Catalytic thiomethylation of N-substituted ureas and thioureas with N,N,N′,N′-tetramethylmethanediamine and α,ω-alkanedithiols

Abstract

An efficient procedure has been developed for the synthesis of N,N′-(2,5-dithiaalkane-α,ω-diyl)bis-(N′-allylthioureas) by thiomethylation of N-substituted ureas and thioureas with α,ω-alkanedithiols and N,N,N′,N′-tetramethylmethanediamine in the presence of cesium carbonate as catalyst.