Process for the preparation of 1,2-naphtho-quinonediazido-5-sulfonyl chloride

A process for preparing 1,2-naphthoquinonediazido-5-sulfonyl chloride which comprises reacting 1,2-naphthoquinonediazido-5-sulfonic acid or a salt thereof with phosgene in the presence of pyridine. According to this process, it is possible to prepare 1,2-naphthoquinonediazido-5-sulfonyl chloride in...

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Bibliographische Detailangaben
Hauptverfasser:	KAMEMOTO, KOICHI, HAGA, TORU, KAMODA, MASARU, OHISHI, TOSHIRO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A process for preparing 1,2-naphthoquinonediazido-5-sulfonyl chloride which comprises reacting 1,2-naphthoquinonediazido-5-sulfonic acid or a salt thereof with phosgene in the presence of pyridine. According to this process, it is possible to prepare 1,2-naphthoquinonediazido-5-sulfonyl chloride in a high yield with ease from 1,2-naphthoquinonediazido-5-sulfonic acid or a salt thereof.