Alkylalkoxypolysiloxanes. IX. Methylethoxypolysiloxanes Containing the Trimethylsiloxy Group
作者:Minoru Sakiyama、Rokuro Okawara
DOI:10.1246/bcsj.33.1645
日期:1960.12
(1) Methylethoxypolysiloxanes containing the trimethylsiloxy group have been prepared.(2) The infrared spectra of these compounds are discussed.
(1) 已制备含有三甲基硅氧基团的甲基乙氧基聚硅氧烷。(2) 讨论了这些化合物的红外光谱。
Treatment of Tetraalkoxysilanes with Amberlyst 15 Cation-Exchange Resin in Presence of Hexamethyldisiloxane
作者:Isao Hasegawa、Sumio Sakka
DOI:10.1246/bcsj.60.4313
日期:1987.12
Tetraalkoxysilanes were treated with Amberlyst 15 cation-exchange resin in hexamethyldisiloxane at 40 °C in order to substitute the trimethylsilyl group for the alkyl group in a tetraalkoxysilane partially. Tetramethoxy-, ethoxy-, propoxy-, and butoxysilanes were used for the experiments. After the treatment, SiO4R4−nXn(1≤n≤4, R=CH3, C2H5, n-C3H7, and n-C4H9, X=Si(CH3)3) were detected by gas chromatography and were identified by combined gas chromatography-mass spectrometry. The degree of trimethylsilylation of tetraalkoxysilane changed with the molar ratio of hexamethyldisiloxane to tetraalkoxysilane and quantities of the reaction products in the system depended mainly on the ratio.
Reaction of tetraethoxysilane with the azeotropic mixture Me3SiCl-SiCl4 in the presence of certain cyclic (tetrahydrofuran, dioxane) and acyclic (diethyl ether) ethers, ethanol, or dimethylformamide was studied with the aim of SiMe3Cl recovery.
Reaction of trimethyliodosilane with tetraalkoxysilanes and hexaalkoxydisiloxanes
作者:M. G. Voronkov、S. F. Pavlov、�. I. Dubinskaya
DOI:10.1007/bf00927482
日期:1975.3
Monosodiumoxyorganoalkoxysilanes: Synthesis and properties
作者:E. A. Rebrov、A. M. Muzafarov
DOI:10.1002/hc.20280
日期:——
leads to the formation of both monosodiumoxyorganoalkoxysilanes (MSOAS) and several secondary products. Analysis of experimental evidence makes it possible to advance the mechanism behind this phenomenon and to define the optimum conditions for the preparation of pure MSOAS with high yields. Different MSOAS were synthesized and their basic physicochemical properties were studied. MSOAS are shown to