Synthesis of disilylmethanes and polysilacarbosilanes, precursors of silicon carbide-based materials
摘要:
Using a new procedure, substituted disilylmethanes have been prepared from chlorosilanes, dichloromethane, and magnesium in tetrahydrofuran. Bis(chlorosilyl)methanes can be used as comonomers for the synthesis of polysilacarbosilanes, which are transformed into polycarbosilanes, precursors of silicon carbide.
Intramolecular reactions of (alkenyldimethylsilyl)carbenes
作者:John W. Connolly、Paul F. Fryer
DOI:10.1016/s0022-328x(00)87515-4
日期:1971.8
The reaction between compounds of the type [CH2CH(CH2)n](CH3)2SiCH2Cl and sodium has been studied. Intermediacy of the corresponding carbene (or carbenoid reagent) is proposed and evidence for intramolecularcarbene addition to the olefinic linkage is presented in the case where n=0, 2 and 3.
Seyferth, Dietmar; Friedrich, Holger; Krska, Shane W., Zeitschrift fur Naturforschung, B: Chemical Sciences, 1994, vol. 49, # 12, p. 1818 - 1826
作者:Seyferth, Dietmar、Friedrich, Holger、Krska, Shane W.
DOI:——
日期:——
Synthesis of Silylene−Alkylene−Silylene−Vinylene Polymers via Catalytic Silylative Coupling (SC) Polycondensation
作者:Bogdan Marciniec、Ewa Małecka、Marek Ścibiorek
DOI:10.1021/ma0217433
日期:2003.7.1
alpha,omega-Bis(vinyldimethylsilyl)alkanes (1-4) of the general formula CH2 = CH(CH3)(2)Si(CH2)n-(CH3)(2)SiCH =CH2 (where n = 1-4) undergo effective silylative coupling (SC) polycondensation, if catalyzed by [RuCl2(PPh3)(3)] (II) or [RuHCl(CO)(PPh3)(3)] (III), giving linear polymers (5-8) (M,, = 7300-8500) containing a mixture of trans-1,2- and gem-fragments, but in the presence of [RuCl2(CO)(3)}(2)] (1) as a catalyst, highly stereoselective trans-tactic linear polymers are isolated (9-12) (M-w = 6200-9200). The products of both new processes cannot be synthesized via ADMET polymerization or ring-closing metathesis (RCM).
Zhun', V. I.; Tabenko, B. M.; Shumilin, M. I., Journal of general chemistry of the USSR, 1988, vol. 58, # 12, p. 2401 - 2406
作者:Zhun', V. I.、Tabenko, B. M.、Shumilin, M. I.、Bochkarev, V. N.、Slyusarenko, T. F.、Sheludyakov, V. D.
DOI:——
日期:——
Solution-phase far-UV photochemistry of unsaturated organosilanes: dehydrosilylation, dyotropic rearrangement, and protodesilylation
作者:Mark G. Steinmetz、Mark A. Langston、Richard T. Mayes、B. S. Udayakumar