H. Kotsuki et al., A new facile method for the synthesis of 4-dialkylaminopyridine derivatives by high-pressure-promoted amination of 4-chloropyridine, SYNLETT, (1), 2000, pp. 116-118
A new method for synthesizing 4-(di)alkylaminopyridine derivatives in high
yield was established by the high-pressure-promoted nucleophilic aromatic s
ubstitution of 4-chloropyridine with various primary/secondary amines.