Substituent Chemical Shifts of 2-Aryl Derivatives of Benzimidazole, Benzimidazolium Ion, and Benzimidazoline 


Vol. 29,  No. 11, pp. 2205-0, Nov.  2008
10.5012/bkcs.2008.29.11.2205


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  Abstract

NMR spectra of a series of 2-arylbenzimidazoles, 2-aryl-1,3-dimethylbenzimidazolium iodides, and 2-aryl- 1,3-dimethylbenzimidazolines were examined by correlating 1H and 13C chemical shift values with the Hammett substituent constants σ. The signals corresponding to C-2 of the imidazole ring show good correlation with the largest ρ values in each series. The ρ values for C-2 of the benzimidazoles and the benzimidazolium ions were very close, but that of the benzimidazoline was about a half of the former series.

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  Cite this article

[IEEE Style]

C. K. Lee and I. S. H. Lee, "Substituent Chemical Shifts of 2-Aryl Derivatives of Benzimidazole, Benzimidazolium Ion, and Benzimidazoline," Bulletin of the Korean Chemical Society, vol. 29, no. 11, pp. 2205-0, 2008. DOI: 10.5012/bkcs.2008.29.11.2205.

[ACM Style]

Chang Kiu Lee and In Sook Han Lee. 2008. Substituent Chemical Shifts of 2-Aryl Derivatives of Benzimidazole, Benzimidazolium Ion, and Benzimidazoline. Bulletin of the Korean Chemical Society, 29, 11, (2008), 2205-0. DOI: 10.5012/bkcs.2008.29.11.2205.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949