PROCESS FOR THE PREPARATION OF DYE INTERMEDIATES

A process for the preparation of compounds of the formula which is characterised in that a compound of the formula is reacted with a halogenating agent in the presence of a compound of the formula NA (2a> and in which the symbols have the meaning indicated in Claim 1, is described. The compounds...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VINCZE, JANOS, HERTER, WILFRIED
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES CHEMISTRY DYES HETEROCYCLIC COMPOUNDS LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES
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Beschreibung
Zusammenfassung:	A process for the preparation of compounds of the formula which is characterised in that a compound of the formula is reacted with a halogenating agent in the presence of a compound of the formula NA (2a> and in which the symbols have the meaning indicated in Claim 1, is described. The compounds obtainable by the process are useful coupling components for the synthesis of cationic dyes.