FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing zinc meso-tetra-aminotetrabenzoporphyrinate. The method involves reaction of a phthalic anhydride with aminoacetic acid to obtain N-carboxymethylphthalimide, from which while heating with zinc oxide, a zinc salt of N-carboxymethylphthalimide is obtained. The obtained salt reacts with phthalimide at high temperature from 240°C to 320°C for 2-2.5 hours, followed by treatment of the reaction mass with hydrazine hydrate in pyridine solution at boiling point thereof for 1.5-2 hours.
EFFECT: high safety of the process owing to prevention of formation of dangerous and toxic acetic and nitric acids, high cost-effectiveness of the process and obtaining an end product of high purity.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ZINC 5,15-DIAMINOTETRABENZOPORPHYNATE | 2011 |
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