A. Ruiz et al., PYRIDINIUM CHLORIDE - A NEW REAGENT FOR N-DEMETHYLATION OF N-METHYLAZINIUM DERIVATIVES, Tetrahedron letters, 38(35), 1997, pp. 6205-6208
A new N-demethylation reaction of N-methylazinium derivatives by using
boiling pyridinium chloride is described. The reaction is quite clean
, fast and yields are almost quantitatives. (C) 1997 Elsevier Science
Ltd.