反应详情

To 56.6 ml (1.50 mol) of HCOOH was added 24.9 g (150 mmol) of 3-nitro-4-aminobenzaldehyde. The solution was heated to reflux, 28.4 ml (300 mmol) of acetic anhydride was added dropwise and the solution was refluxed for 30 minutes. The resulting suspension was cooled and poured into 400 ml of cold H2O with rapid stirring. The product was filtered, air dried, and recrystallized from isopropanol to yield 23.2 g (80%) of 3-nitro-4-formamidobenzaldehyde as a bright yellow powder: melting point=183°-191°.

1. temperatureThe solution was heated
2. temperatureto reflux
3. temperaturethe solution was refluxed for 30 minutes
4. temperatureThe resulting suspension was cooled
5. filtrationThe product was filtered
6. customair dried
7. customrecrystallized from isopropanol