Beilstein J. Org. Chem.2014,10, 2448–2452, doi:10.3762/bjoc.10.255
de Química, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile Departamento de Química, Facultad de Ciencias Básicas Universidad de Antofagasta, Casilla 170, Antofagasta, Chile 10.3762/bjoc.10.255 Abstract A number of N-phenyl-1,4-naphthoquinonemonoimines 6–10 were prepared
conventional oxidative phenylamination procedures, this novel synthetic method offers the advantage of aerobic conditions “on water” instead of hazardous oxidant reagents currently employed in aqueous alcoholic media.
Keywords: 1,4-naphthoquinonemonoimines; on water; oxidative coupling; rose bengal; solar
green route for the preparation of N-phenyl-1,4-naphthoquinonemonoimines by on-water oxidative coupling reaction of 1-hydroxynaphthalene derivatives with oxygen-substituted phenylamines under solar light or green LEDs radiation, rose bengal as singlet oxygen sensitizer and aerobic conditions.
Results