VERFAHREN ZUR HERSTELLUNG VON ORTHO-PHENYLENDIAMIN

The preparation of o- phenylenediamine by hydrogenation of compounds of the general formula (I> in which X stands for hydrogen or chlorine, in the presence of a hydrogenation catalyst, is characterized in that hydrogenation is performed in the presence of 30 to 70% of ammonia and 10 to 50% of wat...

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Main Authors TROCSANYI, ZENO, HURTAK, ELEMER, KISGERGELY, LAJOS, HAMMERLI, PETER, VARGA, ZSOLT, JELEN, SANDOR, KINCSES, GYULA, CSIKOS, REZSO, BATHORY, JOZSEF
Format Patent
LanguageGerman
Published 27.03.1986
Edition4
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The preparation of o- phenylenediamine by hydrogenation of compounds of the general formula (I> in which X stands for hydrogen or chlorine, in the presence of a hydrogenation catalyst, is characterized in that hydrogenation is performed in the presence of 30 to 70% of ammonia and 10 to 50% of water. In this manner the use of inflammable solvents can be avoided, the ammonium chloride by- product can easily be eliminated and made use of, and as a starting material the reaction mixture obtained by the amination of the compounds of the general formula (II> wherein X has the same meaning as defined above, which contains the compounds of the general formula (I) can be directly used, without the isolation of the compounds of formula (I).
Bibliography:Application Number: CH19830002553