Реакция #161520

Уравнение реакции

2,2-Diethyloxirane

3-bromophenol

cesium carbonate

→

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

Растворители

DMSO

Условия реакции

Обработка

1. 1
   ЭкстракцияCrude product was extracted from water with diethyl ether
2. 2
   ПромывкаThe combined organic was washed with brine
3. 3
   Сушкаdried over Na2SO4
4. 4
   Фильтрацияfiltered
5. 5
   Концентрированиеconcentrated under reduced vacuum
6. 6
   ДругоеPurification by flash chromatography (0-20% EtOAc/hexanes gradient)

Методика

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).

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