Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them
There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: wherein: R, X, R1 and Y are defined herein...
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| creator | KIM CHANG KYU DEBELLIS FRANCESCO HOKE DAVID ROMANET ROBERT FOGG POTENZA JOAN CHRISTINE |
| description | There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: wherein: R, X, R1 and Y are defined herein. The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order. |
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The intermediates are low molecular weight compounds represented by the structure: wherein: R, X, R1 and Y are defined herein. The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.</description><edition>6</edition><language>eng</language><subject>ADHESIVES ; AUXILIARY PROCESSES IN PHOTOGRAPHY ; CHEMISTRY ; CINEMATOGRAPHY ; DYES ; ELECTROGRAPHY ; HETEROCYCLIC COMPOUNDS ; HOLOGRAPHY ; LAKES ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; MORDANTS ; NATURAL RESINS ; ORGANIC CHEMISTRY ; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES ; PAINTS ; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES ; PHOTOGRAPHY ; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES ; PHYSICS ; POLISHES</subject><creationdate>1999</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=19991109&DB=EPODOC&CC=US&NR=5981760A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19991109&DB=EPODOC&CC=US&NR=5981760A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KIM; CHANG KYU</creatorcontrib><creatorcontrib>DEBELLIS; FRANCESCO</creatorcontrib><creatorcontrib>HOKE; DAVID</creatorcontrib><creatorcontrib>ROMANET; ROBERT FOGG</creatorcontrib><creatorcontrib>POTENZA; JOAN CHRISTINE</creatorcontrib><title>Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them</title><description>There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: wherein: R, X, R1 and Y are defined herein. The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.</description><subject>ADHESIVES</subject><subject>AUXILIARY PROCESSES IN PHOTOGRAPHY</subject><subject>CHEMISTRY</subject><subject>CINEMATOGRAPHY</subject><subject>DYES</subject><subject>ELECTROGRAPHY</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>HOLOGRAPHY</subject><subject>LAKES</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>MORDANTS</subject><subject>NATURAL RESINS</subject><subject>ORGANIC CHEMISTRY</subject><subject>ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES</subject><subject>PAINTS</subject><subject>PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES</subject><subject>PHOTOGRAPHY</subject><subject>PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES</subject><subject>PHYSICS</subject><subject>POLISHES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1999</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFjL0KwkAQhNNYiPoM7gMoKOJfKaJordZhuWyS0-R22b0U-vRewN5mhmHmm2Em1xBJWyo8RjIoWSHWBKIkqBg9B-AS5K344YZ7SWXNkStFqb0Dx500pDZLDDsySy-JaPHlQwUYCsDi2VnsU3pux9mgxMZo8vNRNj2f7sfLnIRzMkFHgWL-uK33u-V2szis_i--8vNDwg</recordid><startdate>19991109</startdate><enddate>19991109</enddate><creator>KIM; CHANG KYU</creator><creator>DEBELLIS; FRANCESCO</creator><creator>HOKE; DAVID</creator><creator>ROMANET; ROBERT FOGG</creator><creator>POTENZA; JOAN CHRISTINE</creator><scope>EVB</scope></search><sort><creationdate>19991109</creationdate><title>Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them</title><author>KIM; CHANG KYU ; DEBELLIS; FRANCESCO ; HOKE; DAVID ; ROMANET; ROBERT FOGG ; POTENZA; JOAN CHRISTINE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5981760A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1999</creationdate><topic>ADHESIVES</topic><topic>AUXILIARY PROCESSES IN PHOTOGRAPHY</topic><topic>CHEMISTRY</topic><topic>CINEMATOGRAPHY</topic><topic>DYES</topic><topic>ELECTROGRAPHY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>HOLOGRAPHY</topic><topic>LAKES</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>MORDANTS</topic><topic>NATURAL RESINS</topic><topic>ORGANIC CHEMISTRY</topic><topic>ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES</topic><topic>PAINTS</topic><topic>PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES</topic><topic>PHOTOGRAPHY</topic><topic>PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES</topic><topic>PHYSICS</topic><topic>POLISHES</topic><toplevel>online_resources</toplevel><creatorcontrib>KIM; CHANG KYU</creatorcontrib><creatorcontrib>DEBELLIS; FRANCESCO</creatorcontrib><creatorcontrib>HOKE; DAVID</creatorcontrib><creatorcontrib>ROMANET; ROBERT FOGG</creatorcontrib><creatorcontrib>POTENZA; JOAN CHRISTINE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KIM; CHANG KYU</au><au>DEBELLIS; FRANCESCO</au><au>HOKE; DAVID</au><au>ROMANET; ROBERT FOGG</au><au>POTENZA; JOAN CHRISTINE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them</title><date>1999-11-09</date><risdate>1999</risdate><abstract>There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: wherein: R, X, R1 and Y are defined herein. The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY DYES ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS POLISHES |
| title | Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them |
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