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1H- and 13C-NMR Analysis of a Series of 1,2-Diaryl-1H-4,5-dihydroimidazoles
Department of Organic Chemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
* Author to whom correspondence should be addressed.
Received: 4 September 2004; in revised form: 28 December 2004 / Accepted: 30 December 2004 / Published: 28 February 2005
Abstract: An analysis of the 1H- and 13C-NMR spectra of a series of 1,2-diaryl-1H-4,5-dihydroimidazoles and comparisons with 4,5-dihydroimidazoles having differentsubstitution patterns are presented. The influence of different 1-aryl and 2-aryl groupsubstituents on spectroscopic parameters of the heterocyclic ring and on the contributionsof possible mesomeric structures in the system was determined. Spectroscopic featuresare coherent with the presence of two conjugated systems (Ar1-N and Ar2-C=N) whichcompete with the delocalization characteristics of the amidine system.
Keywords: 1; 2-Diaryl-1H-4; 5-dihydroimidazoles; spectroscopic characterization; 1H- and 13C-NMR spectra
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Salerno, A.; Perillo, I.A. 1H- and 13C-NMR Analysis of a Series of 1,2-Diaryl-1H-4,5-dihydroimidazoles. Molecules 2005, 10, 435-443.
Salerno A, Perillo IA. 1H- and 13C-NMR Analysis of a Series of 1,2-Diaryl-1H-4,5-dihydroimidazoles. Molecules. 2005; 10(2):435-443.
Salerno, Alejandra; Perillo, Isabel A. 2005. "1H- and 13C-NMR Analysis of a Series of 1,2-Diaryl-1H-4,5-dihydroimidazoles." Molecules 10, no. 2: 435-443.