| 摘要 |
FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to the improved method for preparing tetra-(5-tert.-butylpyrazino)-porphyrazine. Method involves boiling 5-tert.-butyl-2,3-dicyanopyrazine in alkaline metal compound solution and the following acid demetallization of formed product. As alkaline metal compound solution the method involves using sodium hydroxide 40-60% aqueous solution. Invention provides simultaneous significant simplifying and reducing cost of the method for preparing tetra-(5-tert.-butylpyrazino)-porphyrazine by decreasing number of technological stages by 2 times and to enhance the yield of the end product by 2-fold. ^ EFFECT: improved preparing method. ^ 2 cl, 1 tbl, 1 ex |
