A method of preparing an asymmetric biphenyl

The present invention discloses a method for preparing an asymmetric biphenyl, and more particularly refers to a palladium catalyzed method for aromatic amines "pot" preparation of asymmetric biphenyl. Characterized by comprising the steps of: using water as solvent, under the action of palladium acetate was added ether aryl silicon diazotized solution, without any ligand, without the protection of inert gas, to obtain an asymmetric biphenyl ; simple reaction conditions of the present invention, short reaction time, the reaction yield.