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    Process for asymmetric intramolecular [3+2] cyclo-addition of hydrazones
    6.
    发明授权
    Process for asymmetric intramolecular [3+2] cyclo-addition of hydrazones 有权
    腙的不对称分子内[3 + 2]环加成方法

    公开(公告)号：US07351831B2

    公开(公告)日：2008-04-01

    申请号：US10507309

    申请日：2003-03-11

    申请人： Shu Kobayashi ,  Yasuhiro Yamashita ,  Haruro Ishitani

    发明人： Shu Kobayashi ,  Yasuhiro Yamashita ,  Haruro Ishitani

    IPC分类号： C07D471/04

    CPC分类号： C07D231/56

    摘要： An intramolecular [3+2] cycloaddition reaction of a hydrazone is carried out under a mild condition with a high stereoselectivity and yield by reacting a hydrazone derivative in the presence of an asymmetric catalyst system obtained by mixing a zirconium alkoxide represented by the following formula (I): Zr(OR)4   (I) (wherein R is a hydrocarbon group which may have a substituent) with a binaphthol derivative represented by the following formula (II): (wherein Y1 and Y2 are each identical or different and denote a hydrogen atom or a halogen atom, and at least one of Y1 and Y2 denotes a halogen atom).

    摘要翻译： 腙的分子内[3 + 2]环加成反应在具有高立体选择性的温和条件下进行，并且通过使腙衍生物在由下式表示的锆烷氧化物 I）：<？in-line-formula description =“In-line Formulas”end =“lead”？> Zr（OR）4（I）<？in-line-formula description =“ （其中R是可以具有取代基的烃基）与下式（II）表示的联萘酚衍生物：（其中Y 1和X 2） Y 2各自相同或不同，表示氢原子或卤素原子，Y 1和Y 2中的至少一个表示一个 卤素原子）。

    Process for asymmetric intramolecular [3+2] cyclo-addition of hydrazones
    7.
    发明申请
    Process for asymmetric intramolecular [3+2] cyclo-addition of hydrazones 有权
    腙的不对称分子内[3 + 2]环加成方法

    公开(公告)号：US20050165237A1

    公开(公告)日：2005-07-28

    申请号：US10507309

    申请日：2003-03-11

    申请人： Shu Kobayashi ,  Yasuhiro Yamashita ,  Haruro Ishitani

    发明人： Shu Kobayashi ,  Yasuhiro Yamashita ,  Haruro Ishitani

    IPC分类号： C07D231/56 ,  C07F7/28 ,  C07D471/02

    CPC分类号： C07D231/56

    摘要： An intramolecular [3+2] cycloaddition reaction of a hydrazone is carried out under a mild condition with a high stereoselectivity and yield by reacting a hydrazone derivative in the presence of an asymmetric catalyst system obtained by mixing a zirconium alkoxide represented by the following formula (I): Zr(OR)4   (I) (wherein R is a hydrocarbon group which may have a substituent) with a binaphthol derivative represented by the following formula (II): (wherein Y1 and Y2 are each identical or different and denote a hydrogen atom or a halogen atom, and at least one of Y1 and Y2 denotes a halogen atom).

    摘要翻译： 腙的分子内[3 + 2]环加成反应在具有高立体选择性的温和条件下进行，并且通过使腙衍生物在由下式表示的锆烷氧化物 I）：<？in-line-formula description =“In-line Formulas”end =“lead”？> Zr（OR）4（I）<？in-line-formula description =“ （其中R是可以具有取代基的烃基）与下式（II）表示的联萘酚衍生物：（其中Y 1和X 2） Y 2各自相同或不同，表示氢原子或卤素原子，Y 1和Y 2中的至少一个表示一个 卤素原子）。