Effect of the Chalcogen Nature on the Reaction of Propane-l,3-dichalcogenolates with 2,3-Dichloroprop-1-ene

摘要

The direction of the reaction of propane-1,3-dichalcogenolates with 2,3-dichloroprop-1-ene in the system hydrazine hydrate-KOH depends not only on the conditions but to a greater extent on the chalcogen nature. Dipotassium propane-l,3-dithiolate and propane- 1,3-diselenolate give rise to products of substitution of the chlorine atom on the sp~3-carbon atom, which are capable of undergoing further transformations (domino reaction). Dipotassium propane-1,3-ditellurolate promotes elimination of both chlorine atoms with formation of allene.