5926-26-1Relevant articles and documents
Trialkoxysilanes connected with thioether bond on alpha-carbon and containing different functional groups based on sulfydryl-ene click reaction, and preparation
-
Paragraph 0109-0111, (2019/01/14)
The invention relates to a preparation method of trialkoxysilanes connected with a thioether bond on alpha-carbon and containing different functional groups. The method comprises the steps of reactingchloromethyltrichlorosilane and sodium alkoxide so as to prepare chloromethyltriethoxysilane, then reacting chloromethyltriethoxysilane and thiourea under the action of a catalyst so as to prepare alpha-sulfydrylmethyltriethoxysilane; through performing photo-initiation sulfydryl-ene click reaction, connecting alpha-sulfydrylmethyltriethoxysilane and a double-bond compound, and thus obtaining trialkoxysilanes connected with the thioether bond on the alpha-carbon and containing the different functional groups. According to the method, one of the raw materials is the industrial byproduct chloromethyltrichlorosilane, and the efficient utilization way is opened for chloromethyltrichlorosilane, so that environment protection and energy conversation are realized, the dosage of a toxic catalystis reduced, and the idea of green environment protection is met. According to the preparation method provided by the invention, the raw materials and reaction reagents are easy to get, the product iseasy to separate and purify, and the atom economy is met; the preparation process is simple, the reaction condition is mild, the cost is low, and the preparation method is suitable for large-scale industrial production and application.
Dendrimers with 1, 3, 5-Trisilacyclohexane as Core Unit
Weisheim, Eugen,Neumann, Beate,Stammler, Hans-Georg,Mitzel, Norbert W.
supporting information, p. 329 - 334 (2016/02/27)
1, 1, 3, 3, 5, 5-Hexavinyl-1, 3, 5-trisilacylohexane [Si(CH=CH2)2CH2]3 was synthesized and hydrosilylated with trichlorosilane to afford the first generation of a dendrimer. Conversion of this molecule with 18 Si-Cl functions on its surface with an excess of vinylmagnesium bromide yielded the 18-fold vinylated dendrimer. The new compounds were identified by elemental analyses, multi-nuclear NMR spectroscopy, and mass spectrometry. Crystal structures were obtained for [Si(CH=CH2)2CH2]3 and [Si(CH2-CH2SiCl3)2CH2]3.
METHOD FOR PRODUCING ALKOXY HYDROSILANE
-
Paragraph 0041, (2013/05/09)
Provided is a method for producing an alkoxyhydrosilane, comprising: a reaction (reaction 1) of a halohydrosilane compound (B) represented by H-SiR2c(CR13-bYb)aX3-a-c wherein R1 is a hydrogen atom or C1-20 hydrocarbon group; R2 is a C1-20 hydrocarbon group; X is a halogen atom; Y is a hetero substituent; a is 1 or 2, b is 1, 2 or 3, and c is 1 or 0, provided that a+c is not more than 2, with an alcohol (C) in an amount of 0.50-0.99 molar equivalents relative to Xs of the halohydrosilane compound (B); followed by a reaction (reaction 2) with an orthoester (D) in an amount of 1.00 molar equivalent or more relative to the residual Si-X in the reaction mixture, to produce an alkoxyhydrosilane compound (A) represented by H-SiR2c(CR13-bYb)a(OR8)3-a-c wherein R8 is a C1-20 hydrocarbon group, and R1, R2, Y, a, b, and c are as defined above.
