One‐Step Synthesis of Diphenylmethanes

Abstract

The coupling reaction of substituted toluenes themselves and the cross‐coupling reaction of substituted toluene and aromatic in the presence of bromine in anhydrous CCl₄ under irradiation lead to diphenylmethanes with moderate to good yields. The methylene moiety in diphenylmethanes comes from the toluene with fewer electron‐donating groups, and regioselectivity was observed.

Keywords:

• Diphenylmethane
• coupling reaction