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Annulated derivatives of 2,2′-biimidazole, 2-(2′-imidazolyl)benzimidazole, ...
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Annulated derivatives of 2,2′-biimidazole, 2-(2′-imidazolyl)benzimidazole, and 2,2′-bibenzimidazole
作者:
James R. Ames,
Melissa A. Houghtaling,
Deborah L. Terrian,
Timothy P. Mitchell,
期刊:
Canadian Journal of Chemistry
(NRC Available online 1997)
卷期:
Volume 75,
issue 1
页码: 28-36
ISSN:0008-4042
年代: 1997
DOI:10.1139/v97-004
出版商: NRC Research Press
数据来源: NRC
摘要:
Preparation of bisannulated salts of 2,2′-biimidazole, 2-(2′-imidazolyl)benzimidazole, 2,2′-bibenzimidazole, and annulated salts of 1,1′-dimethyl-2,2′-biimidazole, 1,1′-dimethyl-2-(2′-imidazolyl)benzimidazole, and 1,1′-dimethyl-2,2′-bibenzimidazole is accomplished by direct alkylation of the parent azaheterocycle with excess 1,n-dihaloalkane. Discussions of the product conformations use electronic absorption spectra and NMR. The redox potentials of these salts are measured in DMF and CH3CN, and become increasingly more negative and less reversible as the systems become less planar.Keywords: electrochemistry, bridged azabiaryl salts.
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