Реакция #51866

Уравнение реакции

(3,4-dichloro-phenoxy)-acetic acid

allyl alcohol

→

title compound

Выход 96.8%

(3,4-Dichloro-phenoxy)acetic acid allyl ester

Выход 96.8%

Условия реакции

Обработка

1. 1
   Концентрированиеconcentrated sulfuric as a catalyst
2. 2
   Другоеthe volatile fractions removed in vacuo
3. 3
   workup.DISSOLUTIONThe residue was dissolved in ethyl ether (50 cm3)
4. 4
   Промывкаwashed with water (25 cm3)
5. 5
   Промывкаwashed with saturated sodium bicarbonate (25 cm3)
6. 6
   Промывкаwashed with brine (25 cm3)
7. 7
   Сушкаdried over magnesium sulfate, vacuum
8. 8
   Фильтрацияfiltered
9. 9
   Другоеthe filtrate volatile fractions removed in vacuo

Методика

To a solution of commercially available (3,4-dichloro-phenoxy)-acetic acid (2.65 g, 12.0 mmol) in allyl alcohol (12.0 cm3, 180 mmol) at ambient temperature under an atmosphere of dry nitrogen was added 4 drops concentrated sulfuric as a catalyst. The solution was stirred at ambient temperature for 20 hours and the volatile fractions removed in vacuo. The residue was dissolved in ethyl ether (50 cm3), washed with water (25 cm3), washed with saturated sodium bicarbonate (25 cm3), washed with brine (25 cm3), dried over magnesium sulfate, vacuum filtered and the filtrate volatile fractions removed in vacuo to afford the title compound as a colorless viscous oil (3.02 g, 96.8%) with positive ion ESI (M+H)+261.3.

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