反应详情

To a solution of ethyl (2′-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-1′(2′H)-yl)acetate (0.35 g, 0.92 mmol) in ethanol (10 mL) was added hydrazine hydrate (0.15 mL, 1.84 mmol) and the solution was heated at reflux for 16 h. Upon being allowed to cool to ambient temperature a solid precipitate formed. The solid was filtered and washed with ethanol (2 mL) to afford 2-(2′-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-1′(2′H)-yl)acetohydrazide (0.285 g, 84%) as a colorless solid: MS (ES+) m/z 367.9 (M+1).

1. temperaturethe solution was heated
2. temperatureat reflux for 16 h
3. customformed
4. filtrationThe solid was filtered
5. washwashed with ethanol (2 mL)