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1,3-Disubstitutedpyrazole-4-caboxaldehyde in Heterocyclic Synthesis: A Novel Synthesis of Pyridine-2(1H)-thione and Fused Nitrogen and/or Sulfur Heterocyclic Derivatives

✍ Scribed by Elneairy, Mohamed


Book ID
111893018
Publisher
Taylor and Francis Group
Year
2010
Tongue
English
Weight
584 KB
Volume
185
Category
Article
ISSN
1042-6507

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## Abstract A new route for the synthesis of 3H‐1,2,4‐triazolo[1,5‐a]pyridines 7a–j, 12a,b, and 17a,b utilizing the reaction of the hydrazones of cyanoethanoic acid hydrazide 3a,b with ylidene malononitriles 2a–e, malononitrile, and 3‐aminocrotononitrile is described.