Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1252892 | Arabian Journal of Chemistry | 2011 | 4 Pages |
Abstract
A four-component reaction of hydrazine hydrate or phenyl hydrazine, ethyl 3-alkyl-3-oxo propanoate, aldehydes and malononitrile has been achieved in the presence of nanosized magnesium oxide as a highly effective heterogeneous base catalyst to produce of 6-amino-3-alkyl-4-aryl-5-cyano-1,4-dihydropyrano[2,3-c]pyrazole derivatives in excellent yields and in a short experimental time. This method is simple and rapid for focusing a pyrano ring with a pyrazole ring.
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Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Maryam Babaie, Hassan Sheibani,