Chalcogenation of 1,3-dichloropropene with elemental chalcogens in the system hydrazine hydrate–base
Sulfur reacts with 1,3-dichloropropene in the system hydrazine hydrate–KOH to form bis(1-chloroprop-1-en-3-yl) sulfide, and in the system hydrazine hydrate–monoethanolamine, bis(1-chloroprop-1-en- 3-yl) disulfide. The reaction of tellurium in the system hydrazine hydrate–KOH leads to diallyl telluride, the product of nucleophilic substitution of the allylic chlorine atom and reductive cleavage of the Сsp2–Cl bond. The reaction of selenium with 1,3-dichloropropene gives a complex mixture of products. At excess KOH (Se: KOH = 1: 5) bis(1-chloroprop-1-en-3-yl) selenide was isolated.
The new compound diallyl telluride and other diorgano telluride compounds are prepared from alkali metal tellurides obtained by an efficient reaction between an alkali metal and tellurium in a naphthalene/tetrahydrofuran solution. The alkali metal telluride then reacts with an organo halide to form the final product which is easily isolated by filtration followed by vacuum distillation.
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(2008/06/13)
Allyltellurides and their use in the MOCVD growth of group II-VI epitaxial films
Methyl allyltelluride is described for use in a process for depositing group II-VI epitaxial films in semiconductor manufacture. The films are grown on crys-talline substrates in a MOCVD reactor.
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(2008/06/13)
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