Synthesis and electrochemical Reduction of 2,2′-diaryl-5,5,5′,5′-tetramethyl-3,3′-bi(pyrrol-3-ylidene)-4,4′(5H,5′H)-dione 1,1′-dioxides
作者:I. A. Khalfina、N. V. Vasil’eva、I. G. Irtegova、L. A. Shundrin、V. A. Reznikov
DOI:10.1134/s1070428010030176
日期:2010.3
2,2′-Diaryl-5,5,5′,5′-tetramethyl-3,3′-bi(pyrrol-3-ylidene)-4,4′(5H,5′H)-dione 1,1′-dioxides containing a carboxy, alkoxycarbonyl, or carbamoyl group in the para position of one or both benzene rings were synthesized. These compounds may be regarded as cyclic dinitrones with conjugated C=C bond. Mild aminolysis of carboxy groups in the title compounds may be used to introduce dinitrone fragments into
Oxidative dimerization of heterocyclic nitrones, derivatives of pyrroline and imidazoline
作者:V. A. Reznikov、V. V. Martin、L. B. Volodarskii
DOI:10.1007/bf00962395
日期:1990.6
The oxidation of beta-oxonitrones, derivatives of pyrroline and imidazoline, afforded symmetric dimers with a C-C bond and dehydrodimers with a C = C bond. Oxidation of the trifluoroacetyl imidazoline derivative afforded an asymmetric dimer. The oxidative dimerization of endocyclic beta-oxonitrones, derivatives of pyrroline, proceeded much faster than that of exocyclic beta-oxonitrones, derivatives of imidazoline. Imidazoline derivatives containing a perfluorophenyl or cyano group at the alpha-carbon atom on the nitrone group also underwent oxidative dimerization.
REZNIKOV, V. A.;MARTIN, V. V.;VOLODARSKIJ, L. B., IZV. AN CCCP. CEP. XIM.,(1990) N, S. 1398-1404
作者:REZNIKOV, V. A.、MARTIN, V. V.、VOLODARSKIJ, L. B.