Selective synthesis of halosilanes from hydrosilanes and utilization for organic synthesis
作者:Atsutaka Kunai、Joji Ohshita
DOI:10.1016/s0022-328x(03)00254-7
日期:2003.11
Selective synthesis of halosilanes has been examined. Various types of halosilanes and halohydrosilanes, such as R3SiX, R2SiHX, R2SiX2, RSiH2X, RSiHX2 (X = Cl, Br, F), were obtained by the reactions of the corresponding hydrosilanes with Cu(II)-based reagents selectively in high yields. This method could be also applied to the synthesis of chlorofluorosilanes and chlorohydrogermanes. On the other hand, iodo- and bromosilanes and germanes were obtained by Pd- or Ni-catalyzed hydride-halogen exchange reactions of hydrosilanes with alkyl or allyl halides. Their synthetic applications have been demonstrated by using iodo-and bromosilanes and chlorofluorosilanes. (C) 2003 Elsevier Science B.V. All rights reserved.
Silane reductions in acidic media
作者:Michael P. Doyle、Charles T. West、Stephen J. Donnelly、Charles C. McOsker
DOI:10.1016/s0022-328x(00)87264-2
日期:1976.9
trifluoride is consumed and fluorosilanes are formed. Reductions of aldehydes and ketones by triethylsilane produce, after hydrolysis, alcohols and symmetrical ethers or, when aryl ketones are reduced, hydrocarbons. Two new synthetic transformations involving organosilanes, reductive elimination and acylation-reduction, are described. The mechanism of reduction in BF3 · Et2O is suggested to involve hydrosilylation