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
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE | 2004 |
|
RU2269532C1 |
| METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE | 2005 |
|
RU2278137C1 |
| METHOD FOR PREPARING TETRAPYRAZINOPORPHYRAZINE | 2004 |
|
RU2269536C1 |
| METHOD FOR PREPARING TETRAPYRAZINO-PORPHYRAZINE | 2005 |
|
RU2278136C1 |
| METHOD FOR PREPARING TETRA-(2,3-QUINOXALINO)PORPHYRAZINE | 2004 |
|
RU2269530C1 |
| METHOD FOR PREPARING TETRA-(2,3-QUINOXALINO)-PORPHYRAZINE | 2005 |
|
RU2278135C1 |
| METHOD FOR PREPARING TETRA-(4-TERTIARY-BUTYL)-PHTHALOCYANINE | 2004 |
|
RU2269531C1 |
| METHOD FOR PREPARING OCTA-(4,5-N-BUTYL)-PHTHALOCYANINE | 2005 |
|
RU2276153C1 |
| METHOD FOR PREPARING PHTHALOCYANINE | 2004 |
|
RU2269533C1 |
| METHOD FOR PREPARING TETRA-(2,3-QUINOLINO)-PORPHYRAZINE | 2004 |
|
RU2269534C1 |
