反应详情

3-Isopropyl-1,2,4-oxadiazole-5-carboxylic acid (1.281 mmol, 0.2 g) was dissolved in DMF (5 ml) under nitrogen atmosphere. EDCI (1.601 mmol, 0.307 g), DIPEA (3.20 mmol, 0.414 g) and HOBt (1.601 mmol, 0.216 g) were added and the resulting mixture was stirred for 20 min at RT. (S)-4-(1-(2-Aminopropyl)-1H-pyrazol-3-yl)-2-chloro-6-fluorobenzonitrile (1.067 mmol, 0.298 g) dissolved in DMF (5 ml) was added and the resulting mixture was stirred at RT for 2 days. The mixture was diluted with water and EtOAc, washed with 2 M Na2CO3, water and brine. The combined organics were dried, filtered and evaporated. The crude product was purified by preparative HPLC. 0.0056 g of the title compound was obtained. 1H-NMR (400 MHz, CDCl3): δ 1.25 (d, 3H), 1.38 (d, 6H), 3.11-3.26 (m, 1H), 4.26-4.35 (m, 1H), 4.41-4.50 (m, 1H), 4.55-4.67 (m, 1H), 6.65-6.69 (m, 1H), 7.54-7.57 (m, 1H), 7.64-7.69 (m, 1H), 7.74-7.77 (m, 1H), 8.39 (d, 1H).

1. additionwas added
2. stirringthe resulting mixture was stirred at RT for 2 days
3. washwashed with 2 M Na2CO3, water and brine
4. customThe combined organics were dried
5. filtrationfiltered
6. customevaporated
7. customThe crude product was purified by preparative HPLC