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Silica supported phosphine gold complexes as an efficient catalytic system for a dearomative spirocyclization

hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorCAO, Zhen
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorSCALABRE, Antoine
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorNLATE, Sylvain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBUFFIERE, Sonia
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorPOUGET, Emilie
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorBIBAL, Brigitte
dc.date.issued2021
dc.identifier.issn0947-6539
dc.description.abstractEnThe combination of metal catalyst and inorganic silica frameworks provides a greener approach to recyclable catalysis. In this study, three phosphine–gold chloride complexes have been successfully covalently grafted onto chiral silica nanohelices. The resulting 3D ensembles showed chiroptical properties that allowed the monitoring of the supported ligands. The heterogeneous gold chloride catalysts in cooperation with silver triflate exhibited high reactivity in various reactions, especially in the spirocyclization of aryl alkynoate esters, for which a catalytic loading of 0.05 mol % could be employed. The heterogeneous catalysts could be easily recovered and recycled seven or eight times without any loss of efficiency. By adding more silver triflate, 25 cycles with full conversion were achieved owing to a complex catalytic system based on silica and metallic species.
dc.description.sponsorshipL'effet mâle chez les ongulés: applications agronomiques et mécanismes neuroendocriniens - ANR-11-ISV7-0001
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.title.enSilica supported phosphine gold complexes as an efficient catalytic system for a dearomative spirocyclization
dc.typeArticle de revue
dc.identifier.doi10.1002/chem.202004251
dc.subject.halChimie/Catalyse
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry - A European Journal
bordeaux.page427-433
bordeaux.volume27
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03034091
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03034091v1
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