METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE

FIELD: chemical industry, organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to methods for synthesis of tetrapyrrole macroheterocyclic compounds. Method for synthesis of tetra-(5-tert.-butylpyrazino)-porphyrazine is carried out by heating 5-tert.-butyl-2,3-dicyanopyrazine to tem...

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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-(5-tert.-butylpyrazino)-porphyrazine is carried out by heating 5-tert.-butyl-2,3-dicyanopyrazine to temperature 210-220°C and keeping the formed melt at this temperature for 25-35 min. Invention provides the significant simplifying and reducing cost of the method by diminishing number of technological procedures with simultaneous enhancing yield of the end product above 6 times. ^ EFFECT: improved preparing method.