Verfahren zur Herstellung von Isobenzofurandionen
Prepn. of a isobenzofurandione cpd. (I) comprises catalytic dehydrogenation of a distilled tetrahydroisobenzofurandione cpd. (II) at elevated temp. in the presence of a supported palladium and/or platinum catalyst and maleic and fumaric acid derivs. (III) in a trickling or sump phase process at 120-...
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| creator | KAESBAUER, JOSEF. DR., 42929 WERMELSKIRCHEN, DE FIEGE, HELMUT. DR., 51373 LEVERKUSEN, DE |
| description | Prepn. of a isobenzofurandione cpd. (I) comprises catalytic dehydrogenation of a distilled tetrahydroisobenzofurandione cpd. (II) at elevated temp. in the presence of a supported palladium and/or platinum catalyst and maleic and fumaric acid derivs. (III) in a trickling or sump phase process at 120-300 degrees C. In the sump phase process, the temp. is allowed to rise at a rate of 0.6-3 degrees C/min above 80-110 degrees C. |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | Verfahren zur Herstellung von Isobenzofurandionen |
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