To a solution of 2-(4-((R)-3-aminopyrrolidin-1-yl)-7-methylquinazolin-2-yl)-3-fluorophenol (100 mg, 0.295 mmol) in 10 mL DMF, at −2° C., was added cyclopropanecarboxylic acid (23 μL, 0.30 mmol), followed by the addition of triethylamine (82 μL, 0.59 mmol) and a solution of HATU (124 mg, 0.32 mmol) in 4 mL DMF. The mixture was warmed to room temperature and stirred for 1 h. Cold water was added to the reaction mixture which resulted in the formation of a precipitate which was collected by filtration and dissolved in CH2Cl2. The solution was then dried over MgSO4, filtered, and concentrated to afford N-((R)-1-(2-(2-fluoro-6-hydroxyphenyl)-7-methylquinazolin-4-yl)pyrrolidin-3-yl)cyclopropanecarboxamide (80 mg, 66%) LC/MS: m/z 407.5 (M+H)+ at 2.08 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).
