Alkynyl vinyl sulfides are prepared in good yield by reaction of lithium acetylides with the unsaturated sulfenamides 4 which in turn are easily synthesized by addition of phthalimidosulfenyl chloride to alkynes. In all cases the reaction occurs without effecting the stereochemistry of the double bond.
Comparison between the mass spectrometric behaviour and condensed-phase reactivity of products of addition of phthalimidesulphenyl chloride to aryl acetylenes
AbstractThe electron impact‐induced mass spectrometric behaviour of six products of the addition of phthalimidesulphenyl chloride to aryl acetylenes was studied with the aid of daughter ion spectroscopy. The electron impact‐induced decomposition processes parallel those observed in the condensed phase. In particular for the diaryl adducts the formation of 3‐chlorobenzothiophene derivatives results in a highly favoured process under the two sets of operating conditions.
Phthalimidosulphenyl chloride: A synthetic equivalent of inaccessible sulphenyl chlorides