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    Method for producing an optically active 2,2-dimethylcyclopropanecarboxylic acid
    5.
    发明授权
    Method for producing an optically active 2,2-dimethylcyclopropanecarboxylic acid 失效
    光学活性2,2-二甲基环丙烷羧酸的制造方法

    公开(公告)号：US4542235A

    公开(公告)日：1985-09-17

    申请号：US482259

    申请日：1983-04-05

    申请人： Masayoshi Minai ,  Tadashi Katsura ,  Kazuhiko Hamada ,  Gohfu Suzukamo

    发明人： Masayoshi Minai ,  Tadashi Katsura ,  Kazuhiko Hamada ,  Gohfu Suzukamo

    IPC分类号： C07C51/487 ,  C07C61/04

    CPC分类号： C07C51/487

    摘要： A method for producing an optically active 2,2-dimethylcyclopropanecarboxylic acid useful as an intermediate for dehydropeptidase I inhibitors, medicines and agricultural chemicals, which comprises reacting an optically active diphenylethylamine represented by the formula, ##STR1## wherein R.sub.1 and R.sub.2 are each a hydrogen atom or a lower alkyl group, with 2,2-dimethylcyclopropanecarboxylic acid in a solvent to achieve the optical purification of said acid.

    摘要翻译： 一种用作脱水肽酶I抑制剂，药物和农药的中间体的光学活性2,2-二甲基环丙烷羧酸的制备方法，其包括使下式表示的光学活性二苯乙胺，其中R1和R2各自为氢 原子或低级烷基，与2,2-二甲基环丙烷羧酸在溶剂中实现所述酸的光学纯化。

    Process for the preparation of hydroxybenzaldehydes
    6.
    发明授权
    Process for the preparation of hydroxybenzaldehydes 失效
    制备羟基苯甲醛的方法

    公开(公告)号：US4584410A

    公开(公告)日：1986-04-22

    申请号：US670847

    申请日：1984-11-13

    申请人： Kazuhiko Hamada ,  Gohfu Suzukamo ,  Fujio Masuko ,  Makoto Nakamura

    发明人： Kazuhiko Hamada ,  Gohfu Suzukamo ,  Fujio Masuko ,  Makoto Nakamura

    IPC分类号： C07C47/565 ,  B01J31/02 ,  C07B61/00 ,  C07C45/00 ,  C07C45/45

    CPC分类号： C07C45/008

    摘要： In a Reimer-Tiemann reaction for the preparation of a mixture of two hydroxybenzaldehydes (i.e., salicylaldehyde and p-hydroxybenzaldehyde) by reacting phenol with chloroform and an aqueous alkali solution in a heterogeneous system, the two hydroxybenzaldehydes can be prepared in a controlled formation ratio, yield and reaction rate depending upon the conditions used when the reaction is carried out in the presence of a phase transfer catalyst selected from the group consisting of a cationic type phase transfer catalyst, an amphoteric type phase transfer catalyst and an anionic type phase transfer catalyst.

    摘要翻译： 在通过使苯酚与氯仿和非均相体系中的碱性水溶液反应制备两种羟基苯甲醛（即水杨醛和对羟基苯甲醛）的混合物的Reimer-Tiemann反应中，两种羟基苯甲醛可以以受控的形成比 ，产率和反应速率取决于反应在相转移催化剂存在下使用的条件，所述相转移催化剂选自阳离子型相转移催化剂，两性相转移催化剂和阴离子型相转移催化剂 。

    Process for preparation of hydroxybenzaldehydes
    7.
    发明授权
    Process for preparation of hydroxybenzaldehydes 失效
    羟基苯甲醛的制备方法

    公开(公告)号：US4469894A

    公开(公告)日：1984-09-04

    申请号：US388817

    申请日：1982-06-16

    申请人： Kazuhiko Hamada ,  Gohfu Suzukamo

    发明人： Kazuhiko Hamada ,  Gohfu Suzukamo

    IPC分类号： C07C47/565 ,  B01J23/00 ,  C07C45/00 ,  C07C67/00 ,  C07C45/45

    CPC分类号： C07C45/008

    摘要： In a Reimer-Tiemann reaction for the preparation of a mixture of salicylaldehyde and p-hydroxybenzaldehyde, improved yield of the product and high selectivity of salicylaldehyde can be obtained when an alkali metal salt of a phenol is reacted with a reaction mixture comprised of chloroform and a slurry of an alkali metal hydroxide (preferably, in a fine powder state thereof) and an inert organic solvent and optionally, a catalytic amount of a surfactant.

    摘要翻译： 在用于制备水杨醛和对羟基苯甲醛的混合物的Reimer-Tiemann反应中，当苯酚的碱金属盐与由氯仿和氯仿组成的反应混合物反应时，可以获得产物的高产率和水杨醛的高选择性 碱金属氢氧化物（优选细粉末状态）和惰性有机溶剂和任选的催化量的表面活性剂的浆料。

    Process for producing 5-halomethylfurfural
    8.
    发明授权
    Process for producing 5-halomethylfurfural 失效
    5-卤代甲基糠醛的制备方法

    公开(公告)号：US4424390A

    公开(公告)日：1984-01-03

    申请号：US437254

    申请日：1982-10-28

    申请人： Kazuhiko Hamada ,  Hiroshi Yoshihara ,  Gohfu Suzukamo

    发明人： Kazuhiko Hamada ,  Hiroshi Yoshihara ,  Gohfu Suzukamo

    IPC分类号： B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07D307/46

    CPC分类号： C07D307/46

    摘要： A process for producing 5-halomethylfurfural represented by the formula, ##STR1## wherein X is Cl or Br, which comprises carrying out a acid-decomposition of saccharide in a water/organic solvent/magnesium halide system with hydrochloric acid, sulfuric acid, hydrogen chloride or other mineral acid in the presence or absence of surface active agent as a catalyst. The 5-halomethylfurfural is useful as an intermediate of medicines, agricultural chemicals, perfumes and the like.

    摘要翻译： 一种由下式表示的5-卤代甲基糠醛的方法，其中X是Cl或Br，其中包括用盐酸，硫酸，氢气在水/有机溶剂/卤化镁体系中进行糖分解 氯化物或其他无机酸在表面活性剂的存在或不存在下作为催化剂。 5-卤代甲基糠醛可用作药物，农药，香料等的中间体。

    Support structure of loudspeaker unit and loudspeaker system
    9.
    发明授权
    Support structure of loudspeaker unit and loudspeaker system 有权
    扬声器单元和扬声器系统的支撑结构

    公开(公告)号：US07292706B2

    公开(公告)日：2007-11-06

    申请号：US10802767

    申请日：2004-03-18

    申请人： Kazuhiko Hamada

    发明人： Kazuhiko Hamada

    IPC分类号： H04R25/00

    CPC分类号： H04R1/025 ,  H04R2209/027

    摘要： A support structure of a loudspeaker unit is constructed to prevent transmission of vibrations of the loudspeaker unit to a cabinet so that the quality of sound can be improved, and so as to have excellent stability in its assembled condition. The support structure includes a cabinet having an opening in which the front side of the loudspeaker unit is located, an anchor to be connected to the backside of the loudspeaker unit, a support for supporting the anchor so that the center of gravity of the anchor inside the cabinet is fixed, and a positioning member for positioning the support. The support structure also includes a cushioning member that is fitted between the support and the positioning member.

    摘要翻译： 扬声器单元的支撑结构被构造成防止扬声器单元的振动传递到机柜，从而可以提高声音的质量，并且在其组装状态下具有优异的稳定性。 支撑结构包括具有扬声器单元的前侧所在的开口的壳体，连接到扬声器单元的背面的锚杆，用于支撑锚固件的支撑件，使得锚固件的重心在内部 机柜固定，定位构件用于定位支架。 支撑结构还包括装配在支撑件和定位构件之间的缓冲构件。

    Process for producing 5-methylfurfural
    10.
    发明授权
    Process for producing 5-methylfurfural 失效
    5-甲基糠醛生产工艺

    公开(公告)号：US4335049A

    公开(公告)日：1982-06-15

    申请号：US279004

    申请日：1981-06-30

    申请人： Kazuhiko Hamada ,  Goufu Suzukamo ,  Koichi Fujisawa

    发明人： Kazuhiko Hamada ,  Goufu Suzukamo ,  Koichi Fujisawa

    IPC分类号： C07D307/46

    CPC分类号： C07D307/46

    摘要： A process for producing 5-methylfurfural by reducing 5-chloromethylfurfural which is used as a starting material or to be obtained by decomposing glucides commercially available more cheaply with hydrochloric acid, with hydrogen in an organic solvent in the presence of a palladium catalyst.

    摘要翻译： 通过还原5-氯甲基糠醛制备5-甲基糠醛的方法，其用作起始原料，或通过在钯催化剂存在下，在有机溶剂中用氢气在盐酸中更容易地商购获得。