反应详情

温度

80 °C

To a solution of 76.6 g (0.455 mol) of 2,4-dimethyl-5-nitroaniline and 64 ml (0.46 mol) triethylamine in 500 ml abs. tetrahydrofurane is added dropwise within 1 h 47.2 g (0.455 mol) cyanoacetyl chloride in 100 ml tetrahydrofurane. After stirring for 2 h at 25° C. and 3 h at 80° C. and cooling to 25° C. the reaction mixture is filtered and poured into water. The precipitate is separated, washed with water and toluene/petrolether and dried. Yield: 84 g (78%) N-cyanoacetyl-2,4-dimethyl-5-nitroaniline, mp. 229°-230° C.

1. temperaturecooling to 25° C. the reaction mixture
2. filtrationis filtered
3. additionpoured into water
4. customThe precipitate is separated
5. washwashed with water and toluene/petrolether
6. customdried