申请人:Takasago International Corporation
公开号:EP1318155A1
公开(公告)日:2003-06-11
A novel phosphine compound having excellent properties (chemical selectivity, enantioselectivity, catalytic activity) as a catalyst for asymmetric syntheses, especially asymmetric hydrogenation. A phosphine-phosphorane compound represented by the following general formula:
(wherein R1 represents hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, R2, R3, R4, and R5 are the same or different, and each represents hydrogen atom, or an alkyl group having 1 to 6 carbon atoms, etc., and each of R2 and R3, R3 and R4, and R4 and R5 may be together combined to form a ring which may contain one or more (preferably 1 to 2) oxygen atoms, and R6 and R7 are the same or different, and each represents a linear or branched alkyl group having 1 to 6 carbon atoms, etc.).
一种新型膦化合物,作为不对称合成,特别是不对称氢化的催化剂,具有优异的性能(化学选择性、对映选择性、催化活性)。由以下通式表示的膦-膦化合物:
(其中 R1 代表氢原子或具有 1 至 4 个碳原子的直链或支链烷基,R2、R3、R4 和 R5 相同或不同,各自代表氢原子或具有 1 至 6 个碳原子的烷基等,R2 和 R3、R3 和 R4 以及 R4 和 R5 可共同组合成一个环,该环可含有一个或多个(最好是 1 至 2 个)氧原子,R6 和 R7 相同或不同,各自代表具有 1 至 6 个碳原子的直链或支链烷基等)。