反应详情

温度

0 °C

1-[5-(4-tert-Butylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethanone (0.554 mmol, 150.9 mg) synthesized in Synthetic Example 3, methyl 2-bromo-4-hydrazinocarbonylbenzoate (0.554 mmol, 150.8 mg) synthesized in Reference Synthetic Example 42 and p-tosylic acid monohydride (30 mol %, 28.6 mg) were dissolved in isopropyl alcohol (15 mL) and stirred under heating with reflux for 8 hours, and the reactor was cooled to 0° C. The reaction solution was filtered and dried by means of a vacuum pump to give the desired product as a white solid (252.3 mg, yield 86%).

1. temperatureunder heating
2. temperaturewith reflux for 8 hours
3. filtrationThe reaction solution was filtered
4. customdried by means of a vacuum pump