Ruthenium-optically active phosphine complex, process for the
preparation thereof and process for the preparation of optically active
4-methyl-2-oxetanone using same
    42.
    发明授权
    Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same 失效
    钌光学活性膦络合物,其制备方法和使用其制备光学活性4-甲基-2-氧杂环丁酮的方法

    公开(公告)号:US5981771A

    公开(公告)日:1999-11-09

    申请号:US100755

    申请日:1998-06-22

    摘要: The present invention provides a catalyst which exhibits a high catalytic activity and allows asymmetric reaction in a high asymmetric yield to obtain a reaction product having a high optical purity. The present invention also provides a process for the preparation of an optically active 4-methyl-2-oxetanone having a high optical purity useful as starting material of polymer in a high yield in a short period in the presence of the foregoing catalyst. A novel ruthenium-iodo-optically active phosphine complex is provided, represented by the following general formula (1):Ru--I.sub.2 -(R.sup.1 -BINAP) (1)wherein R.sup.1 -BINAP represents an optically active tertiary phosphine represented by the following general formula (2): ##STR1## wherein R.sup.1 represents an aryl group which may have a substituent selected from the group consisting of a C.sub.1-4 lower alkyl group, a C.sub.1-4 lower alkoxy group, a C.sub.1-4 lower alkylamino group, and a halogen atom or a C.sub.3-8 cycloalkyl group.

    摘要翻译: 本发明提供一种催化活性高的催化剂,能够以不对称产率进行不对称反应,得到光学纯度高的反应产物。 本发明还提供了在上述催化剂存在下,在短时间内以高收率制备具有高光学纯度的光学纯度高的光学活性4-甲基-2-氧杂环丁酮的方法。 提供了由以下通式(1)表示的新型钌 - 碘 - 光学活性膦配合物:Ru-I2-(R1-BINAP)(1)其中R1-BINAP表示由以下通式表示的光学活性叔膦 式(2):其中R1表示可以具有选自C 1-4低级烷基,C 1-4低级烷氧基,C 1-4低级烷基氨基和卤素原子的取代基的芳基 或C 3-8环烷基。

    Liquid crystal compound and liquid crystal composition containing the
same
    44.
    发明授权
    Liquid crystal compound and liquid crystal composition containing the same 失效
    液晶化合物和含有它们的液晶组合物

    公开(公告)号:US5716542A

    公开(公告)日:1998-02-10

    申请号:US637284

    申请日:1996-04-24

    摘要: A liquid crystal compound represented by formula (I) and a liquid crystal composition containing the same. The compound exhibits an antiferroelectric liquid crystal phase and has good compatibility with known liquid crystal compounds. ##STR1## wherein R.sup.1 represents a straight-chain or branched alkyl, alkoxy, alkoxycarbonyl, alkanoyloxy or alkoxycarbonyloxy group having 4 to 16 carbon atoms; R.sup.2 represents a straight-chain alkyl group having 4 to 10 carbon atoms or a branched alkyl group containing 1 to 3 carbon atoms in its branch and 4 to 12 carbon atoms in total; X represents an oxygen or sulfur atom; rings A and B each represent an F-substituted or unsubstituted phenylene group, a cyclohexylene group or a divalent nitrogen-containing heterocyclic group, provided that either one of rings A and B is the nitrogen-containing heterocyclic group; ring C represents an F-substituted or unsubstituted phenylene group; and C* represents an asymmetric carbon atom.

    摘要翻译: 由式(I)表示的液晶化合物和含有该液晶化合物的液晶组合物。 该化合物表现出反铁电液晶相,与已知的液晶化合物具有良好的相容性。 (I)其中R1表示具有4至16个碳原子的直链或支链烷基,烷氧基,烷氧基羰基,烷酰氧基或烷氧基羰氧基; R2表示碳原子数为4〜10的直链烷基或碳原子数为1〜3的支链烷基,总共为4〜12个碳原子。 X表示氧或硫原子; 环A和B各自表示F取代或未取代的亚苯基,亚环己基或二价含氮杂环基,条件是环A和B中的任一个为含氮杂环基; 环C表示F取代或未取代的亚苯基; C *表示不对称碳原子。

    Electrophotographic photoreceptor
    46.
    发明授权
    Electrophotographic photoreceptor 失效
    电子照相感光体

    公开(公告)号:US5443933A

    公开(公告)日:1995-08-22

    申请号:US118823

    申请日:1993-09-10

    IPC分类号: G03G5/06 G03G5/047 G03G5/05

    CPC分类号: G03G5/0517 G03G5/047

    摘要: An electrophotographic photoreceptor which is highly sensitive to light having a wavelength in the oscillatory wavelength region of semiconductor laser and responds quickly and is excellent in other electrophotographic characteristics and which consists an electroconductive support, a charge-generating layer and a charge-transfer layer, the two layers being placed on the support, and said charge-transfer layer containing a specific butadiene compound having formula (I); ##STR1## and a monophenol type antioxidant, the weight ratio of the monophenol type antioxidant/the butadiene compound ranging from 5/95 to 40/80.

    摘要翻译: 对半导体激光器的振荡波长区域的波长高度敏感的电子照相感光体,快速响应并且其它电子照相特性优异,并且由导电性支持体,电荷产生层和电荷转移层组成, 两层放置在载体上,所述电荷转移层含有具有式(I)的特定丁二烯化合物; (I)和单酚型抗氧化剂,单酚型抗氧化剂/丁二烯化合物的重量比为5/95至40/80。

    Diene compound and process for producing the same
    48.
    发明授权
    Diene compound and process for producing the same 失效
    二烯化合物及其制备方法

    公开(公告)号:US06323174B1

    公开(公告)日:2001-11-27

    申请号:US09571549

    申请日:2000-05-16

    IPC分类号: A61K746

    摘要: The invention provides a chain diene compound with desirable regioselectivity, in the presence of a specific ruthenium compound. This chain diene compound is a promising raw material for terpene. It has a structure represented by the general formula (I): wherein R1 represents H, a C1-C6 alkyl group which may be substituted or a C2-C6 alkenyl group which may be substituted, R2 represents a phenyl group which may have a C1-C4 alkyl group or a C1-C12 acyloxy group which may have a phenyl group or a naphthyl group, or a benzyl group or R2 is a hydroxy group which reversibly forms an aldehyde group through shifting of the position of the double bond adjacent to said hydroxy group. The chain diene compound is produced by reacting 2-substituted-1,3-butadienes with terminal olefins in the presence of a ruthenium compound in a hydrophilic solvent. Further, the above method provides an inexpensive process for preparing a mild fragrant component and a perfume composition, such as 4-methyl-5-hexen-1-al and 4-vinyl-8-methyl-7-nonenal.

    摘要翻译: 在特定的钌化合物的存在下,本发明提供具有理想的区域选择性的链二烯化合物。 该链二烯化合物是萜烯的有希望的原料。 它具有由通式(I)表示的结构:其中R1表示H,可被取代的C1-C6烷基或可被取代的C2-C6烯基,R2表示可具有C1 -C4烷基或可以具有苯基或萘基的C1-C12酰氧基或苄基,或R2是通过使所述双键邻近的所述双键移位而可逆地形成醛基的羟基 羟基。 链二烯化合物通过在亲水性溶剂中在钌化合物的存在下使2-取代-1,3-丁二烯与末端烯烃反应制备。 此外,上述方法提供了用于制备温和香料组分和香料组合物的廉价方法,例如4-甲基-5-己烯-1-醇和4-乙烯基-8-甲基-7-壬烯醛。

    Diene compound and process for producing the same
    49.
    发明授权
    Diene compound and process for producing the same 失效
    二烯化合物及其制备方法

    公开(公告)号:US06239324B1

    公开(公告)日:2001-05-29

    申请号:US09383920

    申请日:1999-08-26

    IPC分类号: C07C202

    摘要: The invention provides a chain diene compound with desirable regioselectivity, in the presence of a specific ruthenium compound. This chain diene compound is a promising raw material for terpene. It has a structure represented by the general formula (IX): wherein R1 represents H, a C1-C6 alkyl group which may be substituted or a C2-C6 alkenyl group which may be substituted, R2 represents a phenyl group which may have a C1-C4 alkyl group or a C1-C12 acyloxy group which may have a phenyl group or a naphthyl group, or a benzyl group or R2 is a hydroxy group which reversibly forms an aldehyde group through shifting of the position of the double bond adjacent to said hydroxy group. The chain diene compound is produced by reacting 2-substituted-1,3-butadienes with terminal olefins in the presence of a ruthenium compound in a hydrophilic solvent. Further, the above method provides an inexpensive process for preparing a mild fragrant component and a perfume composition, such as 4-methyl-5-hexen-1-al and 4-vinyl-8-methyl-7-nonenal.

    摘要翻译: 在特定的钌化合物的存在下,本发明提供具有理想的区域选择性的链二烯化合物。 该链二烯化合物是萜烯的有希望的原料。 其具有由通式(IX)表示的结构:其中R 1表示H,可被取代的C 1 -C 6烷基或可被取代的C 2 -C 6烯基,R 2表示可具有C 1 -C4烷基或可以具有苯基或萘基的C1-C12酰氧基或苄基,或R2是通过使所述双键邻近的所述双键的位置的移动可逆地形成醛基的羟基 羟基。 链二烯化合物通过在亲水性溶剂中在钌化合物的存在下使2-取代-1,3-丁二烯与末端烯烃反应制备。 此外,上述方法提供了用于制备温和香料组分和香料组合物的廉价方法,例如4-甲基-5-己烯-1-醇和4-乙烯基-8-甲基-7-壬烯醛。