75397-16-9Relevant academic research and scientific papers
Oxidative addition of aryl halides to cationic bis(Phosphane)rhodium complexes: Application in C-C bond formation
K?nig, Anja,Fischer, Christian,Alberico, Elisabetta,Selle, Carmen,Drexler, Hans-Joachim,Baumann, Wolfgang,Heller, Detlef
, p. 2040 - 2047 (2017/12/06)
The oxidative addition of chloro-, bromo-and iodobenzene to the cationic bis(phosphane)rhodium complex [Rh(DIPAMP)(MeOH)2]BF4 was investigated. The resulting complexes were characterized by X-ray analysis and NMR spectro-scopy and ap
Profiling the tuneable R-SMS-Phos structure in the rhodium(i)-catalyzed hydrogenation of olefins: The last stand?
Stephan, Michel,?terk, Damjan,Zupan?i?, Borut,Mohar, Barbara
, p. 5266 - 5271 (2011/09/20)
A diversified family of enantiopure P-stereogenic "R-SMS-Phos" {R-SMS-Phos = 1,2-bis[(o-RO-phenyl)(phenyl)phosphino]ethane} ligands wherein R = branched or heteroatom-substituted alkyl, aralkyl, silyl, acyl, sulfonyl, etc. was screened for the Rh(i)-catalyzed hydrogenation of a representative set of olefinic substrates. This systematic and detailed investigation revealed a marked beneficial impact on enantioselectivity and catalyst activity in comparison to Knowles' ultimate DiPAMP {DiPAMP = 1,2-bis[(o-anisyl)(phenyl) phosphino]ethane} design. Mutant ligands with highly enhanced properties possessing particular features wherein the DiPAMP structure is found embedded were identified. The Royal Society of Chemistry 2011.
Asymmetrie Hydrogenation. Dimerization of Solvate Complexes: Synthesis and Characterization of Dimeric [Rh(DIPAMP)]2+2, a Valuable Catalyst Precursor
Preetz, Angelika,Baumann, Wolfgang,Fischer, Christian,Drexler, Hans-Joachim,Schmidt, Thomas,Thede, Richard,Heller, Detlef
, p. 3673 - 3677 (2009/12/08)
The hydrogenation of [Rh(DIPAMP)(NBD)]BF4 (DIPAMP= l,2-bis[(2-methoxyphenyl)(phenylphosphino)]ethane, NBD = 2,5-norbornadiene) in methanol leads not only to the formation of the expected solvate complex [Rh(DIPAMP)(MeOH)2]BF4/s
THE MECHANISM OF ASYMMETRIC HOMOGENEOUS HYDROGENATION. SOLVENT COMPLEXES AND DIHYDRIDES FROM RHODIUM DIPHOSPHINE PRECURSORS
Brown, John M.,Chaloner, Penny A.,Kent, Alexander G.,Murrer, Barry A.,Nicholson, Philip N.,et al.
, p. 263 - 276 (2007/10/02)
Bicyclohepta-2,5-diene and cycloocta-1,5 diene(biphosphine)rhodium tetrafluoroborates react with hydrogen at 1 atmosphere in methanol or other polar solvents.The initial product may be either a solvated dihydride or a solvate; depending on phosphine structure the equilibrium between these two species varies widely.Dihydrides are normally the stable product when the ligand is a monophosphine although (o-methoxyphenyl)methylphenylphosphine is an exception. cis-Chelating biphosphines normally form solvate complexes with no affinity for hydrogen.R-Phenyl bis-diphenylphosphinoethane falls into this category, but the 31P NMR spectra of its complexes demonstrate an equilibrium between monomeric and dimeric species, and addition of triethylamine gives rise to a trimer. trans-Chelating biphosphines show more variable behaviour, and in the case of bis-1,5-diphenylphosphinopentane, a number of complexes, including one requiring C-H activation, are observed.
