申请人:KYOWA PHARMA CHEMICAL CO., LTD.
公开号:US20220169600A1
公开(公告)日:2022-06-02
The present invention provides a method for producing a compound represented by Formula (1a), (1b), or (1c), comprising a step of reducing a compound represented by Formula (3) in the presence of a metal complex represented by Formula (5), an inorganic base, and a solvent under a hydrogen atmosphere to obtain a compound represented by Formula (4). In the formula, Ar
1
is an aryl group, each Are is independently a phenyl group or the like, W is a biphenyl group or the like, Z is an ethylene group that is substituted with a phenyl group or the like, and L is a chlorine atom or if Z has a phenyl group or a C
1-3
alkoxyphenyl group, L is one of carbon atoms constituting the phenyl group or the C
1-3
alkoxyphenyl group.
本发明提供了一种制备由公式(1a),(1b)或(1c)表示的化合物的方法,包括在氢气气氛下,在公式(5)表示的金属配合物,无机碱和溶剂的存在下,还原由公式(3)表示的化合物以获得由公式(4)表示的化合物。在该式中,Ar1是芳基基团,每个Are独立地是苯基或类似的基团,W是联苯基团或类似的基团,Z是被苯基或类似基团取代的乙烯基团,如果Z具有苯基或C1-3烷氧基苯基基团,则L是构成苯基或C1-3烷氧基苯基基团的碳原子之一。