Reaction of Tellurium with 2,3-Dichloro-1-propene in the System Hydrazine Hydrate-Alkali.A Novel Approach to Synthesis of Allene

摘要

Allene is widely used in organic synthesis[1,2].In laboratory or on small-scale chemical plants it is usualy prepared by the action of zinc on 2,3-dibromo-1-propene in alcohol solution[1,3].Large specific consumption of zinc irretrievably lost in the process produces a vast amount of highly toxic waste waters.Besides,the formation of substantial amounts of 2-bromopropene and propylene is observed in this method.