反应详情

To 0.482 g (5.06 mmol) of 5-aminopyrimidine in THF (10 mL) was added 2.90 mL of NaHMDS (2 M solution in THF) at 0° C., and the mixture was stirred for 10 min. A solution of 0.5924 g (2.12 mmol) of 4-(2,6-dichloro-5-nitro-4-pyrimidinyl)morpholine (U.S. Pat. Appl. Publ. No. 2009/0181963, the disclosure of which is incorporated herein by reference in its entirety) in THF (5 mL) was added, and the resulting mixture was stirred for 15 min. The reaction mixture was neutralized with acetic acid, diluted with water, and extracted with EtOAc. The organic layer was washed with water and aq. NH3, dried, and concentrated. Chromatography on silica, eluting with hexanes/EtOAc (8:2), gave 0.465 g (65% yield) of 2-chloro-6-(4-morpholinyl)-5-nitro-N-(5-pyrimidinyl)-4-pyrimidinamine as a white powder: 1H NMR (DMSO-d6) δ 10.34 (s, 1H), 8.98 (s, 1H), 8.92 (s, 2H), 3.70 (t, J=4.8 Hz, 4H), 3.50 (t, J=4.8 Hz, 4H).

1. additionwas added
2. stirringthe resulting mixture was stirred for 15 min
3. extractionextracted with EtOAc
4. washThe organic layer was washed with water and aq. NH3
5. customdried
6. concentrationconcentrated
7. washChromatography on silica, eluting with hexanes/EtOAc (8:2)