Hydrochloric Acid → 4-Hydroxy[1,1'-biphenyl]-3-carboxylic acid

Beteiligte Stoffe

Reaktionsschritte

In 400 ml of water, 21.7 g of bromosalicylic acid, 13.41 g of phenyl borate and 15.28 g of potassium carbonate were dissolved. The solution was stirred at room temperature for 40 minutes. The completion of the reaction was confirmed by TLC, and the reaction solution was poured into a mixture of diluted hydrochloric acid and ethyl acetate. The organic phase was extracted, separated, and washed with a saturated aqueous sodium chloride solution. The organic phase was dried with magnesium sulfate, and concentrated. The concentrate was recrystallized with acetonitrile to obtain 5-phenylsalicyclic acid as colorless crystals. The amount was 18.58 g (yield: 87%). The molecular structure was confirmed with a mass spectrum. Synthesis of ethyl 5-phenylsalicylate

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