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ChemicalBook CAS DataBase List 4-Fluorobenzoic acid
456-22-4

4-Fluorobenzoic acid synthesis

14synthesis methods
-

Yield:456-22-4 97%

Reaction Conditions:

with diethylene glycol dimethyl ether at 70; for 0.5 h;Sonication;

Steps:

23 Example 23: Preparation of 4-fluorobenzoic acid:

In a 10 mL round bottom flask, 0.63 g of 4-fluorobenzyl alcohol and 2 g of diethylene glycol dimethyl ether were sequentially added.The resulting mixture was subjected to ultrasonic irradiation at 40 kHz/30 W/70 ° C for 30 minutes in an ultrasonic reaction apparatus.Diethylene glycol dimethyl ether was removed under reduced pressure and recrystallized to give 0.67 g of 4-fluorobenzoic acid, yield 97%.

References:

CN108467342,2018,A Location in patent:Paragraph 0142; 0143

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