反应详情

A solution of 3-cyclopentyl-2-(4-methanesulfonyl-3-nitrophenyl)-propionic acid (prepared as in Example 14, 150 mg, 0.439 mmol), triethylamine (0.184 mL, 1.32 mmol), benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate (291 mg, 0.659 mmol), and 4-aminopyrimidine (63 mg, 0.659 mmol) in methylene chloride (4 mL) was stirred at 25° C. overnight. The crude reaction mixture was directly purified by Biotage chromatography (FLASH 40M, Silica, 1/2 hexanes/ethyl acetate) to afford 3-cyclopentyl-2-(4-methanesulfonyl-3-nitro-phenyl)-N-pyrimidin-4-yl-propionamide (56 mg, 30%) as a pale yellow foam: mp 91–95° C. (foam to gel); EI-HRMS m/e calcd for C19H22N4O5S (M+) 418.1311, found 418.1310.

1. customThe crude reaction mixture
2. customwas directly purified by Biotage chromatography (FLASH 40M, Silica, 1/2 hexanes/ethyl acetate)