Zinc-Thiourea-Diphenyl Ether. a new Reagent for the Debromination of Vic-Dibromides

Abstract

Zinc with a trace of zinc chloride in methanol, ethanol, dioxane or diethyl ether is one of the most common dehalogenating agents^1–4. However, the use of such low boiling solvents causes difficulties when the dehalogenated products have boiling points similar to these solvents, when they form azeotropic mixtures with the solvents or when the products tend to polymerize in the reaction mixture and it is desirable to remove them as formed.