trans-6-Chloro-4-decne (4), 3-chloro-l-heptene (7), and trans-l-chloro-2-heptene (9) are converted quantitatively into allylic methyl sulfides upon treatment with a molar equivalent of methyltin tris (methanethio1ate) at 70 OC in benzene-dichloromethane. Unlike the reactions of sodium thiolates with straight chain allylic chlorides, these nucleophilic displacements are accompanied by very significant amounts of allylic rearrangement, with the yields of ...