Catalytic conversion of alkynes to α-vinyl sulfides mediated by carbene-linker-carbene (CXC) rhodium and iridium complexes
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Altres documents de l'autoria: Tolley, Lewis C.; Fernandez, Israel; Bezuidenhout, Daniela; Guisado-Barrios, Gregorio
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadades
Títol
Catalytic conversion of alkynes to α-vinyl sulfides mediated by carbene-linker-carbene (CXC) rhodium and iridium complexesData de publicació
2021-01-21Editor
The Royal Society of ChemistryISSN
2044-4753Cita bibliogràfica
Catal. Sci. Technol., 2021, 11, 516Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://pubs.rsc.org/en/Content/ArticleLanding/2020/CY/D0CY01647K#!divAbstractVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
The catalytic activity of a set of mono- and bimetallic Rh(I) and Ir(I) complexes bearing carbene-linker-carbene (CXC) bis-triazolylidene ligands (with X = O, N) coordinated in a bridging or chelating fashion was ... [+]
The catalytic activity of a set of mono- and bimetallic Rh(I) and Ir(I) complexes bearing carbene-linker-carbene (CXC) bis-triazolylidene ligands (with X = O, N) coordinated in a bridging or chelating fashion was evaluated in the hydrothiolation of alkynes. The hydrothiolation of 1-hexyne with thiophenol in the absence of an external base or other additives was selected as a model reaction. All rhodium complexes are highly selective catalysts towards Markovnikov product formation and display superior activity compared to the related iridium derivatives. DFT calculations were carried out to rationalize the reaction mechanism and selectivity of this process. Neutral dinuclear [Rh2Cl2(cod)2(μ-COC)] was found to be the most effective catalyst for this transformation. Its applicability was further studied towards the hydrothiolation of different alkyl and aryl alkynes using predominantly aryl thiols and proved to be one of the most active and selective catalysts towards the α-vinyl sulfide product to date. [-]
Codi del projecte o subvenció
PGC2018-093382-B100 | RTI2018-098903-J100
Títol del projecte o subvenció
Supramolecular organometallic structures for catalysis and molecular recognition (SUPRACAT) | Procesos catalíticos incluidos por luz sostenibles utilizando metales de transición con estados de oxidación no convencionales (SULICAT)
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info:eu-repo/semantics/openAccess
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- INAM_Articles [517]
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