Fused heterocycles 9 synthesis of tricyclic pyrazolines by the reaction of E-3-arylideneflavanones with phenylhydrazine

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Abstract

Stereoselective synthesis of trans,trans-2,3,3a,4-tetrahydro-3-aryl-2,4-diphenyl[l]benzopyrano[4,3-c] pyrazoles 13-24 have been performed by the reaction of E-3-arylideneflavanones 1-12 with phenylhydrazine in hot pyridine. Structures of these new tricyclic pyrazolines have been elucidated by IR, 1H- and 13C-NMR spectroscopies.

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalHeterocyclic Communications
Volume5
Issue number2
Publication statusPublished - 1999

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Pyrazoles
Nuclear magnetic resonance spectroscopy
pyridine
diphenyl
phenylhydrazine

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

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abstract = "Stereoselective synthesis of trans,trans-2,3,3a,4-tetrahydro-3-aryl-2,4-diphenyl[l]benzopyrano[4,3-c] pyrazoles 13-24 have been performed by the reaction of E-3-arylideneflavanones 1-12 with phenylhydrazine in hot pyridine. Structures of these new tricyclic pyrazolines have been elucidated by IR, 1H- and 13C-NMR spectroscopies.",
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AB - Stereoselective synthesis of trans,trans-2,3,3a,4-tetrahydro-3-aryl-2,4-diphenyl[l]benzopyrano[4,3-c] pyrazoles 13-24 have been performed by the reaction of E-3-arylideneflavanones 1-12 with phenylhydrazine in hot pyridine. Structures of these new tricyclic pyrazolines have been elucidated by IR, 1H- and 13C-NMR spectroscopies.

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