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Synthesis of a square-planar rhodium alkylidene N-heterocyclic carbene complex and its reactivity toward alkenes

AuthorsPalacios, Laura ; Giuseppe, Andrea di ; Pascal, Simon; Cunchillos, Carmen ; Castarlenas, Ricardo ; Pérez-Torrente, Jesús J. ; Lahoz, Fernando J. ; Dixneuf, Pierre H.; Oro, Luis A.
Issue Date2011
PublisherAmerican Chemical Society
CitationOrganometallics 30(19): 5208-5213 (2011)
AbstractThe first rhodium alkylidene square-planar complex stabilized by an N-heterocyclic carbene ligand, RhCl(=CHPh)(IPr)PPh3 (2; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-carbene), has been prepared by reaction of RhCl(IPr)(PPh3)2 (1) with phenyldiazomethane and its dynamic behavior in solution studied. Treatment of 2 with alkenes results in the formation of the η2-olefin complexes RhCl(η2- CH2=CHR)(IPr)PPh3 (3, R = H; 4, R = Ph; 5, R = OEt) and new olefins arising from the coupling of the alkylidene with the alkenes, likely via a metallacyclobutane intermediate. © 2011 American Chemical Society.
Publisher version (URL)http://dx.doi.org/10.1021/om2005782
Identifiersdoi: 10.1021/om2005782
issn: 0276-7333
e-issn: 1520-6041
Appears in Collections:(ISQCH) Artículos
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