VERFAHREN ZUR HALOGNIERUNG VON AROMATISCHEN VERBINDUNGEN

VERFAHREN ZUR HALOGNIERUNG VON AROMATISCHEN VERBINDUNGEN

A method for halogenating an aromatic compound, which comprises reacting the aromatic compound of the formula (I): wherein X is a hydroxyl group, an amino group or an acylamino group, each of Z1 and Z2 is a hydrogen atom or a halogen atom, one of R and Y is a hydrogen atom and the other is a nitro g...

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Hauptverfasser: NASU, RIKUO, HAMAGUCHI, MOTOHIKO, ARIYOSHI, HAYATO
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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creator NASU, RIKUO
HAMAGUCHI, MOTOHIKO
ARIYOSHI, HAYATO
description A method for halogenating an aromatic compound, which comprises reacting the aromatic compound of the formula (I): wherein X is a hydroxyl group, an amino group or an acylamino group, each of Z1 and Z2 is a hydrogen atom or a halogen atom, one of R and Y is a hydrogen atom and the other is a nitro group, a cyano group or a trifluoromethyl group, and Q is a nitrogen atom or -C(T)= (wherein T is a hydrogen atom, a halogen atom, a nitro group, a cyano group or a trifluoromethyl group), with a halogenating agent to obtain a 3-halogenoaromatic compound of the formula (II): wherein one of R' and Y' is a halogen atom and the other is a nitro group, a cyano group or a trifluoromethyl group, and X, Z1, Z2 and Q are as defined above, wherein the aromatic compound of the formula (I) is reacted with a halogenating agent to form a halogenoaromatic compound of the formula (III): wherein E is -O-Hal or (wherein A is a hydrogen atom or an acyl group, and Hal is a halogen atom), and Z1, Z2, R, Y and Q are as defined above, and this halogenoaromatic compound of the formula (III) is subjected to a rearrangement reaction in the presence of a proton donor to form the 3-halogenoaromatic compound of the formula (II).
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HAMAGUCHI, MOTOHIKO ; ARIYOSHI, HAYATO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_ATE140217TT13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>ger</language><creationdate>1996</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMISTRY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>NASU, RIKUO</creatorcontrib><creatorcontrib>HAMAGUCHI, MOTOHIKO</creatorcontrib><creatorcontrib>ARIYOSHI, HAYATO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NASU, RIKUO</au><au>HAMAGUCHI, MOTOHIKO</au><au>ARIYOSHI, HAYATO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>VERFAHREN ZUR HALOGNIERUNG VON AROMATISCHEN VERBINDUNGEN</title><date>1996-07-15</date><risdate>1996</risdate><abstract>A method for halogenating an aromatic compound, which comprises reacting the aromatic compound of the formula (I): wherein X is a hydroxyl group, an amino group or an acylamino group, each of Z1 and Z2 is a hydrogen atom or a halogen atom, one of R and Y is a hydrogen atom and the other is a nitro group, a cyano group or a trifluoromethyl group, and Q is a nitrogen atom or -C(T)= (wherein T is a hydrogen atom, a halogen atom, a nitro group, a cyano group or a trifluoromethyl group), with a halogenating agent to obtain a 3-halogenoaromatic compound of the formula (II): wherein one of R' and Y' is a halogen atom and the other is a nitro group, a cyano group or a trifluoromethyl group, and X, Z1, Z2 and Q are as defined above, wherein the aromatic compound of the formula (I) is reacted with a halogenating agent to form a halogenoaromatic compound of the formula (III): wherein E is -O-Hal or (wherein A is a hydrogen atom or an acyl group, and Hal is a halogen atom), and Z1, Z2, R, Y and Q are as defined above, and this halogenoaromatic compound of the formula (III) is subjected to a rearrangement reaction in the presence of a proton donor to form the 3-halogenoaromatic compound of the formula (II).</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
title VERFAHREN ZUR HALOGNIERUNG VON AROMATISCHEN VERBINDUNGEN
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