反应详情

温度

80 °C

10.14 mL (86.5 mmol) N-Methyl-o-phenylenediamine and 13.08 g (86.5 mmol) 4-(methylamino)benzoic acid are stirred in 70.0 g polyphosphoric acid at 200° C. for 3 hours. The mixture is cooled to 80° C., poured into water and stirred over night at RT. The mixture is alkalinized with sodium hydroxide solution. The precipitate is filtered off and washed with water. The product is dried in vacuo at 50° C.

1. filtrationThe precipitate is filtered off
2. washwashed with water
3. customThe product is dried in vacuo at 50° C.