Artículo
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite
Fecha de publicación:
05/04/2014
Editorial:
Elsevier
Revista:
Tetrahedron
ISSN:
0040-4020
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A magnetically recoverable catalyst consisting of copper nanoparticles (CuNPs) on nanosized silicacoated maghemite is presented. The catalyst has been prepared under mild conditions by mixing the magnetic support with a freshly prepared suspension of CuNPs obtained by fast reduction of anhydrous CuCl2 with lithium sand and a catalytic amount of DTBB (4,4'-di-tert-butylbiphenyl) as electron carrier. This copper-based catalyst has shown to be very efficient in the N-(hetero)arylation of imidazole using (hetero)aryl bromides and iodides as arylating agents under ligand-free conditions. The catalyst is easily recovered by means of an external magnet and can be reutilized in three N-arylation cycles without apparent loss of catalytic activity.
Palabras clave:
Magnetic Catalyst
,
Copper Nanoparticles
,
Maghemite
,
N-Arylation
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Licencia
Identificadores
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Nador, Fabiana Gabriela; Volpe, María Alicia; Alonso, Francisco; Radivoy, Gabriel Eduardo; Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite; Elsevier; Tetrahedron; 70; 36; 5-4-2014; 6082-6087
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