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23 条记录 (耗时 0.035 秒)

    Process for producing threo-3-(3,4-dihydroxyphenyl)serine
    1.
    发明授权
    Process for producing threo-3-(3,4-dihydroxyphenyl)serine 失效

    公开(公告)号：US5739387A

    公开(公告)日：1998-04-14

    申请号：US650539

    申请日：1996-05-20

    申请人： Yoshiaki Oda ,  Kazunori Iwakura

    发明人： Yoshiaki Oda ,  Kazunori Iwakura

    IPC分类号： A61P25/16 ,  C07C227/18 ,  C07C229/36 ,  C07D263/14 ,  C07C229/00

    CPC分类号： C07C229/36 ,  C07C227/18 ,  C07D263/14 ,  Y02P20/55

    摘要： Racemic or optically active threo-3-(3,4-dihydroxyphenyl)serine can be readily produced via a few short steps by a process involving the steps of reacting a racemic or optically active N-acyl DOPA derivative represented by the formula �I!: ##STR1## wherein X is a halogen atom; n is 0, 1, 2 or 3; R.sup.1 and R.sup.2 independently represent a protecting group for a hydroxyl group; R.sup.3 is a protecting group for carboxyl group; R.sup.4 is an alkyl group which may have a substituent or a phenyl group which may have a substituent; and a carbon marked with the symbol * is an asymmetric carbon, with a halogen radical generator, a cerium (IV) salt, or a persulfate salt in the presence of a copper catalyst to produce racemic or optically active oxazolines represented by the formula �IV!: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, n and * are as defined above; and thereafter conducting an oxazoline ring opening and removing R.sup.1, R.sup.2 and R.sup.3 and, optionally, removing X when n is 1, 2 or 3.

    Process for producing threo-3-(3,4-dihydroxyphenyl)serine
    2.
    发明授权
    Process for producing threo-3-(3,4-dihydroxyphenyl)serine 失效
    制备3-（3,4-二羟基苯基）丝氨酸的方法

    公开(公告)号：US5864041A

    公开(公告)日：1999-01-26

    申请号：US899635

    申请日：1997-07-24

    申请人： Yoshiaki Oda ,  Kazunori Iwakura

    发明人： Yoshiaki Oda ,  Kazunori Iwakura

    IPC分类号： A61P25/16 ,  C07C227/18 ,  C07C229/36 ,  C07D263/14 ,  C07D263/52

    CPC分类号： C07C229/36 ,  C07C227/18 ,  C07D263/14 ,  Y02P20/55

    摘要： Racemic or optically active threo-3-(3,4-dihydroxyphenyl)serine can be readily produced via a few short steps by a process involving the steps of reacting a racemic or optically active N-acyl DOPA derivative represented by the formula �I!: ##STR1## wherein X is a halogen atom; n is 0, 1, 2 or 3; R.sup.1 and R.sup.2 independently represent a protecting group for a hydroxyl group; R.sup.3 is a protecting group for carboxyl group; R.sup.4 is an alkyl group which may have a substituent or a phenyl group which may have a substituent; and a carbon marked with the symbol * is an asymmetric carbon, with a halogen radical generator, a cerium (IV) salt, or a persulfate salt in the presence of a copper catalyst to produce racemic or optically active oxazolines represented by the formula �IV!: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, n and * are as defined above; and thereafter conducting an oxazoline ring opening and removing R.sup.1, R.sup.2 and R.sup.3 and, optionally, removing X when n is 1, 2 or 3.

    摘要翻译： 外消旋或光学活性的3-（3,4-二羟基苯基）丝氨酸可以通过几个步骤容易地通过包括使式[I]表示的外消旋或光学活性的N-酰基DOPA衍生物 ：其中X是卤素原子; n为0,1,2或3; R1和R2独立地表示羟基的保护基; R3是羧基的保护基; R4是可以具有取代基的烷基或可以具有取代基的苯基; 并且在铜催化剂存在下用符号*表示的碳是不对称碳，具有卤素自由基发生剂，铈（Ⅳ）盐或过硫酸盐，以制备由式[Ⅳ]表示的外消旋或光学活性的恶唑啉 ]：其中R1，R2，R3，R4，X，n和*如上定义; 然后进行恶唑啉环开放并除去R1，R2和R3，并且当n为1,2或3时，任选地除去X。

    Producing unsaturated esters by a lanthanide metal alkoxide catalyzed transesterification process
    3.
    发明授权
    Producing unsaturated esters by a lanthanide metal alkoxide catalyzed transesterification process 失效
    通过镧系金属醇盐催化酯交换法生产不饱和酯

    公开(公告)号：US06342627B1

    公开(公告)日：2002-01-29

    申请号：US09459919

    申请日：1999-12-14

    申请人： Yoshiaki Oda ,  Makoto Yako ,  Kazunori Iwakura

    发明人： Yoshiaki Oda ,  Makoto Yako ,  Kazunori Iwakura

    IPC分类号： C07C6702

    CPC分类号： C07C213/06 ,  C07C67/08 ,  C07C69/54 ,  C07C219/08

    摘要： There is disclosed a process for producing an unsaturated ester of the formula (3): wherein R1, R2 and R3 independently represent hydrogen, halogen, alkyl, alkenyl and the like and R5 represents alkyl which may be substituted and the like, which process is characterized by subjecting an unsaturated ester of the formula (1): wherein R1, R2 and R3 have the same meaning as previously defined and R4 represents alkyl or phenyl and the like, to a transesterification reaction with a hydroxy compound of the formula (2): R5OH  (2) wherein R5 has the same meaning as previously defined, in the presence of a lanthanoide metal alkoxide.

    摘要翻译： 公开了制备式（3）的不饱和酯的方法：其中R1，R2和R3独立地表示氢，卤素，烷基，烯基等，R5代表可被取代的烷基等，该方法是 其特征在于使式（1）的不饱和酯：其中R 1，R 2和R 3具有与前述定义相同的含义，R 4表示烷基或苯基等，与式（2）的羟基化合物进行酯交换反应， ：其中R 5具有与先前定义的相同的含义，在镧系金属醇盐存在下。

    Process for the preparation of phenylhydrazines
    4.
    发明授权
    Process for the preparation of phenylhydrazines 失效
    苯肼制备方法

    公开(公告)号：US06852890B1

    公开(公告)日：2005-02-08

    申请号：US09959661

    申请日：2000-03-03

    申请人： Kazuyuki Tanaka ,  Yoshiaki Oda

    发明人： Kazuyuki Tanaka ,  Yoshiaki Oda

    IPC分类号： C07C241/02 ,  C07C243/22

    CPC分类号： C07C241/02 ,  C07C243/22

    摘要： A process for the preparation of a phenylhydrazine or an inorganic acid salt thereof of the formula (1): wherein X is a hydrogen or halogen atom; Y is a halogen atom; and W is a hydrogen atom or —ZR in which Z is an oxygen or sulfur atom, and R is a hydrogen atom, an alkyl group, a haloalkyl group, and so on, by the hydrolysis of a phenylhydrazine derivative of the formula (2): where X, Y and W are the same as defined above, and the Q groups are a hydrogen atom, an ammonium group or an alkali metal atom in the presence of water and an inorganic acid, in which the concentration of the inorganic acid is at least 6 moles per 1 kg of water in a reaction system.

    摘要翻译： 一种制备式（1）的苯肼或其无机酸盐的方法：其中X是氢或卤素原子; Y是卤原子; W是氢原子或-ZR，其中Z是氧或硫原子，R是氢原子，烷基，卤代烷基等，通过式（2）的苯肼衍生物的水解 ）：其中X，Y和W与上述定义相同，Q基团在水和无机酸存在下为氢原子，铵基或碱金属原子，其中无机酸的浓度 在反应体系中每1kg水至少6摩尔。

    Process for producing furylpropargylcarbinol and derivative thereof
    5.
    发明授权
    Process for producing furylpropargylcarbinol and derivative thereof 失效
    呋喃基炔丙醇及其衍生物的制备方法

    公开(公告)号：US5239092A

    公开(公告)日：1993-08-24

    申请号：US974506

    申请日：1992-11-12

    申请人： Kenji Saito ,  Sanshiro Matsuo ,  Yoshiaki Oda

    发明人： Kenji Saito ,  Sanshiro Matsuo ,  Yoshiaki Oda

    IPC分类号： C07D307/42

    CPC分类号： C07D307/42

    摘要： A process for producing furylpropargylcarbinol or a derivative thereof represented by the formula (I): ##STR1## wherein R.sup.1 represents hydrogen or methyl, wherein comprises subjecting a haloallylfurylcarbinol or a derivative thereof represented by the formula (II): ##STR2## wherein R.sup.1 represents a hydrogen or methyl and R.sup.2 represents chlorine, bromine or iodine, to a dehydrohalogenation reaction with a base in a reaction solvent. Furylpropargylcarbinol and a derivative thereof produced according to the process of the present invention are very important as intermediates of agricultural chemicals, perfumes and medicines, and particularly applicable to intermediates of prallethrin.

    摘要翻译： 一种由式（I）表示的呋喃基炔丙醇或其衍生物的制备方法：其中R 1表示氢或甲基，其中包括使由式（II）表示的卤代烯丙基甲醇或其衍生物： （II）其中R1表示氢或甲基，R2表示氯，溴或碘，与反应溶剂中的碱进行脱卤化氢反应。 根据本发明方法生产的呋喃基炔丙醇及其衍生物作为农药，香料和药物的中间体是非常重要的，特别适用于丙醚菊酯的中间体。

    Process for producing aromatic peroxycarboxylic acids
    8.
    发明授权
    Process for producing aromatic peroxycarboxylic acids 失效
    制备芳族过氧羧酸的方法

    公开(公告)号：US5523468A

    公开(公告)日：1996-06-04

    申请号：US341901

    申请日：1994-11-15

    申请人： Yoshiaki Oda

    发明人： Yoshiaki Oda

    IPC分类号： B01J23/16 ,  B01J23/70 ,  C07B61/00 ,  C07C407/00 ,  C07C409/30

    CPC分类号： C07C407/00

    摘要： A process for producing an aromatic peroxycarboxylic acid comprising reacting an aromatic aldehyde and oxygen in the presence of at least one oxide of a transition metal selected from chromium, manganese, iron, cobalt, nickel and copper in a solvent is provided. According to this invention, aromatic peroxycarboxylic acids can safely and easily be obtained in high yield without causing decomposition of the products.

    摘要翻译： 提供一种制备芳族过氧羧酸的方法，其包括在至少一种选自铬，锰，铁，钴，镍和铜中的过渡金属的氧化物存在下在溶剂中使芳族醛和氧反应。 根据本发明，芳族过氧羧酸可以安全，容易地以高产率获得而不会引起产物分解。

    Process for preparing pyridazin-3-on derivatives
    10.
    发明授权
    Process for preparing pyridazin-3-on derivatives 失效
    制备哒嗪-3-酮衍生物的方法

    公开(公告)号：US06500951B1

    公开(公告)日：2002-12-31

    申请号：US09857033

    申请日：2001-06-28

    申请人： Masao Yanagawa ,  Masahiko Mizuno ,  Yoshiaki Oda

    发明人： Masao Yanagawa ,  Masahiko Mizuno ,  Yoshiaki Oda

    IPC分类号： C07D23714

    CPC分类号： C07D237/14

    摘要： A pyridazin-3-on derivative of the formula (1): in which R2 is a hydrogen atom or a C1-C3 alkyl group, R3 is a hydrogen atom or a C1-C3 alkyl group, and Q is an optionally substituted phenyl group can be prepared at a high yield and high purity by ring closing a carboxylic acid derivative of the formula (2): in which R2, R3 and Q are the same as defined above, or its salt in the presence of a nitrogen-containing aromatic compound and a boron compound.

    摘要翻译： 式（1）的哒嗪-3-酮衍生物：其中R2是氢原子或C1-C3烷基，R3是氢原子或C1-C3烷基，Q是任选取代的苯基 可以通过闭环式（2）的羧酸衍生物以高产率和高纯度制备：其中R2，R3和Q与上述定义相同，或其盐在含氮芳族化合物存在下 化合物和硼化合物。