Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
178053 | Dyes and Pigments | 2007 | 10 Pages |
Abstract
p-Substituted anilines were diazotized and coupled with 3-aminocrotononitrile, malononitrile, ethyl cyanoacetate or ethyl acetoacetate to give the 2-arylhydrazone-3-ketimino-butyronitriles, 2-arylhydrazonomalononitriles, ethyl 2-arylhydrazonocyanoacetates and ethyl 2-arylhydrazonoacetoacetates, respectively. Cyclization of these arylhydrazone derivatives with 5-amino-4-arylazo-3-methyl-1H-pyrazoles or 3,5-diamino-4-arylazo-1H-pyrazoles in pyridine moiety afforded the corresponding disazo pyrazolo[1,5-a]pyrimidine derivatives.
Related Topics
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Authors
Fikret Karcı, Aykut Demirçalı,