Esr and polarography of nitroazoles. 4. Polarographic study of nitrobenzimidazoles
作者:V. A. Lopyrev、L. I. Larina、L. Kh. Baumane、E. F. Shibanova、R. A. Gavar、S. M. Ponomareva、T. I. Vakul'skaya、Ya. P. Stradyn'
DOI:10.1007/bf00506400
日期:1984.9
Investigation of Benzimidazoles. 5—transmission of the substituent effects in 2-substituted 5(6)-nitrobenzimidazoles studied by1H,13C and15N NMR spectroscopy
作者:V. A. Lopyrev、L. I. Larina、T. I. Vakul'skaya、M. F. Larin、E. F. Shibanova、I. A. Titova、M. G. Voronkov、E. E. Liepin'sh
DOI:10.1002/mrc.1260230505
日期:1985.5
The influence of substituents on the 1H, 13C and 15N NMR chemicalshifts of 2‐substituted 5(6)‐nitrobenzimidazoles and their analogues labelled with 15N in the nitro group was investigated. It was found that the substituenteffects are transmitted to the carbon and hydrogen nuclei in positions 4–7 mainly by the resonance mechanism, but to the nitro‐nitrogen atom with approximately equal contributions