4-Aminobenzoic Acid → HCID 25073934, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-chloro-4-(pyridin-2-yl)quinazoline (60 mg, 0.25 mmol) in butanol was added 4-aminobenzoic acid (36 mg, 0.26 mmol) and the stirred mixture was heated to reflux for 20 min, after which time the reaction mixture was cooled and the solvent removed on a rotary evaporator. The residue was redissolved in dimethylformamide (20 mL) and 5-((dimethyl-amino)methyl)-2-methylaniline (50 mg, 0.30 mmol), HATU (170 mg, 0.45 mmol) and Hunig's base (150 μL, 0.87 mmol) were added to the solution. The stirred mixture was heated to 70° C. for 18 h, then diluted with ethyl acetate and the solution was extracted with 10% aqueous lithium chloride and 1 N hydrochloric acid. The combined acidic washes were made basic with saturated sodium bicarbonate and extracted with ethyl acetate. The combined organic extracts were then dried over sodium sulfate, filtered and concentrated on a rotary evaporator. The product was purified by preparative reverse phase HPLC to give N-{5-[(dimethylamino)methyl]-2-methylphenyl}-4-[(4-pyridin-2-ylquinazolin-2-yl)amino]benzamide as a yellow solid (39 mg, 16% yield). 1H-NMR (400 MHz, DMSO-d6): δ 11.30 (s, 1H), 10.30 (s, 1H), 9.68 (s, 1H), 8.84-8.83 (m, 1H), 8.49-8.47 (d, 1H), 8.16-8.09 (m, 3H), 8.16-8.09 (m, 2H), 7.99-7.97 (m, 2H), 7.43-7.39 (m, 1H), 7.37 (s, 1H), 7.21 (d, 2H), 7.07 (d, 1H), 3.43 (br s, 2H), 2.22 (s, 6H), 2.20 (s, 3H). MS (EI) for C30H28N6O: 489.3 (MH+).

Provenance & Evidence