Tin (IV) Chloride-promoted Synthesis of 4-Aminopyridines and 4-Aminoquinolines
作者:Augusto C. Veronese、Rosella Callegari、Carlo F. Morelli
DOI:10.1016/0040-4020(95)00773-2
日期:1995.11
Ortho-aminobenzonitriles 1 react with β-ketoesters and alkyl malonates, in the presence of stoichiometric amounts of tin(IV) chloride, to give 4-aminoquinolines 2 and 4-amino-2-quinolones 3 respectively. Similarly β-enaminonitriles 7 afford 4-aminopyridines 8 and 4-amino-2-pyridones 9.