反应详情

3.10 g (20.1 mmol) of 5-nitro-2-pyridylhydrazine and 2.00 g (20.8 mmol) of 2-imidazolecarbaldehyde were dissolved in 50 ml of ethanol. To this mixture, 1 ml of acetic acid was added and heated under reflux for 2 hours while being stirred. After the resultant reaction mixture was allowed to stand still overnight, coarse crystals precipitated were filtrated by the suction-filtration. The obtained coarse crystals were recrystallized from a hot ethanol solution to obtain a desired product.

1. temperatureheated
2. temperatureunder reflux for 2 hours
3. customAfter the resultant reaction mixture
4. customcoarse crystals precipitated
5. filtrationwere filtrated by the suction-filtration
6. customThe obtained coarse crystals
7. customwere recrystallized from a hot ethanol solution