Реферат: 1. It was shown that vinylethynyimagnesium halide condenses in high yield with both trialkyl halogen silanes and with aryldialkyl-halogenosilanes, monoalkyl-halogenosilanes, and even withsilicon tetrachloride. 2. All the vinylethynykilanes, and with particular ease divinylethynylsilanes, polymerize spontaneously on standing in the air to form transparent, peroxide-containing resins. Vinylethynylsilanes are capable, however, of polymerizing even in absence of air when heated in sealed tubes to 100°. 3. The velocities of polymerization of the vinylethynylsilanes were correlated with their structure, In the trialkylvinylethynylsilanes the rate of polymerization rises with increasing length of radical from methyl through butyl, In the dimethyiarylsilane series it falls from phenyl to benzyl acid from α-naphthyl to p-tolyl, 4. Selective hydrogenation of triethylvinylethynylsilane gave triethylbutadienylsilane and triethylbuten-2 silane. 5. In the bromination of vinylethynylsilanes the first two atoms of bromine add on at the triple bond, lending to polymerizable derivatives of the butadiene type. HCl at −70° also adds on but in the proportion of two molecules, forming a dichloride structurally analogous to that obtained by addition of 2 moles HC1 to 1-buten-3-yne. 6. In contrast to hydrogen, bromine and hydrogen halides, which first add on at the triple bond, alkyllithiums only add on at the double bond of the enyne grouping. The resultant alkynyllithiums can be hydrolyzed by water or alkylated by alkyl halides to form silicohydrocarbons of the acetylenic series; their alkylation with trialkylhalogenosilanes gives unsymmetrical acetylenic disilanes, Diacetylenic disilanes are got from the alkynyllithium (via addition of butyllithium).

Библиографическая ссылка: Petrov A.D. , Sadykhzade S.I. , Egorov Y.P.
Synthesis and physical and chemical properties of vinylethynylsilanes
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 1954. V.3. N4. P.621-629. DOI: 10.1007/bf01172709 OpenAlex

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