METHOD FOR PREPARING TETRA-(2,3-QUINOXALINO)-PORPHYRAZINE

FIELD: chemical industry, organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to methods for synthesis of tetrapyrrole macroheterocyclic compounds. Method for synthesis of tetra-(2,3-quinoxalino)-porphyrazine is carried out by heating 2,3-dicyanoquinoxaline to temperature 210-220°...

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Hauptverfasser:	KUDRIK EVGENIJ VALENTINOVICH, KORZHENEVSKIJ ANDREJ BRONISLAVOVICH, KOJFMAN OSKAR IOSIFOVICH, EFIMOVA SVETLANA VALENTINOVNA, SHAPOSHNIKOV GENNADIJ PAVLOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ADHESIVES CHEMISTRY DYES LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES
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Beschreibung
Zusammenfassung:	FIELD: chemical industry, organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to methods for synthesis of tetrapyrrole macroheterocyclic compounds. Method for synthesis of tetra-(2,3-quinoxalino)-porphyrazine is carried out by heating 2,3-dicyanoquinoxaline to temperature 210-220°C and keeping the formed melt at this temperature for 25-35 min. Invention provides simplifying the method due to diminishing number of technological procedures with simultaneous enhancing the yield of the end product by 1.5-fold. ^ EFFECT: improved preparing method. ^ 1 tbl