Journal of Organometallic Chemistry p. 59 - 82 (1987)
Update date:2022-08-11
Topics:
Auner, N.
The reactions of the vinylsilanes Me3SiVi, Me2SiVi2, Me3SiSiMe2Vi, (Me2ViSi)2 and (Me3Si)3SiVi with LiBut in n-pentane in the first step lead to α-lithioalkylsilanes of different stabilities.The secondary reactions are clearly controlled by the reaction conditions: in dilute solution the intramolecular 2,3-LiH elimination to trans-ethene derivatives R3SiCH=CHBut is dominating, and at higher concentrations intermolecular coupling reactions of the Li-alkylsilanes with further vinylsilanes occur, with elimination of LiH and formation of olefinic compounds.At higher temperatures and owing to separation processes, competitive reactions result in the formation of isobutyl derivatives, the elimination of isobutane and the cleavage of Si-Vi bonds.In spite of the complicated reaction mixture a clear interpretation of the results is presented.
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