FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to the improved method for preparing tetra-(2,3-quinolino)-porphyrazine. Method involves heating up of 2,3-dicyanoquinoline with compound of metal and the following acid demetallization of formed product. As metal compound the method involves using dry sodium hydroxide, 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 the method for preparing tetra-(2,3-quinolino)-porphyrazine by decreasing number of technological stages and to enhance the yield of the end product by 1.2-fold.
EFFECT: improved preparing method.
2 cl, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING TETRA-(2,3-QUINOXALINO)PORPHYRAZINE | 2004 |
|
RU2269530C1 |
| METHOD FOR PREPARING TETRA-(2,3-QUINOXALINO)-PORPHYRAZINE | 2005 |
|
RU2278135C1 |
| METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE | 2004 |
|
RU2269532C1 |
| METHOD FOR PREPARING TETRAPYRAZINOPORPHYRAZINE | 2004 |
|
RU2269536C1 |
| METHOD FOR PREPARING TETRAPYRAZINO-PORPHYRAZINE | 2005 |
|
RU2278136C1 |
| METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE | 2005 |
|
RU2278137C1 |
| METHOD FOR PREPARING TETRA-(5-TERTIARY-BUTYLPYRAZINO)-PORPHYRAZINE | 2004 |
|
RU2269535C1 |
| COPPER TETRA-(6-TERTIARY-BUTYL-2,3-QUINOLINO)PORPHYRAZINE AS DYEING SUBSTANCE OF OPTICAL FILTER | 2004 |
|
RU2269539C1 |
| METHOD FOR PREPARING TETRA-(4-TERTIARY-BUTYL)-PHTHALOCYANINE | 2004 |
|
RU2269531C1 |
| METHOD FOR PREPARING OCTA-(4,5-N-BUTYL)-PHTHALOCYANINE | 2005 |
|
RU2276153C1 |
