Process for the alkylation of 3,4-dihydroxythiophene-2,5-dicarboxylic esters

Process for the alkylation of 3,4-dihydroxythiophene-2,5-dicarboxylic esters

The invention related to a process for the alkylation of 3,4-dihydroxythiophene-2, 5-dicarboxylic esters or their alkali metal or alkaline earth metal slats in the presence of organic onium salts.

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Bibliographische Detailangaben
Hauptverfasser: SCHENKEL, RALFO, KLAUSENER, ALEXANDER, WINKLER, ADOLF, BERMEN, JOSEF, RAUCHSCHWALBE, GUNTER
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention related to a process for the alkylation of 3,4-dihydroxythiophene-2, 5-dicarboxylic esters or their alkali metal or alkaline earth metal slats in the presence of organic onium salts.