Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite
- Autores
- Nador, Fabiana Gabriela; Volpe, María Alicia; Alonso, Francisco; Radivoy, Gabriel Eduardo
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
Fil: Nador, Fabiana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Alonso, Francisco. Universidad de Alicante; España
Fil: Radivoy, Gabriel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina - Materia
-
Magnetic Catalyst
Copper Nanoparticles
Maghemite
N-Arylation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/25960
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Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemiteNador, Fabiana GabrielaVolpe, María AliciaAlonso, FranciscoRadivoy, Gabriel EduardoMagnetic CatalystCopper NanoparticlesMaghemiteN-Arylationhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A 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.Fil: Nador, Fabiana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Alonso, Francisco. Universidad de Alicante; EspañaFil: Radivoy, Gabriel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaElsevier2014-04-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25960Nador, 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; 6082-60870040-4020CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040402014004748info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tet.2014.04.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:53:34Zoai:ri.conicet.gov.ar:11336/25960instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:53:35.247CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
title |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
spellingShingle |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite Nador, Fabiana Gabriela Magnetic Catalyst Copper Nanoparticles Maghemite N-Arylation |
title_short |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
title_full |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
title_fullStr |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
title_full_unstemmed |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
title_sort |
Synthesis of N-aryl imidazoles catalyzed by copper nanoparticles on nanosized silica-coated maghemite |
dc.creator.none.fl_str_mv |
Nador, Fabiana Gabriela Volpe, María Alicia Alonso, Francisco Radivoy, Gabriel Eduardo |
author |
Nador, Fabiana Gabriela |
author_facet |
Nador, Fabiana Gabriela Volpe, María Alicia Alonso, Francisco Radivoy, Gabriel Eduardo |
author_role |
author |
author2 |
Volpe, María Alicia Alonso, Francisco Radivoy, Gabriel Eduardo |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Magnetic Catalyst Copper Nanoparticles Maghemite N-Arylation |
topic |
Magnetic Catalyst Copper Nanoparticles Maghemite N-Arylation |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
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. Fil: Nador, Fabiana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina Fil: Alonso, Francisco. Universidad de Alicante; España Fil: Radivoy, Gabriel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina |
description |
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. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-05 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/25960 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 0040-4020 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/25960 |
identifier_str_mv |
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 0040-4020 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040402014004748 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tet.2014.04.003 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1846083066614775808 |
score |
13.22299 |