Acetic Acid → HCID 19047040, compound

Participants

Reaction Conditions

Reaction Steps

The product from Step D (3.1 g, 0.011 mol) was suspended in a mixture of glacial acetic acid (15 mL) and water (5 mL). The mixture was heated on a steam bath to a temperature of 65° C. Iron powder (1.9 g, 0.035 mol) was then added in small portions (exothermic). Care was taken during the addition to ensure that the temperature did not exceed 75° C. Once the iron had been added, heating at 75° C. was continued for another 10 min. The reaction mixture was hot-filtered onto 30 g cracked ice. After the ice melted, the aqueous mixture was extracted with dichloromethane (3×20 mL). The combined extracts were washed with saturated sodium bicarbonate and brine (30 mL each). The dried (MgSO4) solution was concentrated to furnish 1.4 g (53% yield) of the title compound as a white solid melting at 100°-103° C. 1H NMR (400 MHz, CDCl3) δ 7.62 (s,1H), 7.39 (s,1H), 7.03-7.05 (m,1H), 6.69-6.71 (m,1H), 5.82 (br s,2H), 2.28 (s,3H).

Provenance & Evidence