NMR Detection of Isomers Arising from Restricted Rotation of the C-N Amide Bond of N-Formyl-o-toluidine and N,N’-bis-Formyl-o-tolidine

NMR Detection of Isomers Arising from Restricted Rotation of the C-N Amide Bond of N-Formyl-o-toluidine and N,N’-bis-Formyl-o-tolidine

Full and unambiguous assignment of all 1H- and 13C-NMR resonances of the isomers due to restricted C-N amide bond rotation of N-formyl-o-toluidine and N,N'-bis-formyl-o-tolidine in DMSO-d6 is reported. The cis-isomer predominates in the equilibrium mixture of both compounds as 1D-NOE difference...

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Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2002-08, Vol.7 (8), p.662-673
Hauptverfasser: Quintanilla-Licea, Ramiro, Colunga-Valladares, Juan F., Caballero-Quintero, Adolfo, Rodríguez-Padilla, Cristina, Tamez-Guerra, Reyes, Gómez-Flores, Ricardo, Waksman, Noemí
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Sprache:eng
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Zusammenfassung:Full and unambiguous assignment of all 1H- and 13C-NMR resonances of the isomers due to restricted C-N amide bond rotation of N-formyl-o-toluidine and N,N'-bis-formyl-o-tolidine in DMSO-d6 is reported. The cis-isomer predominates in the equilibrium mixture of both compounds as 1D-NOE difference experiments show.
ISSN:1420-3049
1420-3049
DOI:10.3390/70800662