反应详情

69 g (mol/2) of o-nitroaniline in solution in 270 ml of tetrahydrofuran are heated under reflux for 2 hours with 67 g (1 mol) of methacrylonitrile and 16 ml of a 40% solution of "Triton B" in methanol. After evaporation of the volatile substances under vacuum, washing the residue with water and then extraction with ethyl acetate, and after evaporation of the solvent, a yellow solid of melting point 44°-47° C. is obtained in a yield of 51.3 g = 50% (theoretical yield: 102.6 g). After recrystallisation from isopropanol and then from ethanol, there is obtained a yellow product of melting point 75°-76° C.

1. customAfter evaporation of the volatile substances under vacuum
2. washwashing the residue with water
3. extractionextraction with ethyl acetate
4. customafter evaporation of the solvent
5. customa yellow solid of melting point 44°-47° C. is obtained in a yield of 51.3 g = 50% (theoretical yield: 102.6 g)
6. customAfter recrystallisation from isopropanol
7. customfrom ethanol, there is obtained a yellow product of melting point 75°-76° C.