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Sydnones as Masked Hydrazines for the Synthesis of 4-Arylazo-1,2-dihydro-pyrazol-3-one Derivatives.

✍ Scribed by Prashant S. Shinge; Prashant R. Latthe; Bharati V. Badami


Book ID
101981814
Publisher
John Wiley and Sons
Year
2005
Weight
14 KB
Volume
36
Category
Article
ISSN
0931-7597

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The correct synthesis of 2,3-dihydro-2-a
✍ Vittoria Colotta; Lucia Cecchi; Fabrizio Melani; Giovanna Palazzino; Guido Filac πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 French βš– 192 KB

The claimed synthesis of 2a from 2-methyl-3-chromonecarbonitrile is shown not to lead to%, as previously reported but to 1,4-dihydro-l-phenyl-3-methyl[l]benzopyrano~3,4-d]pyrazole-4-one IOa.