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    TITANIUM COMPOUND AND PROCESS FOR ASYMMETRIC CYANATION OF IMINES
    3.
    发明申请
    TITANIUM COMPOUND AND PROCESS FOR ASYMMETRIC CYANATION OF IMINES 审中-公开
    钛化合物和不对称化合物的方法

    公开(公告)号：US20100249443A1

    公开(公告)日：2010-09-30

    申请号：US12679252

    申请日：2008-09-26

    申请人： Abdul Majeed Seayad ,  Balamurugan Ramalingam ,  Christina Chai ,  Takushi Nagata ,  Kazuhiko Yoshinaga

    发明人： Abdul Majeed Seayad ,  Balamurugan Ramalingam ,  Christina Chai ,  Takushi Nagata ,  Kazuhiko Yoshinaga

    IPC分类号： C07F7/28 ,  C07C253/08 ,  C07C253/30

    CPC分类号： C07C253/30 ,  C07B41/02 ,  C07B43/08 ,  C07B53/00 ,  C07C255/19

    摘要： The present invention relates to titanium catalysts for asymmetric synthesis reactions produced by bringing a reaction mixture obtained by contacting water and a titanium alkoxide into contact with an optically active ligand represented by the general formula (a), wherein R1, R2, R3, and R4 are independently a hydrogen atom, an alkyl group, or the like, and A* represents a group with two or more carbon atoms having an asymmetric carbon atom or axial asymmetry. The invention further relates to a process for asymmetric cyanation of imines, wherein the process comprises reacting an imine with a cyanating agent in the presence of the titanium catalyst.

    摘要翻译： 本发明涉及通过使水与钛醇盐接触而得到的反应混合物与通式（a）表示的光学活性配体接触而制备的不对称合成反应的钛催化剂，其中R1，R2，R3和R4 独立地为氢原子，烷基等，A *表示具有2个以上具有不对称碳原子或轴向不对称性的碳原子的基团。 本发明还涉及亚胺不对称氰化方法，其中该方法包括在钛催化剂存在下使亚胺与氰化剂反应。

    Titanium compound and process for producing optically active cyanohydrins
    7.
    发明授权
    Titanium compound and process for producing optically active cyanohydrins 有权
    钛化合物和制备光学活性氰醇的方法

    公开(公告)号：US07732544B2

    公开(公告)日：2010-06-08

    申请号：US11665346

    申请日：2005-10-06

    申请人： Kazuhiko Yoshinaga ,  Takushi Nagata ,  Satoru Miyazoe

    发明人： Kazuhiko Yoshinaga ,  Takushi Nagata ,  Satoru Miyazoe

    IPC分类号： C08F2/22

    CPC分类号： B01J31/2243 ,  B01J31/2226 ,  B01J2231/343 ,  B01J2531/0258 ,  B01J2531/0266 ,  B01J2531/46 ,  C07F7/003 ,  Y10S524/923

    摘要： The present invention relates to a titanium compound produced from a reaction mixture of a titanium tetraalkoxide compound with water and an optically active ligand represented by the following general formula (1), or a titanium oxoalkoxide compound and an optically active ligand represented by the following general formula (1), wherein, in the formula, R2, R3 and R4 independently represent a hydrogen atom, an alkyl group or the like, and A* represents a hydrocarbon-containing group with three or more carbon atoms having an asymmetric carbon atom or axial asymmetry. The invention further relates to a process for producing optically active cyanohydrins which is characterized by reacting a carbonyl compound with a cyanating agent in the presence of such a titanium compound.

    摘要翻译： 本发明涉及由四烷氧基钛化合物与水的反应混合物和由以下通式（1）表示的光学活性配位体制得的钛化合物或由以下通式表示的光学活性配位体 式（1）其中，式中，R 2，R 3和R 4分别表示氢原子，烷基等，A *表示具有3个以上具有不对称碳原子的碳原子的含烃基团， 轴向不对称。 本发明还涉及一种制备光学活性氰醇的方法，其特征在于在这种钛化合物的存在下使羰基化合物与氰化剂反应。

    Titanium Compound and Process for Producing Optically Active Cyanohydrins
    8.
    发明申请
    Titanium Compound and Process for Producing Optically Active Cyanohydrins 有权
    钛化合物和制备光活性氰基醇的方法

    公开(公告)号：US20070265463A1

    公开(公告)日：2007-11-15

    申请号：US11665346

    申请日：2005-10-06

    申请人： Kazuhiko Yoshinaga ,  Takushi Nagata ,  Satoru Miyazoe

    发明人： Kazuhiko Yoshinaga ,  Takushi Nagata ,  Satoru Miyazoe

    IPC分类号： C07C255/00

    CPC分类号： B01J31/2243 ,  B01J31/2226 ,  B01J2231/343 ,  B01J2531/0258 ,  B01J2531/0266 ,  B01J2531/46 ,  C07F7/003 ,  Y10S524/923

    摘要： The present invention relates to a titanium compound produced from a reaction mixture of a titanium tetraalkoxide compound with water and an optically active ligand represented by the following general formula (1), or a titanium oxoalkoxide compound and an optically active ligand represented by the following general formula (1), wherein, in the formula, R2, R3 and R4 independently represent a hydrogen atom, an alkyl group or the like, and A* represents a hydrocarbon-containing group with three or more carbon atoms having an asymmetric carbon atom or axial asymmetry. The invention further relates to a process for producing optically active cyanohydrins which is characterized by reacting a carbonyl compound with a cyanating agent in the presence of such a titanium compound.

    摘要翻译： 本发明涉及由四烷氧基钛化合物与水的反应混合物和由以下通式（1）表示的光学活性配位体制得的钛化合物或由以下通式表示的光学活性配位体 式（1）其中，在该式中，R 2，R 3和R 4独立地表示氢原子，烷基或 A *表示具有三个以上具有不对称碳原子或轴对称性的碳原子的含烃基团。 本发明还涉及一种制备光学活性氰醇的方法，其特征在于在这种钛化合物的存在下使羰基化合物与氰化剂反应。