88988-84-5Relevant articles and documents
NMR STUDIES ON IMIDINES. VII. THE TAUTOMERISM OF MONO-N-ARYL SUBSTITUTED PHTHALIC IMIDINES. A 1H AND 13C NUCLEAR MAGNETIC RESONANCE STUDY.
Spiessens, Luc I.,Anteunis, M. J. O.
, p. 431 - 452 (2007/10/02)
1H and 13C NMR data indicate the presence of N-aryl substituted phthalic imidines to exist as 3-amino-1-N-arylimino-1H-isoindole compounds in DMSO-d6.In CDCl3 a tautomeric equilibrium mixture containing 20percent of the imino form is observed.The presence of a dimeric association through intramolecular H bonds is suggested.It is shown that intramolecular NH-N hydrogen bonds displace the tautomeric equilibrium toward the imino tautomer in 2-pyridyl substituted phthalic imidines.In the reaction product of phthalic imidine and 2,6-diaminopyridine, 11, two pairs of intramolecular NH-N hydrogen bonds result in the presence of both amino and imino tautomeric forms in the same molecular species.
TAUTOMERISM AND ISOMERISM IN 1,3-DIIMINOISOINDOLINE DERIVATIVES. I. PROTOTROPIC TAUTOMERISM AND Z,E-ISOMERIZATION OF 1,3-DIIMINOISOINDOLINE DERIVATIVES
Negrebetskii, V. V.,Balitskaya, O. V.,Kornilov, M. Yu.
, p. 2320 - 2332 (2007/10/02)
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