13528-93-3Relevant articles and documents
Synthesis of unsymmetrical 1,2-bis(diorganochlorosilyl)ethanes
Lakhtin,Knyazev,Gusel'nikov,Buravtseva,Kuyantseva,Zalomnova,Parshkova,Bykovchenko,Kisin,Chernyshev
experimental part, p. 1668 - 1674 (2009/02/06)
Unsymmetrical 1,2-bis(diorganylsilyl)ethanes were synthesized by two procedures. Hydrosilylation of chloro(vinyl)silanes were used to obtain compounds of the general formula ClMe2SiCH2CH 2SiRMeCl with different substituents (R = Et, Vin, Ph) on the silicon atom. Chlorodealkylation of 1,2-bis(trialkylsilyl)ethanes gave compounds of the general formula ClAlk2SiCH2CH2SiAlk 2Cl (Alk = Me, Et, Pr). It is established that the latter reaction provides high yields only with Me-and Et-substituted compounds, whereas Pr-substituted products are formed in poor yields. The mechamism of this reaction based on quantum-chemical calculations is offered.
Process for the preparation of halogenated 1,2-disilaethanes
-
, (2008/06/13)
A process for the preparation of halogenated 1,2-disilaethanes of the general formula X3?nRnSi—CHR1CHR1—SiRnX3?n??(I) in which R may be identical or different and denotes a hydrogen atom or a monovalent optionally substituted hydrocarbon radical having 1 to 40 carbon atom(s) per radical, R1may be identical or different and denotes a hydrogen atom or a monovalent optionally substituted hydrocarbon radical having 1 to 40 carbon atom(s) per radical, X denotes a halogen atom and n denotes 0, 1 or 2, wherein halogenated 1,2-disilaethenes of the general formula X3?nRnSi—CR1═CR1—SiRnX3?n??(II) in which R, R1, X and n have the meaning stated above therefor, are reacted with hydrogen in the presence of promoting catalysts. The product is produced in high yield and purity.
Organosilicon compound and process for producing organosilicon compound
-
, (2008/06/13)
An organosilicon compound having a Si--C--C--Si bond, a C=C--Si bond and/or a CH--CH--Si bond is prepared by reacting an olefin or a substituted olefin with a disilane in the presence of a platinum-containing catalyst. The resulting compound can be further treated with an alkyl lithium, an aryl lithium or a Grignard reagent.