The invention relates to a
ruthenium complex containing a carboranyl
benzimidazole structure as well as a preparation method and application of the
ruthenium complex. The preparation method of the
ruthenium complex comprises the following steps: 1) adding a n-BuLi solution into a
carborane solution, and performing a reaction at
room temperature for 30-60 min; 2) adding bromobenzimidazole, and performing a reaction at
room temperature for 6-8 h; and 3) adding [(p-cymene)RuCl2]2, performing a reaction at
room temperature for 3-5 h, and performing
post treatment to obtain the ruthenium complex. The ruthenium complex is used to catalyze self-oxidative
coupling of primary amines to prepare
imine compounds. Compared with the prior art, the method provided by the invention uses the dinuclear ruthenium compound [(p-cymene)RuCl2]2 as a
raw material, and the [(p-cymene)RuCl2]2 is reacted with the n-BuLi and o-carbonboryl
benzimidazole to obtain the bivalent half-sandwich ruthenium complex containing the o-carbonboryl
benzimidazole structure; and the ruthenium complex provided by the invention has stable physicochemical properties and
thermal stability, is still stable at high temperature of300 DEG C, has a simple and green synthetic process, and exhibits excellent activity in the reaction of catalyzing the self-oxidative
coupling of primary amines to prepare the
imine compounds.