Reaction of Allylsilanes with Methylchlorohydridesilanes and Symmetrical Tetramethyldisiloxane.

The hydrosilylation reactions of allylsilanes R3SiAll (R = Cl3, Me3) with methylchlorohydridesilanes MenCl3–nSIH (n = 0–2) and symmetrical tetramethyldisiloxane in the presence of the Karstedt catalyst have been studied. It has been found that the change in reactivity of allylsilanes in these reactions has been similar to the allylgermanes, except for the reaction of allyltrichlorosilane with dimethylchlorosilane, probably due to lower electronegativity of the Cl3Si group as compared to the Cl3Ge group. The allylsilanes have shown higher reactivity in these reactions than the isostructural allylgermanes. A scheme of the possible course of the studied reactions has been proposed. The synthesized compounds have been identified using 1H NMR spectroscopy and chromatography–mass spectrometry. [ABSTRACT FROM AUTHOR]