Russian Journal of General Chemistry p. 1261 - 1265 (2006)
Update date:2022-08-28
Topics:
Zhilitskaya
Istomina
Yarosh
Voronkov
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. Nauka/Interperiodica 2006.
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