Acetic Acid → HCID 21847840, compound

Participants

Reaction Steps

Sodium hydride (0.24 g) was added to a solution of 2-hydroxypyridine (0.95 g) in NMP (10 ml) and the mixture was stirred at ambient temperature for 30 minutes. A mixture of a portion (3 ml) of the resultant solution and 4-(3,4-dichloroanilino)-6-fluoroquinazoline hydrochloride (0.172 g) was heated at 215° C. for 10 hours. The reaction mixture was acidified with glacial acetic acid and evaporated at 90° C. under high vacuum. The residue was chromatographed on silica using a mixture of methylene chloride and methanol, increasing in polarity from pure methylene chloride to a 19:1 mixture of methylene chloride: methanol as eluent. The product so obtained was triturated with a 1:1 mixture of isopropanol and ethyl acetate. The solid was filtered off, washed with ethyl acetate and dried under high vacuum to give 4-(3,4-dichloroanilino)-6-(2-oxo-1,2-dihydropyridin-1-yl)quinazoline (0.099 g); NMR Spectrum: (CD3SOCD3) 6.44 (m, 1H), 6.57 (m, 1H), 7.55-7.66 (m, 1H), 7.68 (d, 1H), 7.75-8.00 (m, 4H), 8.34 (d, 1H), 8.65 (s, 1H), 8.78 (s, 1H), 9.78 (s, 1H);

Provenance & Evidence