Tin (IV) chloride-promoted reactions of β-dicarbonyl compounds with nitriles. Synthesis of aminopyridines and aminoquinolines.
作者:Augusto C. Veronese、Rosella Callegari、Suada Ahmed Ali Salah
DOI:10.1016/s0040-4039(00)97429-x
日期:1990.1
β-Ketoesters and β-diesters react with β-enaminonitriles in the presence of stoichiometric amounts of tin (IV) chloride to give 4-aminopyridines and pyridones while they react with aromatic orthoaminonitriles to give 4-aminoquinolines and quinolones.
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.