Sodium Hydroxide → HCID 23508809, compound

Participants

Reaction Steps

4-[4-(4-tert-Butylphenyl)-4-oxo-2-(4-trifluoromethoxyphenyl)butyryl]benzoic acid methyl ester (13.9 g, 27.2 mmol) was suspended in ethanol (120 mL, 96%) and added sodium hydroxide (4N, 27,2 mL). After 4½ h the reaction was evaporated to dryness. The residue was added water (200 mL) and hydrochloric acid (4N, 30 mL) to pH 1-2 causing precipitation. The mixture was stirred for ½ h. The precipitate was filtered, washed carefully with water, and dried the night over at 40° C. in vacuo. The residue was crystallised from methanol and water to afford 4-[4-(4-tert-butylphenyl)-4-oxo-2-(4-trifluoromethoxyphenyl)butyryl]benzoic acid (10.4 g).

Provenance & Evidence