反应详情

温度

110 °C

Prepared using General Procedure 10: A mixture of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate INT-13 (30.0 mg, 0.06 mmol), 5-bromo-2-iodo-4-methoxypyrimidine (22.3 mg, 0.07 mmol), and sodium carbonate (12.5 mg, 0.12 mmol) in acetonitrile (0.80 mL), THF (0.80 mL) and H2O (0.40 mL) was degassed for 10 min. Pd(dppf)Cl2:CH2Cl2 (5 mg, 0.005 mmol) was added and the reaction mixture heated at 110° C. in a microwave for 30 min. Once cooled, the reaction was diluted with NaHCO3 (5 mL), extracted with EA (3×5 mL) and the combined organics dried over MgSO4 and concentrated. The residue was purified by column chromatography (EA/hexanes) to afford 20.0 mg (60%) of tert-butyl (S)-3-(4-(5-bromo-4-methoxypyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate as a white solid. LCMS-ESI (m/z) calculated for C29H34BrN3O4: 568.5. found 514.2 [M−tBu+H]+, tR=11.0 min. (Method 2).

1. customPrepared
2. temperatureOnce cooled
3. extractionextracted with EA (3×5 mL)
4. dry with materialthe combined organics dried over MgSO4
5. concentrationconcentrated
6. customThe residue was purified by column chromatography (EA/hexanes)