Реакция #1596974

Уравнение реакции

Ethyl p-hydroxybenzoate

5-bromopentylvinyl ether

potassium carbonate

N,N-dimethylacetamide

→

4-(5-vinyloxypentyloxy)benzoic acid

Выход 128.6%

Растворители

water

Условия реакции

Обработка

1. 1
   ТемператураAfter cooled
2. 2
   Экстракцияextracted with ethyl acetate (500 mL)
3. 3
   Промывкаwashed two times with water (100 mL)
4. 4
   СушкаThis was dried with anhydrous magnesium sulfate
5. 5
   Фильтрацияfiltered
6. 6
   ДругоеThe solvent was removed through concentration under reduced pressure
7. 7
   workup.DISSOLUTIONthe residue was dissolved in methanol (100 mL)
8. 8
   workup.ADDITIONgradually added
9. 9
   Температураheated
10. 10
    Температураunder reflux for 2 hours
11. 11
    ТемператураAfter cooled
12. 12
    Фильтрацияthe formed crystal was collected through filtration
13. 13
    workup.DISSOLUTIONdissolved in water (1 L)
14. 14
    workup.ADDITIONConcentrated hydrochloric acid (25.7 mL) was added
15. 15
    Фильтрацияthe precipitated crystal was collected through filtration under reduced pressure
16. 16
    Промывкаwashed with water
17. 17
    ДругоеThis was dried

Методика

Ethyl p-hydroxybenzoate (33.2 g), 5-bromopentylvinyl ether (58.0 g), potassium carbonate (41.5 g) and N,N-dimethylacetamide (200 mL) were put into a 500-mL three-neck flask, and stirred at 120° C. for 5 hours. After cooled, the reaction mixture was poured into water (200 mL), extracted with ethyl acetate (500 mL), and washed two times with water (100 mL). This was dried with anhydrous magnesium sulfate, and filtered. The solvent was removed through concentration under reduced pressure, the residue was dissolved in methanol (100 mL), and a methanol solution (20 mL) of potassium hydroxide (16.8 g) was dropwise and gradually added thereto, and heated under reflux for 2 hours. After cooled, the formed crystal was collected through filtration and dissolved in water (1 L). Concentrated hydrochloric acid (25.7 mL) was added thereto, and the precipitated crystal was collected through filtration under reduced pressure, and washed with water. This was dried to give 4-(5-vinyloxypentyloxy)benzoic acid (TP-29C) (64.3 g, 90%). Production of 2,3,6,7,10,11-hexa(4-(5-vinyloxypentyloxy)benzoyloxy)triphenylene (TP-29):

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