Russian Journal of Organic Chemistry

, Volume 53, Issue 5, pp 729–733 | Cite as

Thermolysis of 1-(methylideneamino)-1H-pyrrole-2,3-diones. Formation of pyrazolodioxazines at [4+2]-cycloaddition of azomethinimines to arylcarbaldehydes

  • V. E. Zhulanov
  • M. V. Dmitriev
  • A. N. Maslivets


4-Acyl-1-[(diphenylmethylidene)amino]-5-methoxycarbonyl-1Н-pyrrole-2,3-diones generate at the thermolysis 4-acyl-3-(methoxycarbonyl)-1-(diphenylmethylidene)-1H-pyrazol-1-ium-5-olates that react with aromatic aldehydes to form methyl 2-aryl-8-acyl-4,4-diphenyl-4H-pyrazolo[5,1-d][1,3,5]dioxazine-7-carboxylates whose structure is proved by X-ray diffraction analysis.


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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. E. Zhulanov
    • 1
  • M. V. Dmitriev
    • 1
  • A. N. Maslivets
    • 1
  1. 1.Perm State National Reserch UniversityPermRussia

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