Synthesis of 4-Aryl-3-(2-chromonyl)-2-pyrazolines by the 1,3-Dipolar Cycloaddition of 2-Styrylchromones with Diazomethane

Diana C.G.A. Pinto, Artur M.S. Silva, Lúcia M.P.M. Almeida, José A.S. Cavaleiro, Albert Lévai, Tamás Patonay

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Abstract

The first reported 1,3-dipolar cycloaddition of 2-styrylchromones with diazomethane afforded 4-aryl-3-(2-chromonyl)-2-pyrazolines. However, 3-aryl-4-(2-chromonyl)-1-pyrazolines have been also found as minor products of this reaction. These two series of pyrazolines have been fully characterized.

Original languageEnglish
Pages (from-to)217-224
Number of pages8
JournalJournal of Heterocyclic Chemistry
Volume35
Issue number1
DOIs
Publication statusPublished - Jan 1 1998

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ASJC Scopus subject areas

  • Organic Chemistry

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