申请人:Tanaka Ken
公开号:US20080139822A1
公开(公告)日:2008-06-12
The invention provides a novel optically active biaryl phosphorus compound that can be produced easily without the step of optical resolution, which is almost indispensable step in a conventional method.
A phosphorus compound defined by the following general formula (1):
in the formula (1), R
1
denotes a hydrogen atom or a hydroxy protective group; R
2
denotes a group defined by the following formula (R
2
-1) or (R
2
-2); R
3
, R
4
, R
5
, and R
6
may be the same or different and independently denote a hydrogen atom, an alkyl group, an alkoxy group, an acyloxy group, a halogen atom, a haloalkyl group, or a dialkylamino group; two among R
3
, R
4
, R
5
, and R
6
may form an aromatic ring optionally having a substituent group, and two among R
3
, R
4
, R
5
, and R
6
may form a methylene chain optionally having a substituent group or a (poly)methylenedioxy group optionally having a substituent group:
in the formula (R
2
-1) and (R
2
-2), R
7
denotes an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, or an aryloxy group; R
8
and R
9
independently denote a hydrogen atom, an alkyl group, or an aryl group; z denotes a divalent group; and a denotes an integer of 0 or 1.
该发明提供了一种新型的具有光学活性的联苯磷化合物,可以在不需要光学分辨步骤的情况下轻松制备,而在传统方法中几乎是不可或缺的步骤。由下述一般式(1)定义的磷化合物:在式(1)中,R1表示氢原子或羟基保护基;R2表示由下述式(R2-1)或(R2-2)定义的基团;R3、R4、R5和R6可以相同或不同且独立地表示氢原子、烷基基团、烷氧基团、酰氧基团、卤原子、卤代烷基基团或二烷基氨基基团;R3、R4、R5和R6中的两个可以形成具有取代基的芳香环,R3、R4、R5和R6中的两个可以形成具有取代基的亚甲基链或具有取代基的(聚)亚甲氧基链;在式(R2-1)和(R2-2)中,R7表示烷基基团、环烷基基团、芳基基团、烷氧基团或芳氧基团;R8和R9独立地表示氢原子、烷基基团或芳基基团;z表示二价基团;a表示0或1的整数。