Citric Acid → 4-(3-Fluorophenoxy)thiophene-2-carbaldehyde

Participants

Reaction Steps

To a solution of 2-(4-(3-fluoro-phenoxy)-thiophen-2-yl)-[1,3]dioxolane described in Preparation Example 33 (280 mg, 1.05 mmol) in methanol (10 mL) was added citric acid aqueous solution (10 mL), and the solution was stirred at room temperature for 30 minutes. The reaction solution was neutralized with an aqueous solution of sodium bicarbonate, the solution was extracted with ethyl acetate, the organic layer was dried over anhydrous sodium sulfate, the solvent was evaporated in vacuo, and the title compound (210 mg, 0.95 mmol, 90%) was obtained as a colorless oil.

Provenance & Evidence