An object of the present invention is to provide a method for directly performing arylation (particularly α-arylation) of carbonyl or thiocarbonyl compounds using a more inexpensive phenol derivative and nickel catalyst. Another object of the present invention is to provide a novel nickel catalyst that can be used in this method, and a novel ligand of the nickel catalyst. The novel compounds of the present invention are a compound having a diphosphine skeleton in which a five- or six-membered heterocyclic ring is substituted with two dialkylphosphines and/or dicycloalkylphosphines, or a salt thereof, and a compound having the diphosphine skeleton that is bound to nickel. Moreover, coupling reaction of a carbonyl compound and a phenol derivative can be advanced in the presence of a nickel compound having a monodentate or bidentate dialkylphosphine and/or dicycloalkylphosphine skeleton.
本发明的一个目的是提供一种使用更便宜的
酚衍
生物和
镍催化剂直接进行羟基化(尤其是α-羟基化)的醛或
硫醛化合物的方法。本发明的另一个目的是提供一种可以用于该方法的新型
镍催化剂,以及
镍催化剂的新型
配体。本发明的新化合物是一种含有
二膦骨架的化合物,其中五元或六元杂环环被两个二烷基膦和/或二环烷基膦取代,或其盐,以及与
镍结合的具有
二膦骨架的化合物。此外,在存在具有一膦或
二膦二烷基膦和/或二环烷基膦骨架的
镍化合物的情况下,可以促进醛化合物和
酚衍
生物的偶联反应。