Pyridine → HCID 22050895, compound

Participants

Reaction Steps

To a solution of 3-[3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-(hydroxymethyl)-2-oxopyridin-1(2H)-yl]-N,4-dimethylbenzamide, (225 mg, 0.50 mmol) stirred in CH2Cl2 was added pyridine (55 μL, 0.69 mmol). To the resulting homogeneous solution was then added acetic anhydride (47 μL, 0.51 mmol). The mixture was stirred at rt for 3 h. Additional pyridine (150 μL, 1.8 mmol) and acetic anhydride (100 μL, 1.05 mmol) were then added and the reaction was allowed to stir overnight at rt. The reaction was then quenched with 1N NHCl4 and diluted with CH2Cl2. The layers were separated and the organic layer was then extracted with CH2Cl2 (3×). The organics were then combined, dried, and concentrated in vacuo. The residue was then triturated with Et2O and filtered to give (150 mg, 61%) an off-white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.48 (br s, 1H), 7.87 (app d, J=7.8 Hz, 1H), 7.74-7.69 (m, 2H), 7.52 (d, J=7.5 Hz, 1H), 7.40 (app t, J=8.1 Hz, 1H), 7.28-7.19 (m, 1H), 6.91 (s, 1H), 5.43 (s, 2H), 4.60 (s, 2H), 2.79 (s, 3H), 2.06 (s, 3H), 1.94 (s, 3H). ES-HRMS m/z 535.0676 (M+H calcd for C24H22N2F2BrO5 requires 535.0675).

Provenance & Evidence