Preparation method of cyclic aromatic compound containing quaternary carbon center

The invention belongs to the field of organic synthesis, and particularly relates to a preparation method of a cyclic aromatic compound containing a quaternary carbon center, which comprises the following steps: by taking a biphenyl compound and a ketone compound as reactants, carrying out one-step reaction in a liquid phase system containing a catalyst to obtain a crude product; and purifying to obtain the cyclic aromatic compound containing the quaternary carbon center. The catalyst comprises a perfluoroalkyl sulfonyl imide compound. Compared with the prior art, the problems that in the prior art, the product yield is low, the reaction temperature is high, and the application range is narrow are solved; according to the scheme, the perfluoroalkyl sulfonimide compound is used as a catalyst, so that the product yield is higher, the applicable substrate range is wider, the reaction conditions are simpler and milder, and a universal synthesis method for synthesizing the cyclic aromatic compound containing the q