxycarbonyl group, which is useful as an intermediate for penem antibiotics is disclosed, comprising reacting azetidinone or a derivative thereof represented by formula (II): ##STR2## wherein R.sup.1 is as defined above, and R.sup.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxycarbonyl group, or a carboxyl group, with a carboxylic acid represented by formula (III):R.sup.3 COOH (III)wherein R.sup.3 is as defined above, in the presence of (1) a transition metal compound selected from a ruthenium compound, an osmium compound, and a cobalt compound, (2) an aldehyde having 2 or more carbon atoms, provided that the carbon atom at the .alpha.-position thereof should not have two or more halogen atoms, and (3) oxygen. The compound (IV) can be prepared with safety through simple and easy operations.

    摘要翻译： 制备由式（Ⅳ）表示的4-酰氧基氮杂环丁酮或其衍生物的方法：原子，低级烷基，羟乙基或被保护的羟乙基; R3表示可以被卤素原子，氰基，低级烷氧基或苯基取代的具有1至10个碳原子的烷基或取代或未取代的苯基，条件是α-位置的碳原子 的所述烷基不应具有多于两个的卤素原子; 其中R 4表示可用作Penem抗生素中间体的氢原子，低级烷基或低级烷氧基羰基，包括使由式（II）表示的氮杂环丁酮或其衍生物： 其中R 1如上所定义，R 2表示氢原子，低级烷基，低级烷氧基羰基或羧基，与式（III）表示的羧酸：R3COOH（III）其中R3如上定义 在（1）选自钌化合物，锇化合物和钴化合物的过渡金属化合物的存在下，（2）具有2个或更多个碳原子的醛，条件是其α位上的碳原子 不应该有两个或更多的卤素原子，和（3）氧。 化合物（IV）可以通过简单和容易的操作安全地制备。

    Process for producing optically active alcohols
    9.
    发明授权
    Process for producing optically active alcohols 失效
    光学活性醇的制造方法

    公开(公告)号：US4962242A

    公开(公告)日：1990-10-09

    申请号：US66164

    申请日：1987-06-25

    申请人： Nobuo Yamada ,  Toshiyuki Takezawa ,  Noboru Sayo ,  Misao Yagi ,  Hidenori Kumobayashi ,  Susumu Akutagawa ,  Hidemasa Takaya ,  Shinichi Inoue ,  Ryoji Noyori

    发明人： Nobuo Yamada ,  Toshiyuki Takezawa ,  Noboru Sayo ,  Misao Yagi ,  Hidenori Kumobayashi ,  Susumu Akutagawa ,  Hidemasa Takaya ,  Shinichi Inoue ,  Ryoji Noyori

    IPC分类号： C07C29/17

    CPC分类号： C07C29/172 ,  C07B2200/07

    摘要： A process for producing an optically active alcohol represented by formula (I): ##STR1## wherein R.sub.1 is an alkyl group having from 2 to 11 carbon atoms, an alkenyl group having from 3 to 11 carbon atoms, an alkadienyl group having from 6 to 11 carbon atoms, a cyclohexyl group, an cyclohexylmethyl group, or a cyclohexylethyl group, provided that the olefin in the alkenyl group or alkadienyl group is not conjugated to the olefin at the 2-position thereof; and * means an asymmetric carbon atom,is disclosed, comprising subjecting an olefinic alcohol represented by formula (II): ##STR2## wherein R.sub.1 is the same as defined above to asymmetric hydrogenation in the presence of, as a catalyst, a ruthenium-optically active phosphine complex.According to the process of the invention, the desired optically active alcohols which are useful not only as intermediates for the manufacture of perfumes and vitamin E but also as liquid crystal materials can be produced with high optical purities.

    摘要翻译： 一种制备由式（I）表示的光学活性醇的方法：其中R1是具有2至11个碳原子的烷基，具有3至11个碳原子的链烯基，具有 环己基，环己基甲基或环己基乙基，条件是烯基或链二烯基中的烯烃在2-位没有与烯烃共轭; 和*表示不对称碳原子，包括使式（II）表示的烯属醇：其中R 1与上述定义相同，在作为催化剂的存在下进行不对称氢化 钌 - 光学活性膦配合物。 根据本发明的方法，不仅可用于制造香料和维生素E，而且用作液晶材料的中间体所需的光学活性醇可以以高光学纯度生产。