Hydrochloric Acid → 4-(Pyridin-4-yl)benzoic acid hydrochloride

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Reaction Steps

The 4-pyridin-4-yl-benzoic acid ethyl ester (430 mg, 1.89 mmol) was heated to 100° C. in 6.5 mL of 3M HCl solution overnight to completion. The mixture was cooled to room temperature and diluted with water (dissolves precipitate). The solution was filtered and concentrated in vacuo to afford the 4-pyridin-4-yl-benzoic acid hydrochloride salt as a pale yellow solid (380 mg, 85%). 1H NMR (DMSO-d6, 400 MHz) δ 8.93 (d, J=5.6 Hz, 2H), 8.27 (d, J=5.6 Hz, 2H), 8.13 (d, J=8.0 Hz, 2H), 8.09 (d, J=8.0 Hz, 2H), —CO2H or —NH+ not observed. LCMS (APCI+) m/z 200 [M+H]+; Rt=1.05 min.

Provenance & Evidence