Supported N-heterocyclic carbene rhodium complexes as highly selective hydroformylation catalysts
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Otros documentos de la autoría: Gil, W.; Boczon, K.; Trzeciak, Anna M.; Ziolkowski, Józef J.; Garcia-Verdugo, Eduardo; Luis, Santiago V.; Sans, Victor
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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http://dx.doi.org/10.1016/j.molcata.2009.05.007 |
Metadatos
Título
Supported N-heterocyclic carbene rhodium complexes as highly selective hydroformylation catalystsAutoría
Fecha de publicación
2009Editor
ElsevierISSN
13811169Cita bibliográfica
Journal of Molecular Catalysis A: Chemical, 309, , p. 131-136Tipo de documento
info:eu-repo/semantics/articlePalabras clave / Materias
Resumen
New supported rhodium(I) catalyst precursors were obtained in reaction of [Rh(OMe)(cod)]<sub>2</sub> with polymeric monoliths containing methyl-imidazolium moieties and applied in 1-hexene hydroformylation at 10 atm ... [+]
New supported rhodium(I) catalyst precursors were obtained in reaction of [Rh(OMe)(cod)]<sub>2</sub> with polymeric monoliths containing methyl-imidazolium moieties and applied in 1-hexene hydroformylation at 10 atm of CO/H<sub>2</sub>. Under solventless conditions with a small amount of P(OPh)<sub>3</sub> as a modifying ligand, [P(OPh)<sub>3</sub>]/[Rh] = 2, ca. 80% of aldehydes with a high n/iso ratio of ca. 6 was obtained in eight successive runs. When P(OCH<sub>2</sub>CF<sub>3</sub>)<sub>3</sub> was used instead of P(OPh)<sub>3</sub>, n/iso ratios up to 49.8 were obtained, however, the systems were active only in two subsequent reactions. With PPh<sub>3</sub> as a modifying ligand, the yield of aldehydes decreased to ca. 20% already in the third run and n/iso was ca. 3. © 2009 Elsevier B.V. All rights reserved. [-]
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