反应详情

Combined 6-(4-(4-cyanophenyl)-5-hydroxy-1H-pyrazol-1-yl)nicotinic acid (100 mg, 0.327 mmol), EDCI (94.0 mg, 0.490 mmol), and HOBT (66.2 mg, 0.490 mmol) in DMF (2.5 mL) and added N,N-diisopropyl ethylamine (227 μL, 1.306 mmol). Then 2-ethoxyethanamine (43.7 mg, 0.490 mmol) was added and the reaction allowed to stir at room temperature for 16 hours. The reaction mixture was then diluted with water (3.5 mL) and acidified to an approximate pH=4 to give a solid which was collected by filtration, washed with water, MeOH, and diethyl ether to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ 1.04 (t, J=6.95 Hz, 3H) 3.33-3.41 (m, 4H) 3.41-3.48 (m, 2H) 7.70 (d, J=8.34 Hz, 2H) 8.06 (d, J=7.07 Hz, 2H) 8.26-8.49 (m, 2H) 8.58 (br. s., 1H) 8.71 (t, J=5.18 Hz, 1H) 8.77-8.93 (m, 1H) 12.95-13.90 (m, 1H). MS m/z [M+H]+ 378.1.

1. customto give a solid which
2. filtrationwas collected by filtration
3. washwashed with water, MeOH, and diethyl ether