VERFAHREN ZUR HERSTELLUNG VON 2.3DICHLORTHIOPHEN

1. A process for preparing 2,3-dichlorothiophene, which comprises isomerizing 2-chlorothiophene with a catalyst to 3-chlorothiophene and subsequently chlorinating this 3-chlorothiophene between 40 and 120 degrees C to give 2,3-dichlorothiophene, the chlorine : 3-chlorothiophene ratio being 0.3 : 1 t...

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Bibliographische Detailangaben
Hauptverfasser:	LEUPOLD, ERNST INGO, LITTERER, HEINZ
Format:	Patent
Sprache:	ger
Schlagworte:	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
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Zusammenfassung:	1. A process for preparing 2,3-dichlorothiophene, which comprises isomerizing 2-chlorothiophene with a catalyst to 3-chlorothiophene and subsequently chlorinating this 3-chlorothiophene between 40 and 120 degrees C to give 2,3-dichlorothiophene, the chlorine : 3-chlorothiophene ratio being 0.3 : 1 to 1.1 : 1 (mol/mol).