Azapyrenes are the nitrogen isosteres of pyrene. Obviously, based on theoretical and experimental studies, the electron-acceptor azapyrene domains may be considered as convenient scaffolds for constructing a large variety of...

Two novel synthetic approaches to realize the direct C(sp(2))-H bond functionalization in cyclic nitrones are reported. Palladium(II)-catalyzed oxidative C-C coupling of 2,2-dialkyl-4-phenyl-2H-imidazole 1-oxides with indoles was shown to result in the formation of 5-indolyl-3-yl derivatives, while nucleophilic substitution of hydrogen (S(N)(H)) at C(5) of the same imidazole system was found to afford the corresponding deoxygenated compounds.