반응 #161520

반응 방정식

2,2-Diethyloxirane

3-bromophenol

cesium carbonate

→

3-((3-bromophenoxy)methyl)pentan-3-ol

용매

DMSO

반응 조건

후처리

1. 1
   추출Crude product was extracted from water with diethyl ether
2. 2
   세척The combined organic was washed with brine
3. 3
   건조dried over Na2SO4
4. 4
   여과filtered
5. 5
   농축concentrated under reduced vacuum
6. 6
   기타Purification by flash chromatography (0-20% EtOAc/hexanes gradient)

실험 절차

2,2-Diethyloxirane (6.5 g of a 60% crude, 40 mmol), 3-bromophenol (5.7 g, 33 mmol), and cesium carbonate (12.0 g, 37 mmol) were combined in anhydrous DMSO (20 mL) in a sealed pressure tube and the reaction was stirred and heated at 120° C. for 2 d. Crude product was extracted from water with diethyl ether. The combined organic was washed with brine, dried over Na2SO4, filtered and concentrated under reduced vacuum. Purification by flash chromatography (0-20% EtOAc/hexanes gradient) gave 3-((3-bromophenoxy)methyl)pentan-3-ol as a colorless oil. Yield (7.1 g, 79%): NMR (400 MHz, CDCl3) δ 7.19 (t, J=8.0 Hz, 1H), 7.05-7.12 (m, 2H), 6.90-6.94 (m, 1H), 4.31 (s, 1H), 3.71 (s, 2H), 1.41-1.55 (m, 4H), 0.80 (t, J=7.6 Hz, 6H).

출처