反应详情

A mixture of methyl-2-(4-fluoro-3-isobutyramidophenyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylate (183 mg, 0.46 mmol), sodium hydroxide (312 mg, 7.8 mmol) in methanol/water (10 mL/4 mL) was heated to reflux for 1.5 h. LC-MS indicated that the starting material was consumed completely. The solvent was removed in vacuo and the residue was acidified with 2M hydrochloric acid solution to Ph=5. The precipitated white solid was collected by filtration and dissolved in acetone, dried over anhydrous magnesium sulfate. The solvent was removed in vacuo to give 2-(4-fluoro-3-isobutyramidophenyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylic acid, which was purified by recrystallization from dichloromethane/methanol/Hexant to afford 140 mg of off-white crystal. Yield: 79.3%. LC-MS (M+1)=385.

1. temperaturewas heated
2. temperatureto reflux for 1.5 h
3. customwas consumed completely
4. customThe solvent was removed in vacuo
5. filtrationThe precipitated white solid was collected by filtration
6. dissolutiondissolved in acetone
7. dry with materialdried over anhydrous magnesium sulfate
8. customThe solvent was removed in vacuo