反应详情

4-(1-Carboxyethoxy)-1,2-naphthoquinone (0.22 g, 9×10-4) and 2-hydrazino-3-methoxy-5-sulfamoylpyridine (0.2 g, 9×10-4 mole) were added to acetic acid (15 ml), along with 2 to 3 drops of concentrated hydrochloric acid. After stirring overnight, the resulting precipitate was collected by filtration, air dried, slurried twice with boiling acetic acid (5 ml) and isolated again by filtration; yield, 80 mg (20 percent).

1. filtrationthe resulting precipitate was collected by filtration, air
2. customdried
3. customisolated again by filtration
4. customyield