Intramolecular charge transfer processes in a series of styryl derivatives of pyridine and quinoline N-oxides

Abstract

Intramolecular charge transfer processes in a series of the trans-isomers of styryl derivatives of pyridines and quinolines, their hydrochlorides and molecular complexes with BF₃ have been studied by electronic and IR spectroscopy. Electron donor groups involved in direct resonance conjugation with the N-oxide group intensify these processes, while electron acceptor nitro groups somewhat weaken them. Protons and BF₃ coordinate to the oxygen of the N→O group to form strong 1∶1 complexes, except in the cases of 4-(4-dimethylaminostyryl)quinoline and pyridine N-oxides, in which a second acceptor molecule adds to the amino group.

How to Cite
Andreev, V. P.; Batotsyrenova, E. G.; Ryzhakov, A. V.; Rodina, L. L. Chem. Heterocycl. Compd. 1998, 34, 941. [Khim. Geterotsikl. Soedin. 1998, 34, 1093.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02311331