A new redox system: Trichloromethylarene - Pyridine base. On the mechanism of the synthesis of N-(4-pyridyl)pyridinium dichloride

Article abstract of DOI:10.1016/0040-4039(95)00943-7

A redox reaction of trichloromethylarenes with pyridines results in respective N-(α-chloroarylmethyl)-substituted pyridinium chlorides which give on hydrolysis aromatic aldehydes and 4-chloropyridines or 1,4'- bipyridinium salts.