A mechanism of the hydrogenation of the double bond in the synthesis of allyl chalcogenides in the hydrazine hydrate - Potassium hydroxide system

Article abstract of DOI:10.1007/BF02495714

Allyl halides react with elemental selenium in the N₂H₄ · H₂O-KOH system to give diallyl chalcogenides and allyl propyl chalcogenides. The latter form only in the presence of oxygen when unsaturated intermediates CH₂=CHCH₂YK (Y = S and Se), which are soluble in hydrazine hydrate, are hydrogenated with diimide.