反应详情

温度

23 °C

To a suspension of 1-[5-(2-bromo-acetylamino)-6-chloro-1-(2-methoxy-ethoxymethyl)-1H-benzoimidazol-2-yl]-1H-pyrazole-4-carboxylic acid ethyl ester (0.100 g, 0.194 mmol) and dichloromethane (1 mL) was added morpholine (51.0 μL, 0.580 mmol). The reaction mixture was stirred at 23° C. for 50 min. The reaction mixture was partitioned between EtOAc (15 mL) and water (10 mL), and the aqueous layer was further extracted with EtOAc (2×15 mL). The combined organic layers were washed with brine (15 mL), dried, filtered, and concentrated under reduced pressure, to yield the titled compound (97 mg, 96% yield) as a 3:1 mixture of regioisomers. MS (ESI/CI): mass calcd. for C23H29ClN6O6, 520.2; m/z found, 521.2 [M+H]+. 1H NMR (400 MHz, CDCl3): 10.00 (s, 1H), 8.89 (s, 1H), 8.85 (s, 1H), 8.18 (s, 1H), 7.68 (s, 1H), 6.12 (s, 2H), 4.36 (q, J=7.1 Hz, 2H), 3.87-3.80 (m, 4H), 3.67-3.60 (m, 2H), 3.48-3.42 (m, 2H), 3.32 (s, 2H), 3.24 (s, 3H), 2.73-2.67 (m, 4H), 1.38 (t, J=7.1 Hz, 3H).

1. customThe reaction mixture was partitioned between EtOAc (15 mL) and water (10 mL)
2. extractionthe aqueous layer was further extracted with EtOAc (2×15 mL)
3. washThe combined organic layers were washed with brine (15 mL)
4. customdried
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure