反应详情

A mixture of 3-(3-chloro-2-nitrophenylamino)propionic acid (21.5 g), which was synthesized according to the method of Giovanni Pappalardo et al. (Ann. Chim. (Rome), 55, 182 (1965)), phosphorus pentoxide (37.0 g) and toluene (160 ml) was refluxed for 90 minutes. After cooling, toluene was removed in vacuo. The residue was washed with ether to give 7-chloro-2,3-dihydro-8-nitro-4(1H)-quinolinone (yield 10.0 g).

1. customwas synthesized
2. temperaturewas refluxed for 90 minutes
3. temperatureAfter cooling
4. customtoluene was removed in vacuo
5. washThe residue was washed with ether