VERFAHREN ZUR REDUKTION VON NITROANTHRACHINONVERBINDUNGEN

The present invention concerns a novel process for the reduction of a nitro-anthraquinone compound of formula I: I wherein M IS AN INTEGER 1, 2 OR 3, AND N IS AN INTEGER 1, 2 OR 3, THE SUM OF M + N BEING 3, 4 OR 5, AND THE RINGS A and B are either further substituted or unsubstituted, TO THE CORRESP...

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Bibliographische Detailangaben
1. Verfasser:	BUECHELER,PAUL
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES CHEMISTRY DYES 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:	The present invention concerns a novel process for the reduction of a nitro-anthraquinone compound of formula I: I wherein M IS AN INTEGER 1, 2 OR 3, AND N IS AN INTEGER 1, 2 OR 3, THE SUM OF M + N BEING 3, 4 OR 5, AND THE RINGS A and B are either further substituted or unsubstituted, TO THE CORRESPONDING AMINO-ANTHRAQUINONE COMPOUND WHICH COMPRISES REACTING THE COMPOUND OF FORMULA I with hydrazine in aqueous medium. The resulting amino-anthraquinone compounds are in general known and are useful intermediates in the production of anthraquinone dyestuffs.