84271-26-1Relevant academic research and scientific papers
Stable vinylnitroxyl radicals, pyrroline derivatives
Reznikov, V. A.,Volodarsky, L. B.,Rybalova, T. V.,Gatilov, Yu. V.
, p. 106 - 115 (2007/10/03)
The first representatives of stable vinyl nitroxides, viz., radicals of the pyrroline series, were synthesized.
Reactions of heterocyclic paramagnetic aldonitrone, 2,2,5,5-tetramethyl-3-imidazoline-1-oxyl 3-oxide, with alkynes
Berezina,Reznikov,Volodarsky,Bagryanskaya,Gatilov
, p. 116 - 121 (2007/10/03)
The reactions of heterocyclic paramagnetic aldonitrone, viz., 2,2,5,5-tetramethyl-3-imidazoline-1-oxyl 3-oxide, with mono- and disubstituted alkynes afford unstable isoxazoline derivatives. The reactions with monosubstituted alkynes yield predominantly 5-substituted regioisomers. The resulting isoxazoline derivatives are readily (and often spontaneously) converted into enaminoketones, viz., imidazolidine-1-oxyl derivatives. In the presence of tolan, the title paramagnetic aldonitrone gives a dimer in which one imidazoline ring undergoes profound transformation. The structure of the resulting dimer was established by X-ray diffraction analysis.
REACTION OF 1-HYDROXY-2,2,4,5,5-PENTAMETHYL-3-IMIDAZOLINE AND THE CORRESPONDING NITROXYL RADICAL WITH ALDEHYDES, KETONES, AND ESTERS
Reznikov, V. A.,Reznikova, T. I.,Volodarskii, L. B.
, p. 1881 - 1888 (2007/10/02)
The reaction of 1-hydroxy-2,2,4,5,5-pentamethyl-3-imidazoline and the corresponding nitroxyl radical with phenyllithium leads to a lithium derivative, which reacts with aldehydes and ketones to give, after oxidation of the reaction mixture, aldol condensa
