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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 6, 1976 - Issue 1
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Original Articles

Synthesis of Pyrazoles by the Condensation of C(α)- and Trianions with Esters

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Pages 5-10 | Published online: 05 Dec 2006

References

  • To whom inquiries should be addressed
  • Foote , R. S. , Beam , C. F. and Hauser , C. R. 1970 . J. Heterocycl. Chem. , 7 : 589
  • Beam , C. F. , Foote , R. S. and Hauser , C. R. 1971 . J. Chem. Soc., C , : 1678
  • CAUTION Many methylhydrazones are unstable and may violently decompose. Distilled oils were kept in a refrigerator, and solids should be used immediately. It is recommended that small amounts of materials be prepared immediately before use. For example, 10 g. of ketone, 10 ml. of methylhydrazine, 30–40 ml. of 95% ethanol, and 2 ml. of glacial acetic acid were heated under reflux for 1 hr. The solids were recrystallized from 95% ethanol, and oils were distilled under reduced pressure
  • 1967 . “ Chapter 3 ” . In The Chemistry of Heterocyclic Compounds , Vol. 22 , New York, N Y. : R. L. Wiley and Sons, Inc. .
  • Panizzi , L. and Sbrillo‐Siena , M. 1943 . Gazz. chim. ital. , 73 : 335

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