反应详情

To a solution of 25 g. of 2-chloro-5-nitro-benzoic acid in 125 ml. of n-pentyl alcohol add 4.8 g. of sodium hydroxide pellets, 25 g. of 2-methyl-3-trifluoromethylaniline and 2 g. of copper powder. With constant stirring, reflux the reaction mixture for 18 hours. Concentrate the mixture to one half volume and dilute with water and ether. Acidify the aqueous layer to obtain a crude product which is recrystallized to yield 5-nitro-N-(2-methyl-3-trifluoromethylphenyl) anthranilic acid, m.p. 244°-245° C.

1. temperatureWith constant stirring, reflux the reaction mixture for 18 hours
2. concentrationConcentrate the mixture to one half volume
3. additiondilute with water and ether
4. customto obtain a crude product which
5. customis recrystallized