反应详情

N-Methylmorpholine (2.31 mL, 21 mmol) was added dropwise by syringe to a mixture of 2-methylsulfanyl-6-phenylpyrimidine-4-carboxylic acid (3.45 g, 14 mmol), ammonium chloride (4.27 g, 80 mmol), HOBt (2.84 g, 21 mmol), and EDC (4.0 g, 21 mmol) in DMF (40 mL) at room temperature. The reaction solution was stirred at room temperature for 3 h before the DMF was removed by rotary evaporation. Column chromatography (SiO2, DCM/EtOAc 5:1) afforded 3.23 g of 2-(methylthio)-6-phenylpyrimidine-4-carboxamide as a white solid. 1H NMR (DMSO-d6, 300 MHz) δ 8.25 (m, 2H), 8.13 (s, 1H), 7.59 (m, 3H), 2.62 (s, 3H). HPLC ret. time 2.71 min, 10-100% CH3CN, 5 min gradient. ESI-MS m/z 246.1 (M+H)+.

1. customwas removed by rotary evaporation