106915-37-1Relevant academic research and scientific papers
Radical Reactions of N-Heterocyclic Compounds. V. ESR-Investigation of Nitroxide Radicals of Substituted 3-Anilino-1,5-diphenylpyrazoles
Schulz, Manfred,Moegel, Liena,Omelka, Ladislav,Tkac, Alexander
, p. 222 - 230 (2007/10/02)
The correlation of the e.s.r. splitting constants with the Hammett values for nitroxides from substituted 3-anilino-1,5-diphenylpyrazoles 1a-e and substituted 1,5-diphenyl-3-p-toluidinopyrazoles 1f-i provides evidence for extensive interannular conjugation between the N1-benzene ring and the pyrazole ring of these nitroxides.The conjugation between the arylamino group and the pyrazole ring is extensive only in the nitroxides derived from 1f-i.The capto-dative substituted p-toluidino-nitroxides 2g,h have a better spin distribution than the nitroxide 2i with two electron-donating substituents.
