Synthesis of 1-substituted 5-aryl-3-(3-coumarinyl)-2-pyrazolines by the reaction of 3-aryl-1-(3-coumarinyl)propen-1-ones with hydrazines

A. Lévai, J. Jekó́, D. I. Brahmbhatt

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21 Citations (Scopus)

Abstract

1-Acetyl- and 1-propionyl-2-pyrazolines 11-27 have been synthesized by the reaction of (3-coumarinyl)chalcones 1-10 with hydrazine in hot acetic acid or propionic acid. While 5-aryl-3-(3-coumarinyl)-1-phenyl-2-pyrazolines 28-35 have been prepared by the reaction of (3-coumarinyl)chalcones 1,3,5-10 with phenylhydrazine in hot pyridine. Structures of all new compounds have been elucidated by microanalyses, 1H and 13C nmr spectroscopies.

Original languageEnglish
Pages (from-to)1231-1235
Number of pages5
JournalJournal of Heterocyclic Chemistry
Volume42
Issue number6
Publication statusPublished - Sep 2005

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Hydrazines
Chalcones
hydrazine
Acetic Acid
Spectroscopy

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

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title = "Synthesis of 1-substituted 5-aryl-3-(3-coumarinyl)-2-pyrazolines by the reaction of 3-aryl-1-(3-coumarinyl)propen-1-ones with hydrazines",
abstract = "1-Acetyl- and 1-propionyl-2-pyrazolines 11-27 have been synthesized by the reaction of (3-coumarinyl)chalcones 1-10 with hydrazine in hot acetic acid or propionic acid. While 5-aryl-3-(3-coumarinyl)-1-phenyl-2-pyrazolines 28-35 have been prepared by the reaction of (3-coumarinyl)chalcones 1,3,5-10 with phenylhydrazine in hot pyridine. Structures of all new compounds have been elucidated by microanalyses, 1H and 13C nmr spectroscopies.",
author = "A. L{\'e}vai and J. Jek{\'o}́ and Brahmbhatt, {D. I.}",
year = "2005",
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T1 - Synthesis of 1-substituted 5-aryl-3-(3-coumarinyl)-2-pyrazolines by the reaction of 3-aryl-1-(3-coumarinyl)propen-1-ones with hydrazines

AU - Lévai, A.

AU - Jekó́, J.

AU - Brahmbhatt, D. I.

PY - 2005/9

Y1 - 2005/9

N2 - 1-Acetyl- and 1-propionyl-2-pyrazolines 11-27 have been synthesized by the reaction of (3-coumarinyl)chalcones 1-10 with hydrazine in hot acetic acid or propionic acid. While 5-aryl-3-(3-coumarinyl)-1-phenyl-2-pyrazolines 28-35 have been prepared by the reaction of (3-coumarinyl)chalcones 1,3,5-10 with phenylhydrazine in hot pyridine. Structures of all new compounds have been elucidated by microanalyses, 1H and 13C nmr spectroscopies.

AB - 1-Acetyl- and 1-propionyl-2-pyrazolines 11-27 have been synthesized by the reaction of (3-coumarinyl)chalcones 1-10 with hydrazine in hot acetic acid or propionic acid. While 5-aryl-3-(3-coumarinyl)-1-phenyl-2-pyrazolines 28-35 have been prepared by the reaction of (3-coumarinyl)chalcones 1,3,5-10 with phenylhydrazine in hot pyridine. Structures of all new compounds have been elucidated by microanalyses, 1H and 13C nmr spectroscopies.

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