反应详情

An amount, as set forth in Table 1, of a Raney nickel-chromium catalyst, sold by Grace Company as "Raney 2400 chromium promoted nickel," containing 2-3% by weight of chromium, was loaded in the form of a suspension in a solvent at 30% by weight into an autoclave having a volume of 500 cm3. Then there was added methyl-phenyl-dimethoxysilane in the amount set forth in Table 1, together with an additional solvent until the total volume reached 200 cm3. The mixture was heated gradually over a period of one hour under strong stirring at the temperature and hydrogen pressure set forth in Table 1. After the reaction time indicated in Table 1, the hydrogenation was substantially complete. The final mass was cooled, the catalyst was separated by decantation and filtration, and the solvent was evaporated. Methyl-cyclohexyl-dimethoxy-silane was obtained, having a purity of 99.6%, in the amounts and yields set forth in Table 1.

1. temperatureThe mixture was heated gradually over a period of one hour
2. temperatureThe final mass was cooled
3. customthe catalyst was separated by decantation and filtration
4. customthe solvent was evaporated