Palladium-catalysed hydrosulfination: synthesis of sulfonic acids and S-alkyl alkanethiosulfonates from alkenes, sulfur dioxide and hydrogen
Abstract
S-Alkyl alkanethiosulfonates and sulfonic acids can easily be synthesized from sulfur dioxide, alkenes, hydrogen and a cationic palladium(II)-diphosphine complex like [Pd(dppp)(MeCN)2][X]21[X = non or weakly coordinating anion; dppp = 1,3-bis(diphenylphosphino)propane], at temperatures above the ceiling temperature of the SO2–alkene copolymer.