The compounds (Me3Si)xCH(3−x)Cl (x = 1–3), (Me3Si)xCH(3−x)Br (x = 1, 3) and Me3SiCMe2Br have been found to react with 90% acetone or 80% ethanol at 70° at rates too small for convenient measurement. Towards aqueous acetone, the compound PhMe(Me3Si)CBr is 110 times less reactive at 50° than PhMe2CBr at 0°. It is concluded that relative to α-Me, α-t-Bu or α-Me3Si groups decrease the ease of formation
The methoxide promoted protonolysis of organosilylboranes
作者:Paul Ronald Jones、Thomas Fay Oy Lim
DOI:10.1016/s0022-328x(00)80401-5
日期:1976.10
treated with sodium methoxide in methanol gives significant yields of products resulting from protonolysis of the CB bond. Both α- and β-boro adducts undergo the reaction, which is favored when silicon has methoxy substituents. Quantitative incorporation of deuterium in the saturated products when methanol-O-d is used as the solvent shows that the hydroxyl group of methanol is the proton source. The absence