反应详情

温度

0 °C

4-aminopyrimidine (0.16 g, 1.72 mmol) was added to a cooled (0° C.) mixture of NaH (0.17 g, 4.25 mmol, 60% in mineral oil) in DMF (5 mL). The resulting mixture was stirred for 20 minutes under N2 at 0° C. and then 2,6-dichlorobenzoyl chloride (0.3 g, 1.43 mmol) was added dropwise. After one hour the reaction was poured into the ice-water (20 mL). The mixture was extracted with EtOAc (2×50 mL) and the combined organic extracts were concentrated under reduced pressue. The residue was purified by silica gel column chromatography (EtOAc/hexanes=1:1) to afford the desired product (38 mg, yield 10%). 1HNMR: (DMSO-d6, 400 MHz): 611.73 (s, 1H), 8.91 (s, 1H), 8.74 (d, J=5.6 Hz, 1H), 8.17 (d, J=5.6 Hz, 1H), 7.55-7.47 (m, 3H). LCMS (ESI) m/z: 267.8 [M+H+]

1. temperaturea cooled
2. extractionThe mixture was extracted with EtOAc (2×50 mL)
3. concentrationthe combined organic extracts were concentrated under reduced pressue
4. customThe residue was purified by silica gel column chromatography (EtOAc/hexanes=1:1)