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- Title
Reaction of bis(2-chloroethyl)-2-nitroethynylphosphonate with diazoacetic ester.
- Authors
Berestovitskaya, V. M.; Anisimova, N. A.; Gubaidullin, A. T.; Litvinov, I. A.; Berkova, G. A.; Makarova, N. G.
- Abstract
Reactions of 1,3-dipolar cycloaddition of bis(2-chloroethyl)-2-nitroethenylphosphonate to methyl and ethyl diazoacetates proceed with the formation of a mixture of regioisomers of phosphorylated nitropyrazoline carboxylates that under the reaction conditions undergo isomeric transformations and denitration and afford a mixture of Δ1- and Δ2-pyrazoline- and pyrazolecarboxylates. Structures of the synthesized substances are studied by the methods of IR and 1H, 31P NMR spectroscopy and partially by X-ray structural analysis.
- Subjects
RING formation (Chemistry); CHEMICAL reactions; NUCLEAR isomers; NUCLEAR magnetic resonance spectroscopy; PHOSPHORYLATION
- Publication
Russian Journal of General Chemistry, 2009, Vol 79, Issue 7, p1446
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S107036320907007X