Реакция #50162

Уравнение реакции

4-methoxyphenol

1-bromo-2-ethylhexane

→

1-methoxy-4-(2'-ethylhexyloxy)benzene

Выход 43.4%

Растворители

methanol

methanol

Условия реакции

Обработка

1. 1
   Температураthis mixture was heated
2. 2
   Температураto reflux for 30 min
3. 3
   ТемператураThe mixture was then heated
4. 4
   Температураto reflux for 18 hours
5. 5
   ДругоеThe solvent was removed in vacuo
6. 6
   workup.DISSOLUTIONthe residue dissolved in ether (200 ml)
7. 7
   Промывкаwashed with dilute aqueous sodium hydroxide (500 ml ) and water (500 ml )
8. 8
   Сушкаdried over MgSO4
9. 9
   Концентрированиеconcentrated in vacuo again
10. 10
    workup.DISTILLATIONDistillation at 120° C./0.1 mm Hg

Методика

Sodium metal (6.50 g, 283 mmol) was dissolved in dry methanol (100 ml) under Ar to give a 2.5M solution of sodium methoxide. A solution of 4-methoxyphenol (29.3 g, 236 mmol) in dry methanol (150 ml) was added and this mixture was heated to reflux for 30 min. After cooling to room temperature, a solution of 1-bromo-2-ethylhexane (46.5 g, 259 mmol) in dry methanol (150 ml) was added dropwise. The mixture was then heated to reflux for 18 hours. The solvent was removed in vacuo, the residue dissolved in ether (200 ml), washed with dilute aqueous sodium hydroxide (500 ml ) and water (500 ml ), dried over MgSO4 and concentrated in vacuo again. Distillation at 120° C./0.1 mm Hg afforded 24.2 g (43%) 1-methoxy-4-(2'-ethylhexyloxy)benzene.

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