反应详情

温度

80 °C

The procedure described in Tetrahedron, 1967, 23, 1065 (M. Grayson et al.) was followed. Dibutylphosphine oxide, prepared from butyl magnesium bromide and diethylphosphite, (3.3 g, 20 mmol) and triethylamine (2.02 l g, 20 mml) were dissolved in toluene (20 mL) and treated with a solution of trimethylsilyl chloride (2.17 g, 20 mmol) in toluene (5 mL) at room temperature. The solution got very warm and a precipitate formed immediately. The mixture was heated at 80° C. for two hours, then filtered, washed with toluene, and concentrated. Kugelrohr distillation a 80° C. (1.5 mmHg) afforded 4.1 g (86%) of the desired product. 1H NMR (CDCl3) δ1.8-1.2 (m, 6H), 1.1-0.7 (m, 3H), 0.17 (s, 9H).

1. temperatureThe solution got very warm
2. customa precipitate formed immediately
3. filtrationfiltered
4. washwashed with toluene
5. concentrationconcentrated
6. distillationKugelrohr distillation a 80° C. (1.5 mmHg)