反应详情

A solution of 2,3-dihydro-1H-imidazo[1,2-b]pyrazole-1,7-dicarbaldehyde (1 g) and ammonium acetate (653 mg) in nitromethane (20 ml) was refluxed for 4 hours. The reaction mixture was evaporated under reduced pressure and extracted with dichloromethane. The extract was dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo to give 7-[(E)-2-nitroethenyl]-2,3-dihydro-1H-imidazo[1,2-b]pyrazole-1-carbaldehyde (1.00 g).

1. customThe reaction mixture was evaporated under reduced pressure
2. extractionextracted with dichloromethane
3. dry with materialThe extract was dried over anhydrous magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo