Preparation method of 4-tert-butyl-2-(alpha-methylbenzyl) phenol

The invention discloses a preparation method of 4-tert-butyl-2-(alpha-methylbenzyl) phenol, and relates to the technical field of organic synthesis. 4-tert-butylphenol and styrene are used as reaction raw materials, and a liquid coordination complex is simultaneously used as a catalyst and a solvent to carry out a one-pot reaction. By selecting different types of organic ligands, metal halides and liquid coordination complexes with the proportions of the organic ligands to the halides, the synthesis process steps are simplified, and the limitation of volatile solvents on the reaction temperature in the reaction process is avoided. The reaction period is greatly shortened, high product yield and purity can be achieved, the reaction rate is increased, the problem of solvent residue is avoided, a large amount of acid wastewater is not generated in the reaction process, the product after the reaction and the solvent used in the post-treatment process of the liquid coordination complex can be recycled, and the met