Abstract Reactions of 1, 2-dihaloethanes with chalcogenide anions generated from elemental chalcogens and dimethylchalcogens were performed in the hydrazine hydrate- KOH system. The use of anions Se x 2− and Te x 2−(x= 1− 4) resulted in ethylene evolution and chalcogen regeneration (or in increased x value in an anion). Oligomers of Thiokol type formed only in the reaction of the 1, 2-dichloroethane with a mixture of potassium disulfide ...
