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ChemInform Abstract: Reactions of Chlorocarbonyl Isocyanate with 5-Aminopyrazoles and Active Methylene Nitriles: A Novel Synthesis of Pyrazolo[1,5-a]-1,3,5-triazines and Barbiturates.

โœ Scribed by Galal H. Elgemeie; Samia R. El-Ezbawy; Hany A. Ali


Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
33
Category
Article
ISSN
0931-7597

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ChemInform Abstract: A Simple Synthesis
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