反应详情

A mixture of 2-chloro-5-nitrobenzoic acid (4.03 g, 0.02 mol), 5-amino-1-ethylpyrazole (2.22 g, 0.02 mol), DMF (25 ml), K2CO3 (2.76 g, 0.02 mol) and Cu(OAc)2H2O (0.5 g) is refluxed for 24 hours. The reaction mixture is cooled to room temperature, poured into ice waterl and acidified with acetic acid to a pH of 5. A solid forms which is collected by filtration and dried to afford 3.8 g (68%) of N-(1-ethylpyrazol-5-yl)-5-nitroanthranilic acid.

1. temperatureis refluxed for 24 hours
2. additionpoured into ice waterl
3. filtrationA solid forms which is collected by filtration
4. customdried