Process for preparing a thioether compound

The invention provides a process for preparing a coupler compound having a thioether group at the coupling site comprising reacting in the presence of a base (a) a coupler compound having at least one hydrogen at the coupling site with (b) a mixed disulfide comprising either a tetrazole group or an...

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Bibliographic Details
Main Author POTENZA; JOAN C
Format Patent
LanguageEnglish
Published 17.02.1998
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
AUXILIARY PROCESSES IN PHOTOGRAPHY
CHEMISTRY
CINEMATOGRAPHY
ELECTROGRAPHY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
HOLOGRAPHY
METALLURGY
ORGANIC CHEMISTRY
PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES
PHOTOGRAPHY
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES
PHYSICS
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Summary:The invention provides a process for preparing a coupler compound having a thioether group at the coupling site comprising reacting in the presence of a base (a) a coupler compound having at least one hydrogen at the coupling site with (b) a mixed disulfide comprising either a tetrazole group or an oxadiazole group linked to one sulfur atom and an alkyl or aryl group linked to the other sulfur atom.
Bibliography:Application Number: US19970829910