反应详情

14.05 g 2,3-diamino-5-nitropyridine and 9.68 g benzaldehyde in 250 ml nitrobenzene were heated to 140-150° C. for 15 hrs. The solvent is removed by vacuum distillation and the residue is dispersed in ethyl acetate, filtered, and the filter residue washed thoroughly with ethyl acetate.

1. customThe solvent is removed by vacuum distillation
2. additionthe residue is dispersed in ethyl acetate
3. filtrationfiltered
4. washthe filter residue washed thoroughly with ethyl acetate