| 摘要 |
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. |
