反应详情

A stirred suspension of 4-bromobenzoic hydrazide (4.0 g, 18.6 mmol) in triethyl orthoacetate (15 ml) was heated under reflux for 24 h. The reaction mixture was cooled and the precipitate filtered, washed with 60-80° C. petroleum ether (20 ml) and dried to give the title compound as a yellow solid (3.86 g, 87%).

1. temperaturewas heated
2. temperatureunder reflux for 24 h
3. temperatureThe reaction mixture was cooled
4. filtrationthe precipitate filtered
5. washwashed with 60-80° C. petroleum ether (20 ml)
6. customdried