Acetic Acid → HCID 11086145, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-amino-1-[5-fluoro-2-(methylthio)phenyl]ethanone hydrochloride (4.54 g, 19.27 mmol) in water (29 ml), heated at 90° C., were added trihydrated sodium acetate (2.62 g, 19.27 mmol), glacial acetic acid (17 ml) and 2,5-dimethoxytetrahydrofuran (2.40 ml, 18.50 mmol). After 20 seconds at 90-100° C. the mixture was cooled and extracted with ethyl acetate. The organic layers were washed with a 20% solution of sodium bicarbonate and brine, dried and evaporated. The residue was chromatographed (50% petroleum ether 40-60° in dichloromethane) to afford 2.07 g of 22c as white crystals mp 133.2-134.0° C. (50% yield). 1H NMR (CDCl3) δ7.39-7.15 (m, 34); 6.66-6.65 (m, 2H); 6.22-6.20 (m, 2H); 5.20 (s, 2H); 2.42 (s, 3H). MS m/z 252 (M++H), 234, 202 (100), 183, 169, 154, 141, 126, 109, 80.

Provenance & Evidence