| 摘要 |
<p>With a far shorter reaction time, azeotropic distillation of the water in the condensation of 4-nitrohalogenobenzenes and primary aromatic amines or formyl derivatives thereof in the presence of potassium carbonate and, if appropriate, copper compounds can be dispensed with if the reaction is carried out in the presence of Al metal, Mg metal or Zn metal or mixtures or alloys of these metals.</p> |
