反应详情

温度

135 °C

A mixture of 2-bromoterephthalic acid (4.8 g, 0.02 mol), DME (50 ml), Cu(OAc)2 (0.2 g), 5-amino-1-ethylpyrazole (2.22 g, 0.02 mol) and K2CO3 (2.71 g, 0.02 mol) is heated at 135° C. overnight, then at reflux overnight. The reaction mixture is poured into water, acidified with acetic acid and the precipitate which forms is collected by filtration and dried to afford 2.5 g of N-(1-ethylpyrazol-5-yl)-4-carboxyanthranilic acid.

1. temperatureat reflux overnight
2. filtrationthe precipitate which forms is collected by filtration
3. customdried