反应详情

20 g of 2,6-Dibromo-4-nitroaniline are taken up in 250 ml of ethanol, 250 ml of ethyl acetate, 100 ml of dimethylformamide and 90 ml of methylene chloride and, after addition of 3.3 g of 5% moist platinum/active carbon catalyst, hydrogenated at room temperature under 50 psi for one hour. The solvent is then distilled off in a rotary evaporator, and the residue is triturated with diethyl ether, filtered off with suction and washed several times with petroleum ether.

1. distillationThe solvent is then distilled off in a rotary evaporator
2. customthe residue is triturated with diethyl ether
3. filtrationfiltered off with suction
4. washwashed several times with petroleum ether