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dc.contributor.author | Grirrane, Abdessamad | es_ES |
dc.contributor.author | Corma Canós, Avelino | es_ES |
dc.contributor.author | García Gómez, Hermenegildo | es_ES |
dc.date.accessioned | 2013-11-20T09:28:41Z | |
dc.date.issued | 2011-02-18 | |
dc.identifier.issn | 0947-6539 | |
dc.identifier.uri | http://hdl.handle.net/10251/33797 | |
dc.description.abstract | Copper(II) oxide nanoparticles supported on magnesia have been prepared from CuII supported on magnesia by hydrogen reduction at 400°C followed by storage under ambient conditions. X-ray photoelectron spectroscopy of the material clearly shows that immediately after the reduction copper(0)-metal nanoparticles are present on the magnesia support, but they undergo fast oxidation to copper oxide upon contact with the ambient for a short time. TEM images show that the catalytically active CuO/MgO material is formed of well-dispersed copper oxide nanoparticles supported on fibrous MgO. CuO/MgO exhibits a remarkable catalytic activity for the monoborylation of aromatic, aliphatic, terminal, and internal alkynes, the products being formed with high regio- (borylation at the less substituted carbon) and stereoselectivity (trans-configured). CuO/MgO exhibits complete chemoselectivity towards the monoborylation of alkynes in the presence of alkenes. Other metal nanoparticles such as gold or palladium are inactive towards borylation, but undergo undesirable oligomerization or partial hydrogenation of the C[TRIPLE BOND]C triple bond. In contrast, platinum, either supported on magnesia or on nanoparticulate ceria, efficiently promotes the stereoselective diborylation of alkynes to yield a cis-configured diboronate alkene. By using platinum as the catalyst we have developed a tandem diborylation/hydrogenation reaction that gives vic-diboronated alkanes from alkynes in one pot. | es_ES |
dc.description.sponsorship | Financial support from the Spanish Ministry of Science and Innovation (Consolider Ingenio 2010 project MULTICAT and CQT2009-11853) is gratefully acknowledged. A.G. thanks the CSIC for a research associate JAE contract. We also thank Fundacion Areces for the financial support of this research. | en_EN |
dc.format.extent | 12 | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Wiley-VCH Verlag | es_ES |
dc.relation.ispartof | Chemistry - A European Journal | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Boron | es_ES |
dc.subject | Copper | es_ES |
dc.subject | Heterogeneous catalysis | es_ES |
dc.subject | Platinum | es_ES |
dc.subject | Supported catalysts | es_ES |
dc.subject.classification | QUIMICA ORGANICA | es_ES |
dc.title | Stereoselective single (copper) or double (platinum) boronation of alkynes catalyzed by magnesia-supported copper oxide or platinum nanoparticles | es_ES |
dc.type | Artículo | es_ES |
dc.embargo.lift | 10000-01-01 | |
dc.embargo.terms | forever | es_ES |
dc.identifier.doi | 10.1002/chem.201002777 | |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CTQ2009-11583/ES/Ruptura Fotocaliftica del Agua con Luz Solar/ | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química | es_ES |
dc.description.bibliographicCitation | Grirrane, A.; Corma Canós, A.; García Gómez, H. (2011). Stereoselective single (copper) or double (platinum) boronation of alkynes catalyzed by magnesia-supported copper oxide or platinum nanoparticles. Chemistry - A European Journal. 17(8):2467-2478. doi:10.1002/chem.201002777 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1002/chem.201002777 | es_ES |
dc.description.upvformatpinicio | 2467 | es_ES |
dc.description.upvformatpfin | 2478 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 17 | es_ES |
dc.description.issue | 8 | es_ES |
dc.relation.senia | 40322 | |
dc.contributor.funder | Ministerio de Ciencia e Innovación | es_ES |
dc.contributor.funder | Consejo Superior de Investigaciones Científicas | es_ES |
dc.contributor.funder | Fundación Ramón Areces | es_ES |
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