反应详情

DIPEA (5.48 ml, 31.38 mmol) and tert-butylchlorodimethylsilane (6.76 g, 22.42 mmol) were added to a solution of 2-(ethylamino)ethanol (1.998 g, 22.42 mmol) in DCM (39.3 ml) at room temperature. The mixture was stirred at room temperature for 20 hours, partitioned between H2O/Et2O (50 ml/50 ml). The aqeuous phase was extracted with ether (3×30 ml). The combined organic layers were concentrated under reduced pressure to give a residue which was re-dissolved in DCM (50 ml), dried (Na2SO4), filtered and concentrated under vacuum to give the title compound (3.9 g, yield: 85%).

1. custompartitioned between H2O/Et2O (50 ml/50 ml)
2. extractionThe aqeuous phase was extracted with ether (3×30 ml)
3. concentrationThe combined organic layers were concentrated under reduced pressure
4. customto give a residue which
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated under vacuum