反应详情

A solution of N-cyclopropyl-5-[3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propyl]-1-{4-[(ethylamino)carbonyl]phenyl}-1H-1,2,3-triazole-4-carboxamide (1.27 g, 2.6 mmol) obtained in Example 1201 and hydrazine hydrate (261 mg, 5.2 mmol) in ethanol (20 ml) was boiled under reflux for 3 hr, and the precipitated insoluble material was filtered off. The filtrate was concentrated to dryness to give the title compound as a white powder (0.9 g, 97%).

1. temperatureunder reflux for 3 hr
2. filtrationthe precipitated insoluble material was filtered off
3. concentrationThe filtrate was concentrated to dryness