反应详情

To a solution of 4-(4-aminophenyl)-N-(4-morpholinophenyl)pyrimidin-2-amine (1.0 g, 2.8 mol) 249(a) and DIPEA (0.5 mL, 1 eq.) in anhydrous DMA (5 mL) was added dropwise 2-acetoxy-2-methylpropionyl chloride (3 mol, 1.05 eq., 0.44 mL) at 0° C. The mixture was stirred for 20 min at room temperature. The solution was diluted with water and EtOAc. The organic layer was concentrated in vacuo. The residue 366(a) was suspended in MeOH (10 mL) and a solution of LiOH—H2O (8.3 mmol, 3 eq. 0.35 g) in water (3 mL) was added. The reaction was complete within 20 min and then was neutralized. The organic solvent was removed in vacuo. The residue was purified to afford 2-hydroxy-2-methyl-N-(4-(2-(4-morpholino-phenylamino)pyrimidin-4-yl)phenyl)propanamide (366) (1.0 g, 85% yield) as a pale yellow solid. 1H-NMR (400 MHz, DMSO-d6): 9.86 (s, 1H), 9.41 (s, 1H), 8.47 (d, 1H), 8.12 (d, 2H), 7.94 (d, 2H), 7.68 (d, 2H), 7.30 pm (d, 1H), 6.94 (d, 2H), 5.82 (s, 1H), 3.75 (m, 4H), 3.08 (m, 4H), 1.38 (s, 6H); MS (EI) m/z for C22H23N5O3HCl: 434.2 (MH+).

1. concentrationThe organic layer was concentrated in vacuo
2. waitThe reaction was complete within 20 min
3. customThe organic solvent was removed in vacuo
4. customThe residue was purified