反应详情

A suspension of 3-amino-6-(4-fluorophenyl)-pyridine-2-carboxylic acid amide (0.46 g, 2.0 mmol) in triethyl orthoacetate (10 ml) was heated under reflux for 3 hours. After cooling to room temperature, the precipitate was collected by filtration and washed with diethyl ether, yielded the title compound as a white solid (360 mg, yield 70%) which was characterised as follows: MS (m/z): 256 ([M+H]+, 100).

1. temperaturewas heated
2. temperatureunder reflux for 3 hours
3. filtrationthe precipitate was collected by filtration
4. washwashed with diethyl ether