反应详情

温度

70 °C

Carbonyldiimidazole (130 mg) and triethylamine (0.446 mL) were added to a DMF solution (4 mL) of 3,5-diethoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoic acid (232 mg), and stirred at 70° C. for 2 hours. To the reaction liquid, added was a DMF suspension (2 ml) of 5-(4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxylic acid dihydrochloride (370 mg) and triethylamine (0.335 ml) that had been prepared separately, and further stirred at that temperature for 1 hour. 1 N hydrochloric acid and water were added to the reaction liquid, the resulting solid was taken out through filtration, and recrystallized from methanol to obtain the title compound.

1. customTo the reaction liquid
2. additionadded
3. customhad been prepared separately
4. stirringfurther stirred at that temperature for 1 hour
5. filtrationthe resulting solid was taken out through filtration
6. customrecrystallized from methanol