1-enthynylheptamethyltrisilane (IV) led to the formation of dimethylsilylene, ethynylpentamethyldisilane and 1,1-dimethyl-2-pentamethyldisilanyl-1-silacyclopropene intermediate. The photolysis of tris(trimethylsilyl)ethynylsilane (VI) in the presence of methanol produced 1-trimethylsilyl-1-bis(trimethylsilyl)methoxysilylethene and hexamethyldisilane. Photolysis of II and III in the absence of a trapping agent
Synthesis of silanes and germanes with polyunsaturated aliphatic substituents
作者:N. O. Yarosh、L. V. Zhilitskaya、M. G. Voronkov
DOI:10.1007/s11172-012-0279-z
日期:2012.10
Hydrosilylation of alkynes R3MC≡CH (M = Si, Ge) afforded adducts whose subsequent treatment with ethynylmagnesium bromide gives polyunsaturated silanes and germanes R3MCH=CHSi(C≡CH)3. The latter can be subjected to the same transfomations to result in the unsaturated chain growth.
Hydrosilylation of alkynes catalyzed by platinum on carbon
作者:Moni Chauhan、Brian Jay Hauck、Lindsay P Keller、Philip Boudjouk
DOI:10.1016/s0022-328x(01)01103-2
日期:2002.2
Hydrosilylation of terminal and internal alkynes with chlorosilanes, alkylsilanes, and alkoxysilanes catalyzed by platinum on carbon are discussed. The yields of the isolated vinylsilanes are high and the selectivity of the product depends on the silane used. Hydrosilylation of alkynes with chlorosilanes produced the beta-trans vinylsilanes, while alkyl and alkoxysilanes produced two or three vinylsilane isomers. The selectivity of the catalyst platinum on carbon is similar to Karstedt's catalyst in the reaction of phenylacetylene with triethylsilane or triethoxysilane. High resolution electron microscopy showed colloidal platinum to be present in these reactions. (C) 2002 Published by Elsevier Science B.V.
Schmidbaur, H.; Ebenhoech, J., Zeitschrift fur Naturforschung, B: Chemical Sciences, 1987, vol. 42, # 12, p. 1543 - 1548