Anilines react with an array of trialkylamines in the presence of a catalytic amount of RuCl3·nH2O and bis(diphenylphosphino)methane together with SnCl2·2H2O and hex-1-ene as hydrogen acceptor in dioxane at 180 °C to afford the corresponding 2,3-disubstituted quinolines in moderate to good yields.
Synthesis of quinolines via ruthenium-catalysed amine exchange reaction between anilines and trialkylamines
C. S. Cho, B. H. Oh, J. S. Kim, T. Kim and S. C. Shim, Chem. Commun., 2000, 1885 DOI: 10.1039/B005966H
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