Abstract
A aromatic halogeno or nitro compounds (Va-1) which are reactive to nucleophilic reagents reacted with N-aminopyridinium halide (I) in sodium ethoxide solution and afforded pyridine N-arylimine derivatives (Via-i) as stable crystalline product. This is a new synthetic method for the preparation of pyridine N-arylimines. Ultraviolet (UV) and nuclear magnetic resonance (NMR) spectral data of these compounds suggest that the π-electron density of the pyridine and the aryl group is increased by distribution of the negative charge at the imine nitrogen.
