Reaction of 1,1-dichloroethane with tellurium in the system hydrazine hydrate-potassium hydroxide
The reaction of 1,1-dichloroethane with tellurium in the system hydrazine hydrate-potassium hydroxide gave ethyltellanyl derivatives as a result of replacement of one chlorine atom in the substrate by tellurium, and of the other, by hydrogen. Probable mechanisms of reduction of the C-Cl bond and mass spectra of the products were considered. The mass spectra of ditelluroacetals revealed unusual rearrangement of the molecular ion, leading to the formation of Te-Te and new C-C bond.
Reaction of tellurium with dichloromethane in the system hydrazine hydrate-alkali
Tellurium reacts with dichloromethane in the system hydrazine hydrate-alkali substituting one chlorine atom by tellurium whereas the second chlorine atom undergoes reductive substitution by hydrogen leading to the formation of methyltellanyl derivatives.
Reaction of Mono- and Dihaloalkanes with Mixed Solutions of Chalcogens in Alkaline Reductive Systems
Sufur-selenium, sulfur-tellurium, selenium-tellurium, and sulfur-selenium-tellurium mixtures readily dissolve in the hydrazine hydrate-alkali system to form chalcogenide anions. Alkylation of the latter with ethyl bromide results in preferential formation
Deryagina,Grabel'nykh,Mamaseva
p. 711 - 714
(2007/10/03)
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