Reactions of 2,3-dichloro-1-propene with sulfur and tellurium in the system hydrazine hydrate-KOH
作者:E. P. Levanova、V. A. Grabel’nykh、N. V. Russavskaya、L. V. Klyba、E. R. Zhanchipova、A. I. Albanov、O. A. Tarasova、N. A. Korchevin
DOI:10.1134/s1070363209060103
日期:2009.6
2,3-Dichloro-1-propene reacts with sulfur dissolved in the system hydrazine hydrate-KOH (with formation of K2S2 or K2S) to afford bis(2-chloro-1-propene-3-yl)sulfide as the main product in both cases. Under similar conditions tellurium induces beta-elimination of both chlorine atoms resulting in the formation of allene and complete regeneration of tellurium metal.
Reaction of diphenyl ditelluride with 2,3-dichloroprop-1-ene in the system hydrazine hydrate-KOH
作者:E. P. Levanova、V. S. Vakhrina、V. A. Grabel’nykh、I. B. Rozentsveig、N. V. Russavskaya、A. I. Albanov、N. A. Korchevin
DOI:10.1134/s1070428014020055
日期:2014.2
Diphenyl ditelluride reacts with 2,3-dichloroprop-1-ene in the system hydrazine hydrate-KOH along several parallel routes. Beside the nucleophilic chlorine substitution at the sp (3)-hybridized carbon atom resulting in 2-chloro-3-phenyltellanylprop-1-ene the elimination of both chlorine atoms occurs affording a mixture of allene and methylacetylene. The reasons of the dual elimination reaction paths are considered.