反应 #1596974

反应方程式

Ethyl p-hydroxybenzoate

5-bromopentylvinyl ether

potassium carbonate

N,N-dimethylacetamide

→

4-(5-vinyloxypentyloxy)benzoic acid

收率 128.6%

溶剂

water

反应条件

后处理

1. 1
   温度After cooled
2. 2
   萃取extracted with ethyl acetate (500 mL)
3. 3
   洗涤washed two times with water (100 mL)
4. 4
   干燥This was dried with anhydrous magnesium sulfate
5. 5
   过滤filtered
6. 6
   其他The 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
   温度heated
10. 10
    温度under reflux for 2 hours
11. 11
    温度After cooled
12. 12
    过滤the 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
    过滤the precipitated crystal was collected through filtration under reduced pressure
16. 16
    洗涤washed with water
17. 17
    其他This was dried

实验过程

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):

来源