反应详情

To a stirred and cooled solution of Compound 119 (0.22 g, 0.63 mmol), in DMF (2.0 mL) was added N-chlorosuccinimide (0.168, 1.26 mmol). The reaction was stirred until the LCMS showed no starting material (2.5 hrs). The reaction mixture was poured into ice cooled water containing Na2S2O3 and NaHCO3 and the resulting solid was filtered, washed with ice-cooled water and dried in vacuo to afford a off-white solid 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (0.14 g, 58%). LCMS m/z (%)=377 (M+H, 35Cl, 35Cl, 100), 379 (M+H, 35Cl, 37Cl, 59.4), 381 (M+H, 37Cl, 37Cl, 10.0). 1H NMR (400 MHz, DMSO-d6) δ: 9.76 (bs, 1H), 8.73 (bs, 1H), 8.56 (bs, 1H), 7.58 (s, 1H), 7.44-7.46 (dd, J=8.6, 2.03 Hz, 2H), 7.34-7.37 (dd, J=8.79, 2.7 Hz, 1H), 7.29 (dd, J=8.85, 2.07 Hz, 3H), 6.92-6.94 (d, J=6.78 Hz, 1H), 3.64 (s, 3H).

1. stirringThe reaction was stirred until the LCMS
2. customno starting material (2.5 hrs)
3. additionThe reaction mixture was poured into ice
4. filtrationthe resulting solid was filtered
5. washwashed with ice-
6. temperaturecooled water
7. customdried in vacuo