申请人:Kyowa Pharma Chemical Co., Ltd.
公开号:EP3950672A1
公开(公告)日:2022-02-09
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, Ar1 is an aryl group, each Ar2 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 C1-3 alkoxyphenyl group, L is one of carbon atoms constituting the phenyl group or the C1-3 alkoxyphenyl group.
本发明提供了一种生产式(1a)、(1b)或(1c)所代表的化合物的方法,包括在氢气氛下,在式(5)所代表的金属络合物、无机碱和溶剂的存在下还原式(3)所代表的化合物以得到式(4)所代表的化合物的步骤。式中,Ar1 是芳基,每个 Ar2 独立地是苯基或类似基团,W 是联苯基或类似基团,Z 是被苯基或类似基团取代的乙烯基,L 是氯原子,如果 Z 具有苯基或 C1-3 烷氧基苯基,则 L 是构成苯基或 C1-3 烷氧基苯基的碳原子之一。