申请人:Tanaka Ken
公开号:US20090227805A1
公开(公告)日:2009-09-10
Problem to be Solved: To provide an axially asymmetric optically active biarylphosphorus compound that can easily produced without the step of optical resolution which was almost indispensable in conventional methods.
Solution: A method for producing an axially asymmetric phosphorus compound represented by the general formula (1), comprising a cycloaddition reaction of a compound having a triple bond with the use of a catalyst containing rhodium metal and an optically active bisphosphine.
(In the formula, J is an oxygen atom, a sulfur atom or BH
3
; R
1
and R
2
independently are an alkyl, cycloalkyl, aryl, alkoxy and aryloxy group; a1 and a2 independently are 0 or 1; R
3
to R
10
independently are an alkyl, cycloalkyl, aryl, alkoxy and aryloxy group; two among R
3
to R
10
may form a ring;
and * is axial asymmetry.)
要解决的问题:提供一种轴向不对称的光学活性联苯磷化合物,可以在传统方法中几乎不可或缺的光学分辨步骤之外轻松生产。
解决方案:一种生产由通式(1)表示的轴向不对称磷化合物的方法,包括使用含有铑金属和光学活性双膦的催化剂进行含有三键化合物的环加成反应。
(在公式中,J是氧原子、硫原子或BH3;R1和R2独立地是烷基、环烷基、芳基、烷氧基和芳氧基;a1和a2独立地为0或1;R3到R10独立地是烷基、环烷基、芳基、烷氧基和芳氧基;R3到R10中的两个可能形成环;*表示轴向不对称。)