反应详情

To a solution of 3-bromobut-3-en-1-ol (5.2 g, 34.4 mmol) in dichloromethane (69 mL) at rt was added tert-Butyldimethylsilyl trifluoromethanesulfonate (10 g. 37.9 mmol) and DIEA (7.22 mL, 41.3 mmol) and the mixture was stirred at rt for 30 min. The reaction mixture was partitioned between dichloromethane and water, and the crude product obtained from the dichloromethane layer was purified by chromatography eluting with 5-30% EtOAc/Hexanes to give the title compound as a colorless liquid (8.72 g, 95%). 1H NMR (400 MHz, CDCl3) δ 5.66 (1H, s), 5.48 (1H, s), 3.81 (2H, t, J=6.0 Hz), 2.64 (2H, t, J=6.0 Hz), 0.91 (9H, s), and 0.09 (6H, s).

1. customThe reaction mixture was partitioned between dichloromethane and water
2. customthe crude product obtained from the dichloromethane layer
3. customwas purified by chromatography
4. washeluting with 5-30% EtOAc/Hexanes