Thermal, decomposition of some new spiro-1-pyrazolines

Gábor Tóth, Albert Lévai, Zoltán Dinya, Günther Snatzke

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Abstract

The thermal decomposition of spiro-1-pyrazolines 2 obtained by the cycloaddition of exocyclic α,β-unsaturated ketones with diazomethane gives spirocyclopropanes 4 with high selectivity and the new β-methyl-3-benzylidene derivatives 3. The configuration and conformation of the thermolysis products 3 and 4 were elucidated by different n.m.r. methods.

Original languageEnglish
Pages (from-to)8119-8132
Number of pages14
JournalTetrahedron
Volume47
Issue number38
DOIs
Publication statusPublished - Sep 16 1991

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ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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