102840-91-5Relevant articles and documents
SYNTHESES, 1H NMR AND IR SPECTRA OF SOME PARA-SUBSTITUTED AZOBENZENES
Skulski, Lech,Smialek-Kazmierowska, Sonia
, p. 17 - 35 (2007/10/02)
Ir absorption spectra (in KBr pellets and, in part, in CCl4 solutions) as well as 1H NMR spectra (in perdeuterioacetone or in CF3COOD) of trans-azobenzene and forty-nine of its para-monosubstituted derivatives have been investigated.Twenty -one azo compounds studied may, theoretically, exhibit azo-hydrazone and/or amide-iminol tautomerism, the rest of them represent corresponding non-tautomeric model compounds with established chemical structures.The spectral studies have evidenced that all the compounds are azoic in their crystals and solutions investigated.The monoamides and the corresponding sulfonamides seem to exist solely or nearly so in their tautomeric amide form and do not display any dual reactivity when methylated by the Pachter-Kloetzel method, which furnished exclusively the respective N-methyl derivatives.
