FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing 6-antipyryl-9-aroyl-8-hydroxy-2-imino-1,3-diphenyl-1,3,6-triazaspiro[4.4]non-8-ene-4,7-diones of general formula (I), where Ar denotes Ph(a), 4-ClC6H4(b), 4-BrC6H4(c), 4-MeC6H4(d) or 4-MeOC6H4(e). Method involves reaction of 1-aryl-4-aroyl-5-methoxycarbonyl-1H-pyrrole-2,3-diones (1a-e), specified in the formula of invention, with 1,3-diphenylguanidine, taken in ratio 1:1, at temperature for 10–15 minutes while boiling in anhydrous toluene according to the scheme specified in the formula of invention.
EFFECT: obtaining compounds of class of 6-antipyryl-9-aroyl-8-hydroxy-2-imino-1,3-diphenyl-1,3,6-triazaspiro[4.4]non-8-ene-4,7-diones.
1 cl, 5 ex
(I)
| Title |
Year |
Author |
Number |
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|
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- Tretiakov Nikita Alekseevich
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