反应详情

4-n-Butyl-2-nitroaniline (12.5 g, 0.065 mole), platinum oxide (0.75 g) and ethanol (125 ml) were mixed together and shaken in an atmosphere of hydrogen at atmospheric pressure and laboratory temperature. After six hours 5.2 liters of hydrogen had been absorbed. The mixture was filtered and ethanol removed from the filtrate by distillation. Benzene (40 ml) was added to the residual oil and this was then also removed by distillation. The crude 4-n-butyl-1,2-phenylenediamine thus obtained was used directly in the preparation of 1,2-bis-(3-methoxycarbonyl-2-thioureiddo)-4-n-butylbenzene.

1. customAfter six hours 5.2 liters of hydrogen had been absorbed
2. filtrationThe mixture was filtered
3. customethanol removed from the filtrate by distillation
4. additionBenzene (40 ml) was added to the residual oil
5. customthis was then also removed by distillation