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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Hauptverfasser: KAMEMOTO, KOICHI, HAGA, TORU, KAMODA, MASARU, OHISHI, TOSHIRO
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creator KAMEMOTO, KOICHI
HAGA, TORU
KAMODA, MASARU
OHISHI, TOSHIRO
description 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.
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subjects 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
title Process for the preparation of 1,2-naphtho-quinonediazido-5-sulfonyl chloride
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