South African Journal of Chemistry
versão On-line ISSN 1996-840X
ZOLFIGOL, Mohammad Ali et al. Nano-Fe3O4/O2: Green, magnetic and reusable catalytic system for the synthesis of benzimidazoles. S.Afr.j.chem. (Online) [online]. 2012, vol.65, pp. 280-285. ISSN 1996-840X.
Magnetic nano-Fe3O4 was applied in the presence of atmospheric air as a green, efficient, heterogeneous and reusable catalytic system for the synthesis of benzimidazoles via the reactions of o-phenylenediamine (1 eq) with aryl aldehydes (1 eq) in excellent yields (85-97 %) and short reaction times (30-100 min) with a proposed mechanism.
Palavras-chave : Benzimidazole; benzene-1; 2-diamine; aldehyde; nano-Fe3O4; heterogeneous catalyst; magnetite; O2.