1,2-Dichloroethane → Methyl 3-fluoro-4-hydroxybenzoate

Participants

Reaction Steps

10.0 g (64.1 mM) of 3-fluoro-4-hydroxybenzoic acid, 150 ml of 1,2-dichloroethane, 80 ml of methanol and 10 ml of concentrated sulfuric acid were mixed, followed by refluxing for 5.5 hours under stirring and further stirring for 12 hours at room temperature. After the reaction, a solution of salt was added to the reaction mixture, followed by sufficient shaking to separate the reaction mixture. The organic layer was recovered from the reaction mixture and the water layer was subjected to extraction with methylene chloride to be added thereto. The resultant organic layer was washed with a 5%-aqueous solution of sodium hydrogencarbonate in a solution of salt and further washed with a solution of salt, followed by drying with anhydrous sodium sulfate. The sodium sulfate was recovered by filtration and the filtrate was condensed into a solid. Hexane was added to the solid and subjected to filtration to obtain 9.98 g of methyl 3-fluoro-4-hydroxybenzoate (Yield: 91.6%).

Provenance & Evidence