反应详情

To a solution of methyl 6-cyano-7-(4-(8-methoxyquinolin-3-ylcarbamoyl)phenoxy)chroman-4-carboxylate (0.061 g, 0.120 mmol) in THF (2 mL) was added LiOH—H2O (0.239 mL, 0.239 mmol) and added a few drops of methanol to ensure a homogeneous solution. The reaction was stirred at ambient temperature for 3 hours. A few drops of acetic acid were added to the reaction and the solution concentrated to a yellow/white solid. The crude material was purified by silica gel column chromatography using 5% methanol/dichloromethane+0.1% acetic acid to provide the desired product (0.023 g, 39%). MS (APCI)=496.3 (M+1).

1. concentrationthe solution concentrated to a yellow/white solid
2. customThe crude material was purified by silica gel column chromatography