Fig. 6: Relevant reactions and pathways for the elucidation of the homocoupling mechanism.
From: Synthesis of highly substituted alkenes by sulfur-mediated olefination of N-tosylhydrazones
a Reactions of isocyanides A and N-heterocyclic carbenes C with elemental sulfur under formation of C = S double bonds. b Pathway of the Barton-Kellogg reaction of a diazo compound E with a thioketone F, yielding an alkene J after thiirane I desulfurization with triphenylphosphine. c Desulfurization of 2,2,3-triphenylthiirane L into 1,1,2-triphenylethylene M catalyzed by thiophenolate K.
