Abstract4-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.

Thermolysis of 1-(methylideneamino)-1H-pyrrole-2,3-diones leads to the formation of pyrazolodioxazines, which react with aromatic aldehydes to form methyl 2-aryl-8-acyl-4,

Russian Journal of Organic Chemistry

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

Paper

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

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