反应详情

To a solution of tert-butyl (R)-1-(2-(2-fluoro-6-hydroxyphenyl)-7-methylquinazolin-4-yl)pyrrolidin-3-ylcarbamate (500 mg, 1.14 mmol) in CH2Cl2 (15 mL) was added TFA (5 mL). The mixture was stirred for 1 h and then neutralized with a 1 M NaOH solution, and the aqueous layer was extracted twice with CH2Cl2. The combined organic layers were dried over MgSO4, filtered, and concentrated. Purification via silica gel chromatography using 3-20% EtOAc/CH2Cl2 gave 2-(4-((R)-3-aminopyrrolidin-1-yl)-7-methylquinazolin-2-yl)-3-fluorophenol. LC/MS: m/z 339.5 (M+H)+ at 0.56 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).

1. extractionthe aqueous layer was extracted twice with CH2Cl2
2. dry with materialThe combined organic layers were dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated
5. customPurification via silica gel chromatography