The reaction of N-dichloromethylene-N,N-dimethylammonium chloride (Viehe's salt) with thiophenols and phenols: a synthesis of unsymmetrical diaryl carbonates

Abstract

The reaction of N-dichloromethylene-N,N-dimethylammonium chloride (Viehe's salt) with various thiophenols and phenols is reported. The resulting intermediate salts are generally transformed by water or sodium hydrogen sulfide to thiocarbonates and thiocarbamates. An efficient synthesis of unsymmetrical diaryl carbonates is discussed.