THE TRANSITION METAL-CATALYZED N-ALKYLATION AND N-HETEROCYCLIZATION. A REDUCTIVE TRANSFORMATION OF NITROBENZENE INTO N,N-DIALKYLANILINE AND 2,3-SUBSTITUTED QUINOLINE USING ALDEHYDE AND CARBON MONOXIDE

Abstract
The catalytic N-alkylation and N-heterocyclization of nitrobenzene occurs at 180°C under pressures of carbon monoxide(70 atm) in the presence of aldehyde and transition metal complexes to give 2,3-dialkyl quinoline and N,N-dialkylaniline in good yields. The product selectivity highly depends on the catalysts.