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Synthesis and characterization of crotyl intermediates in Rh-catalyzed hydroformylation of 1,3-butadiene

Crotyl rhodium complexes like (κ2-L)Rh(η3-crotyl) and (κ2-L)Rh(η3-crotyl)(CO) (L = chelating phosphorus ligand) are important intermediates in hydroformylation catalysis of butadiene and related reactions. They are assumed to be responsible for the specific reactivity patterns of conjugated dienes....

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Autori principali: Schmidt, Sebastian (Autore) , Baráth, Eszter (Autore) , Prommnitz, Tanja (Autore) , Rosendahl, Tobias (Autore) , Rominger, Frank (Autore) , Hofmann, Peter (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: October 2, 2014
In: Organometallics
Year: 2014, Volume: 33, Fascicolo: 21, Pages: 6018-6022
ISSN:1520-6041
DOI:10.1021/om500643t
Accesso online:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om500643t
Testo
Note sull'autore:Sebastian Schmidt, Eszter Baráth, Tanja Prommnitz, Tobias Rosendahl, Frank Rominger, and Peter Hofmann
Descrizione
Riassunto:Crotyl rhodium complexes like (κ2-L)Rh(η3-crotyl) and (κ2-L)Rh(η3-crotyl)(CO) (L = chelating phosphorus ligand) are important intermediates in hydroformylation catalysis of butadiene and related reactions. They are assumed to be responsible for the specific reactivity patterns of conjugated dienes. We prepared and characterized by X-ray crystallography several of these complexes with novel chelating bisphosphite ligands. (κ2-L)Rh(η3-crotyl) complexes exhibit a square-planar geometry, while their CO adducts (κ2-L)Rh(η3-crotyl)(CO) are trigonal-bipyramidal with the bisphosphite ligand in ee-bonding mode. Typically, the η3-crotyl unit can be oriented in several diastereomeric ways, of which oftentimes two or more are present in solution and in the solid state.
Descrizione del documento:Gesehen am 26.11.2020
Descrizione fisica:Online Resource
ISSN:1520-6041
DOI:10.1021/om500643t

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