反应详情

A solution of isophthalaldehyde (312.4 g, 2.33 mmol), 6,7-difluoro-2-methylquinoline (278.4 g, 1.55 mmol) and acetic anhydride (416 mL) in 2 L of xylene was heated to reflux overnight. The solvent was evaporated and the product was swished in 2.5 L of EtOAc to yield the title compound (272 g, 56%). 1H NMR (CD3COCD3): δ 10.12 (1H, s), 8.4 (1H, d), 8.29 (1H, s), 8.1-7.85 (6H, m), 7.7-7.55 (2H, m).

1. temperatureto reflux overnight
2. customThe solvent was evaporated