Mar-Apr 1990 2-Methylpyridinium Salts as 1,4-Dinucleophiles. IV. Westphal Condensation with 2-Alkyl-l-aminoazinium Substrates M. Paz Matia, J. Luis García Navio, J. José Vaquero and J. Alvarez-Builla* Departamento de Química Orgánica, Universidad de Alcalá, Madrid, Spain Received June 27, 1989 Condensation of 2-alkyl-l-aminopyridinium, quinolinium or l-alkyl-2-aminoisoquinolinium salts with 1,2-acenaphthenequinone or 9,10- ...