Catalytic desulfitative homocoupling of sodium arylsulfinates in water using PdCl2 as the recyclable catalyst and O2 as the terminal oxidant

Abstract

A green and convenient approach to symmetrical biaryls has been developed. The catalytic desulfitative homocoupling of various inexpensive and readily available sodium arylsulfinates in environment-friendly solvent, water, and under clean oxidant, molecular O₂, afforded symmetrical biaryls in good yields. What's more, water can hold the noble catalyst PdCl₂ for recycling several times easily, and facilitate separating insoluble organic product.