A. Karasev, L. L. Lukatskaya, M. I. Rubtsov
Nov 1, 2002
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0
Influential Citations
3
Citations
Journal
Russian Chemical Bulletin
Abstract
Abstract3-(Benzoimidazol-2-yl)-2-phenylimino-2H-chromenes were synthesized. The protolytic equilibrium constants in 50% ethanol were determined. The correlations of the pKa values for the compounds in the ground and excited states and the PM3-calculated heats of formation with the σ+ constants of substituents were established. The nitrogen atom of the benzoimidazole fragment is the center of protonation in the studied compounds.