Some insights into the gold-catalysed A 3 -coupling reaction
作者:Gregory A. Price、Alan K. Brisdon、Simon Randall、Edward Lewis、Daniel M. Whittaker、Robin G. Pritchard、Chris A. Muryn、Kevin R. Flower、Peter Quayle
DOI:10.1016/j.jorganchem.2017.06.019
日期:2017.10
application to A3-coupling reactions is presented. Gold(III) complexes were found to be particularly effective catalysts for the coupling in a range of solvents, however no asymmetric induction was obtained when using chiral gold complexes and the rate of product formation was found to be similar even when using different ligand systems. In-situ NMR analysis of these reactions indicates that decomposition
Synthesis, Characterization, and Catalytic Activity of Chiral NHC Platinum(II) Pyridine Dihalide Complexes
作者:Romain Pertschi、Delphine Hatey、Patrick Pale、Pierre de Frémont、Aurélien Blanc
DOI:10.1021/acs.organomet.9b00850
日期:2020.3.23
A series of platinum(II) dihalide pyridine complexes bearing chiral C2-symmetric N-heterocyclic carbene (NHC) ligands [Pt(NHC*)(Py)(Hal)2] was synthesized in a one-pot procedure and characterized by NMR spectroscopy and single crystal X-ray diffraction (SC-XRD). The complexes were tested for the asymmetric cycloisomerization of enynol into bicyclo[3.1.0]hexanone and feature an excellent catalytic activity
Herrmann, Wolfgang A.; Goossen, Lukas J.; Koecher, Christian, Angewandte Chemie - International Edition, 1997, vol. 35, # 23-24, p. 2805 - 2807
作者:Herrmann, Wolfgang A.、Goossen, Lukas J.、Koecher, Christian、Artus, Georg R. J.
DOI:——
日期:——
Enantioselective Preparation of a Chiral-at-Metal Cp*Ir(NHC) Complex and Its Application in the Catalytic Diboration of Olefins
作者:Rosa Corberán、Vanessa Lillo、José A. Mata、Elena Fernandez、Eduardo Peris
DOI:10.1021/om7004639
日期:2007.8.1
The reaction of (SS)-1,3-di(methylbenzyl)imidazolium chloride with [Cp*IrCl(2)](2) in the presence of NaOAc affords the diastereoselective formation of a Cp*Ir(NHC) complex with a chelating ligand coordinated through the carbene and the ortho-position of one of the phenyl groups. The crystal structure of this new enantiomerically pure compound is described. The complex has been used in the catalytic diboration of olefins, providing high efficiencies and chemoselectivities on the organodiboronate products.