| 摘要 |
N,N'-dialkylphenylenediamines are prepared by the reductive alkylation of a nitroaniline and a ketone in the presence of hydrogen and a hydrogenation catalyst. The desired product may be obtained in a more economical way when effecting the process in a continuous manner by utilizing an organic solvent comprising an ether compound such as a monoether of a dihydric alcohol, a diether of a dihydric alcohol, or a cyclic diether.
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