PRODUCTION OF DIOXAZINE COMPOUND

PURPOSE:To obtain the titled compound useful as dyes, pigments, etc. by using a small amount of a reaction promoter at a low cost, by subjecting a specific benzoquinone derivative to cyclization reaction while heating in an inert organic solvent in the presence of an inorganic acid, etc. CONSTITUTIO...

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Hauptverfasser:	KASHIWANE YUTAKA, FUJITA TAIRA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
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creator	KASHIWANE YUTAKA FUJITA TAIRA
description	PURPOSE:To obtain the titled compound useful as dyes, pigments, etc. by using a small amount of a reaction promoter at a low cost, by subjecting a specific benzoquinone derivative to cyclization reaction while heating in an inert organic solvent in the presence of an inorganic acid, etc. CONSTITUTION:A compound expressed by formula I (R represents 1-4C alkyl) [example; 2,5-dichloro-3,6-bis(9-ethyl-3-carbazolylamino)-1,4-benzoqu-inone, etc.] is cyclized in an inert organic solvent (preferably chlorobenzene, dichlorobenzene, trichlorobenzene or nitrobenzene, or alkylbenzene with >=110 deg.C boiling point) in the presence of an inorganic acid (preferably hydrochloric acid or sulfuric acid) or both the inorganic acid and an oxidizing agent (preferably p- benzoquinone, etc.) while heating preferably at 110-200 deg.C to obtain the aimed compound expressed by formula II (X, and X2 represent H or Cl).
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2,5-dichloro-3,6-bis(9-ethyl-3-carbazolylamino)-1,4-benzoqu-inone, etc.] is cyclized in an inert organic solvent (preferably chlorobenzene, dichlorobenzene, trichlorobenzene or nitrobenzene, or alkylbenzene with >=110 deg.C boiling point) in the presence of an inorganic acid (preferably hydrochloric acid or sulfuric acid) or both the inorganic acid and an oxidizing agent (preferably p- benzoquinone, etc.) while heating preferably at 110-200 deg.C to obtain the aimed compound expressed by formula II (X, and X2 represent H or Cl).</description><language>eng</language><subject>CHEMISTRY ; HETEROCYCLIC COMPOUNDS ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>1987</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19871202&DB=EPODOC&CC=JP&NR=S62277388A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19871202&DB=EPODOC&CC=JP&NR=S62277388A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KASHIWANE YUTAKA</creatorcontrib><creatorcontrib>FUJITA TAIRA</creatorcontrib><title>PRODUCTION OF DIOXAZINE COMPOUND</title><description>PURPOSE:To obtain the titled compound useful as dyes, pigments, etc. by using a small amount of a reaction promoter at a low cost, by subjecting a specific benzoquinone derivative to cyclization reaction while heating in an inert organic solvent in the presence of an inorganic acid, etc. CONSTITUTION:A compound expressed by formula I (R represents 1-4C alkyl) [example; 2,5-dichloro-3,6-bis(9-ethyl-3-carbazolylamino)-1,4-benzoqu-inone, etc.] is cyclized in an inert organic solvent (preferably chlorobenzene, dichlorobenzene, trichlorobenzene or nitrobenzene, or alkylbenzene with >=110 deg.C boiling point) in the presence of an inorganic acid (preferably hydrochloric acid or sulfuric acid) or both the inorganic acid and an oxidizing agent (preferably p- benzoquinone, etc.) while heating preferably at 110-200 deg.C to obtain the aimed compound expressed by formula II (X, and X2 represent H or Cl).</description><subject>CHEMISTRY</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1987</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAICPJ3CXUO8fT3U_B3U3Dx9I9wjPL0c1Vw9vcN8A_1c-FhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfFeAcFmRkbm5sYWFo7GxKgBABTyIoE</recordid><startdate>19871202</startdate><enddate>19871202</enddate><creator>KASHIWANE YUTAKA</creator><creator>FUJITA TAIRA</creator><scope>EVB</scope></search><sort><creationdate>19871202</creationdate><title>PRODUCTION OF DIOXAZINE COMPOUND</title><author>KASHIWANE YUTAKA ; 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2,5-dichloro-3,6-bis(9-ethyl-3-carbazolylamino)-1,4-benzoqu-inone, etc.] is cyclized in an inert organic solvent (preferably chlorobenzene, dichlorobenzene, trichlorobenzene or nitrobenzene, or alkylbenzene with >=110 deg.C boiling point) in the presence of an inorganic acid (preferably hydrochloric acid or sulfuric acid) or both the inorganic acid and an oxidizing agent (preferably p- benzoquinone, etc.) while heating preferably at 110-200 deg.C to obtain the aimed compound expressed by formula II (X, and X2 represent H or Cl).</abstract><oa>free_for_read</oa></addata></record>
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subjects	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
title	PRODUCTION OF DIOXAZINE COMPOUND
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