FIELD: chemical industry, organic chemistry, chemical technology.
SUBSTANCE: invention relates to the improved method for preparing tetrapyrrole macroheterocyclic compounds, namely, tetra-(5-tert.-butylpyrazino)-porphyrazine. Method involves heating up 5-tert.-butyl-2,3-dicyanopyrazine with compound of alkaline metal and the following acid demetallization of formed product. As compound of alkaline metal method involves using dry sodium hydroxide and heating up is carried out to temperature 200-220°C and formed melt is kept at this temperature for 10-15 min. Invention provides simultaneous significant simplifying and decreasing cost of the method for preparing tetra-(5-tert.-butylpyrazino)-porphyrazine by diminishing number of stages and to enhance the yield of the end product by 6.5-fold.
EFFECT: improved preparing method.
2 cl, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE | 2004 |
|
RU2269535C1 |
| 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-(4-TERTIARY-BUTYL)-PHTHALOCYANINE | 2004 |
|
RU2269531C1 |
| METHOD FOR PREPARING OCTA-(4,5-N-BUTYL)-PHTHALOCYANINE | 2005 |
|
RU2276153C1 |
| METHOD FOR PREPARING TETRA-(2,3-QUINOXALINO)-PORPHYRAZINE | 2005 |
|
RU2278135C1 |
| METHOD FOR PREPARING PHTHALOCYANINE | 2004 |
|
RU2269533C1 |
| METHOD FOR PREPARING TETRA-(2,3-QUINOLINO)-PORPHYRAZINE | 2004 |
|
RU2269534C1 |
