2-Furancarbonyl chloride → HCID 90403260, compound

Participants

Reaction Steps

To a suspension of 3-[6-bromo-1H-imidazo[4,5-b]pyridin-2-yl]-4-chloroaniline (15 g, 46.36 mmol, 1.00 equiv) in dichloromethane (150 mL) was added furan-2-carbonyl chloride (9.1 g, 69.72 mmol, 1.50 equiv) in a bath of ice and stirred overnight at room temperature. The reaction was then quenched by the addition of 50 mL of methanol and concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1/2) to give 8.9 g (46%) of N-(3-[6-bromo-1H-imidazo[4,5-b]pyridin-2-yl]-4-chlorophenyl)furan-2-carboxamide (I-2) as a light yellow solid. 1H-NMR: (DMSO, 300 MHz): 13.09-13.79 (m, 1H), 10.53 (s, 1H), 8.51 (s, 1H), 8.36 (brs, 2H), 7.98-8.02 (m, 2H), 7.68 (d, J=9.0 Hz, 1H), 7.40 (d, J=3.3 Hz, 1H), 6.74 (dd, J=3.3, 1.8 Hz, 1H). MS M/Z=419 (M+1).

Provenance & Evidence