DIOXAPENTACENE DERIVATIVE AND OPTICAL RECORDING MEDIUM USING THE DERIVATIVE

NEW MATERIAL:A compound of formula I {X, Y are C(CN)2; rings A-D are benzene, naphthalene rings where at least one among A and B or C and D is naphthalene ring]. EXAMPLE:The compound of formula II. USE:An optical recording medium which can record utilizing change of state of the substance caused by...

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Bibliographische Detailangaben
Hauptverfasser:	HIRAKAWA SEIICHI, MAEDA SHUICHI, KIMURA YUKIYO
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY COLOUR PRINTING ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LINING MACHINES METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	NEW MATERIAL:A compound of formula I {X, Y are C(CN)2; rings A-D are benzene, naphthalene rings where at least one among A and B or C and D is naphthalene ring]. EXAMPLE:The compound of formula II. USE:An optical recording medium which can record utilizing change of state of the substance caused by the light energy of oscillation wavelength from a semiconductor laser. PREPARATION:The condensation reaction between an anthrone compound of formula III or IV and p-benzoquinone of formula V is carried out in chlorobenzene to give a compound of formula VI. The product is allowed to react with malonitrile of formula VII in the presence of titanium tetrachloride in chloroform.