反应详情

温度

0 °C

1-[5-(4-tert-Butylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethanone (0.568 mmol, 154.8 mg) synthesized in Synthetic Example 3, methyl 2-chloro-4-hydrazinocarbonylbenzoate (0.568 mmol, 130.0 mg) synthesized in Reference Synthetic Example 41 and p-tosylic acid monohydride (30 mol %, 29.4 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 (233.7 mg, yield 85%).

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