New polyunsaturated organosilicon dendrimers based on 1,1-diethynyl-and 1-vinyl-1-ethynylsilacycloalkanes

Autor:	M. G. Voronkov, Larisa V. Zhilitskaya, O. G. Yarosh, E. E. Istomina
Rok vydání:	2006
Předmět:	Magnesium chemistry.chemical_element General Chemistry NMR spectra database chemistry.chemical_compound chemistry Acetylene Ethylmagnesium bromide Bromide General chemistry Dendrimer Polymer chemistry Organic chemistry Organosilicon
Zdroj:	Russian Journal of General Chemistry. 76:1261-1265
ISSN:	1608-3350 1070-3632
DOI:	10.1134/s1070363206080172
Popis:	1,1-Dichloro-and 1-vinyl-1-chlorosilacyclanes were prepared by reactions of tetrachlorosilane or vinyltrichlorosilane with magnesium and 1,4-dibromobutane or 1,5-dibromopentane. The reactions of the products obtained with ethynylmagnesium bromide or bis(bromomagnesio)acetylene yield the corresponding ethynylsilacyclanes. Condensation of 1,1-diethynylsilacyclanes or bis(ethynylsilacyclopentyl)ethyne with an equimolar amount of ethylmagnesium bromide and methylbis(trimethylsilylethynyl)fluorosilane gave the corresponding highly unsaturated mono-and binuclear first-generation dendrimers with the cores formed by the silicon atoms incorporated in silacycloalkane fragments. The 1H, 13C, and 29Si NMR spectra of all the compounds obtained were studied. The key parameters and the chemical graph of the new dendrimers are presented.
Databáze:	OpenAIRE
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