• Title/Summary/Keyword: 1,3,5-Trisubstituted pyrazoles

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Facile One-Pot Synthesis of 1,3,5-Trisubstituted Pyrazoles from α,β-Enones

  • Yu, Jin;Kim, Ko Hoon;Moon, Hye Ran;Kim, Jae Nyoung
    • Bulletin of the Korean Chemical Society
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    • v.35 no.6
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    • pp.1692-1696
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    • 2014

  • A practical and efficient one-pot synthesis of 1,3,5-trisubstituted pyrazoles from ${\alpha},{\beta}$-enones and arylhydrazine hydrochlorides has been developed. The pyrazoles were formed via a tandem formation of the corresponding pyrazolines and an acid-catalyzed aerobic oxidation process.

  • https://doi.org/10.5012/bkcs.2014.35.6.1692 인용 PDF KSCI KPUBS HTML

Aromatization of 1,3,5-Trisubstituted of 4,5-Dihydro-1H-Pyrazoles by In-Situ Generation of I+ from Hydrogen Peroxide/Acids/Iodide Potassium or Sodium Systems

  • Maleki, Behrooz;Veisi, Hojat
    • Bulletin of the Korean Chemical Society
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    • v.32 no.12
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    • pp.4366-4370
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    • 2011

  • A simple, green and cost-effective protocol was used for the aromatization of 1,3,5-trisubstituted-2-pyrazolines to the corresponding pyrazoles by in situ generation of iodine ($I^+$) from $H_2O_2$/AcOH or SSA or oxalic acid /KI or NaI system under thermal condition with moderate to good yields.

  • https://doi.org/10.5012/bkcs.2011.32.12.4366 인용 PDF KSCI