A simple efficient procedure for the stereoselective synthesis of trans-2,3,3a,4-tetrahydro-3-aryl-2-(4-carboxyphenyl)[1]benzopyrano[4,3-c] pyrazoles and their [1]benzothiopyrano analogues

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Abstract

Hitherto unknown group of tricyclic fused pyrazolines have been synthesized by the reaction of 3-arylidenechromano-nes and 3-arylidene-1-thiochromanones with (4-carboxyphenyl)hydrazine in hot anhydrous pyridine solution. Structures of all new compounds have been elucidated by microanalyses, IR, 1H, 13C NMR and mass spectrometric measurements.

Original languageEnglish
Pages (from-to)566-570
Number of pages5
JournalActa Chimica Slovenica
Volume56
Issue number3
Publication statusPublished - 2009

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hydrazine
Pyrazoles
Microanalysis
Nuclear magnetic resonance
pyridine

Keywords

  • (4-carboxyphenyl) hydrazine
  • 3-arylidene-1-thiochromanones
  • 3-Arylidenechromanones
  • Pyrazolines

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "A simple efficient procedure for the stereoselective synthesis of trans-2,3,3a,4-tetrahydro-3-aryl-2-(4-carboxyphenyl)[1]benzopyrano[4,3-c] pyrazoles and their [1]benzothiopyrano analogues",
abstract = "Hitherto unknown group of tricyclic fused pyrazolines have been synthesized by the reaction of 3-arylidenechromano-nes and 3-arylidene-1-thiochromanones with (4-carboxyphenyl)hydrazine in hot anhydrous pyridine solution. Structures of all new compounds have been elucidated by microanalyses, IR, 1H, 13C NMR and mass spectrometric measurements.",
keywords = "(4-carboxyphenyl) hydrazine, 3-arylidene-1-thiochromanones, 3-Arylidenechromanones, Pyrazolines",
author = "A. L{\'e}vai and J. Jek{\'o}́",
year = "2009",
language = "English",
volume = "56",
pages = "566--570",
journal = "Acta Chimica Slovenica",
issn = "1318-0207",
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TY - JOUR

T1 - A simple efficient procedure for the stereoselective synthesis of trans-2,3,3a,4-tetrahydro-3-aryl-2-(4-carboxyphenyl)[1]benzopyrano[4,3-c] pyrazoles and their [1]benzothiopyrano analogues

AU - Lévai, A.

AU - Jekó́, J.

PY - 2009

Y1 - 2009

N2 - Hitherto unknown group of tricyclic fused pyrazolines have been synthesized by the reaction of 3-arylidenechromano-nes and 3-arylidene-1-thiochromanones with (4-carboxyphenyl)hydrazine in hot anhydrous pyridine solution. Structures of all new compounds have been elucidated by microanalyses, IR, 1H, 13C NMR and mass spectrometric measurements.

AB - Hitherto unknown group of tricyclic fused pyrazolines have been synthesized by the reaction of 3-arylidenechromano-nes and 3-arylidene-1-thiochromanones with (4-carboxyphenyl)hydrazine in hot anhydrous pyridine solution. Structures of all new compounds have been elucidated by microanalyses, IR, 1H, 13C NMR and mass spectrometric measurements.

KW - (4-carboxyphenyl) hydrazine

KW - 3-arylidene-1-thiochromanones

KW - 3-Arylidenechromanones

KW - Pyrazolines

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M3 - Article

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