Hydrochloric Acid → 3-Chloro-4-(dodecyloxy)benzoic acid

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Reaction Steps

In a mixed solvent of methanol and tetrahydrofuran was dissolved 5.17 g of 4-hydroxy-3-chlorobenzoic acid, and a solution of 2.4 g of sodium hydroxide in 5 ml of water was added to the solution. Then, 10 ml of n-dodecyl bromide was added dropwise to the mixture and the resulting mixture was refluxed for 2 hours. Then, 1.2 g of sodium hydroxide was further added and the mixture was refluxed for 1 hour. The thus-obtained solution was put in a 1N aqueous solution of hydrochloric acid, and the precipitate was recovered and filtration, washed with water and then with n-hexane and recrystallized from ethyl acetate to obtain 4.1 g of 4-n-dodecyloxy-3-chlorobenzoic acid.

Provenance & Evidence