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ChemInform Abstract: 5-Aminopyrazoles from Enolizable Ketones and 1-Cyano-1-alkylhydrazines.

โœ Scribed by T. RYCKMANS; H.-G. VIEHE; J. FENEAU-DUPONT; B. TINANT; J.-P. DECLERCQ

Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
28
Category
Article
ISSN
0931-7597

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ChemInform Abstract: A Simple Synthesis
ChemInform Abstract: A Simple Synthesis of 1-Substituted 5-Aminopyrazoles and Pyrazolo[1,5-a]-s-triazine Derivative.
โœ Y. YAMADA; H. YASUDA; K. YOSHIZAWA ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 28 KB ๐Ÿ‘ 2 views

A Simple Synthesis of 1-Substituted 5-Aminopyrazoles and Pyrazolo[1,5-a]-s-triazine Derivative. -The title compounds (III) are synthesized directly by cyclization of hydrazine derivatives (II) with (E)-2,3-dicyano-butendioates (I) in the presence of organic salts. The reaction is assumed to proceed