Chemistry of Heterocyclic Compounds p. 1004 - 1005 (1992)
Update date:2022-08-28
Topics:
Perevalov, V. P.
Baryshnenkova, L. I.
Tsoi, K. S.
In the reaction of 3(5)-amino-5(3)-methylpyrazole with 1-nitroanthraquinone-2-carboxylic acid in sulfolane at 150 deg C, 2-methylpyrazolo<5,1-b>naphtho<2,3-h>quinazoline-5,10.13-trione is formed with an admixture of 1-aminoanthraquinone-2-carboxylic acid and 1-aminoanthraquinone.Under similar conditions, from 4-amino-1,5-dimethylpyrazole, only 1-(1,5-dimethyl-4-pyrazolylamino)anthraquinone-2-carboxylic acid is formed.
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Doi:10.1016/S0040-4039(01)86615-6
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