反应详情

To a solution of benzenemethanamine (21.8 mL, 0.20 mol) and triethylamine (41.2 mL, 0.30 mol) in acetonitrile (400 mL) was added dropwise t-butylchlorodiphenylsilane (52 mL, 0.20 mol). The mixture was stirred at room temperature for 3 hours and then filtered to remove the insoluble white precipitate (triethylamine hydrochloride). After removal of the solvent in vacuo, the crude product was taken up in a 4:1 mixture of ether/hexane and washed sequentially with H2O, saturated NaHCO3 solution and H2O. The solution was dried (Na2SO4 /K2CO3) and concentrated to leave an oil which was distilled under high vacuum. The major fraction consisting of the pure product (45.9 g, 66%) distilled from 140° to 160° C. at about 0.1-0.2 mm Hg and crystallized on standing at room temperature, m.p. 34°-36° C.

1. filtrationfiltered
2. customto remove the insoluble white precipitate (triethylamine hydrochloride)
3. customAfter removal of the solvent in vacuo
4. additionthe crude product was taken up in a 4:1 mixture of ether/hexane
5. washwashed sequentially with H2O, saturated NaHCO3 solution and H2O
6. dry with materialThe solution was dried (Na2SO4 /K2CO3)
7. concentrationconcentrated
8. customto leave an oil which
9. distillationwas distilled under high vacuum
10. distillationdistilled from 140° to 160° C. at about 0.1-0.2 mm Hg
11. customcrystallized
12. customon standing at room temperature