Synthesis of Quinolines, 2-Quinolones, Phenanthridines and 6(5 H )-Phenanthridinones via Palladium[0]-Mediated Ullmann Cross-Coupling of 1-Bromo-2-nitroarenes with β -Halo-enals, -enones or -esters

Abstract

Palladium[0]-mediated Ullmann cross-coupling of 1-bromo-2-nitrobenzene (1 R = H) and its derivatives with a range of β-halo-enals, -enones, or -esters readily affords the corresponding β-aryl derivatives, which are converted into the corresponding quino