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Asymmetric hydrogenation of isobutyrophenone using a [(Diphosphine) RuCl2 (1,4-diamine)] catalyst.
[reaction: see text] The use of three chiral 1,4-diamines in the [(diphosphine) RuCl(2) (diamine)] catalyst system is demonstrated in the hydrogenation of acetophenone. The use of a 1,4-diamine… Expand
Synthesis of enantiopure 3,6,7,8-tetrahydrochromeno[7,8-d]imidazoles via asymmetric ketone hydrogenation in the presence of RuCl2[Xyl-P-Phos][DAIPEN]
- A. Palmer, V. Chiesa, Hans Christof Holst, J. L. Paih, A. Zanotti-Gerosa, U. Nettekoven
- 8 September 2008
Abstract The asymmetric hydrogenation of complex heterocyclic ketones 1 in the presence of the novel catalyst RuCl2[(S)-Xyl-P-Phos][(S)-DAIPEN] and a base afforded the corresponding alcohols 2 in… Expand
A Catalyst for Efficient and Highly Enantioselective Hydrogenation of Aromatic, Heteroaromatic, and α,β-Unsaturated Ketones
PhanePhos−ruthenium−diamine complexes catalyze the asymmetric hydrogenation of a wide range of aromatic, heteroaromatic, and α,β-unsaturated ketones with high activity and excellent… Expand
Synthesis and application of a new bisphosphite ligand collection for asymmetric hydroformylation of allyl cyanide.
- Christopher J. Cobley, K. Gardner, +6 authors K. Abboud
- Chemistry, Medicine
- The Journal of organic chemistry
- 19 May 2004
A series of mono- and bidentate phosphites was prepared with (S)-5,5',6,6'-tetramethyl-3,3'-di-tert-butyl-1,1'-biphenyl-2,2'-dioxy [(S)-BIPHEN] as a chiral auxiliary and screened in the asymmetric… Expand
Practical Access to 2‐Alkylsuccinates through Asymmetric Catalytic Hydrogenation of Stobbe‐Derived Itaconates
Enantiomerically pure 2-alkylsuccinates are obtained on a 500-g scale after hydrogenation with the cationic rhodium complexes with tetraalkyl-substituted 1,2-bis(phospholanyl)ethane or -benzene… Expand
Cyclometalated and Alkoxyphenyl-Substituted Palladium Imidazolin-2-ylidene Complexes. Synthetic, Structural, and Catalytic Studies
- N. Stylianides, Andreas A. Danopoulos, David Pugh, and Fred Hancock, A. Zanotti-Gerosa
- 2 October 2007
Some new N,N‘-bis(aryl)imidazolinium salts (3a−h), in which the N-aryl groups have one unsubstituted ortho position and alkyl (Me, Pri) or alkoxy (OMe, OPri) substitution at the other ortho and/or… Expand
Application of Tethered Ruthenium Catalysts to Asymmetric Hydrogenation of Ketones, and the Selective Hydrogenation of Aldehydes
An improved method for the synthesis of tethered ruthenium(II) complexes of monosulfonylated diamines is described, together with their application to the hydrogenation of ketones and aldehydes. The… Expand
Expanding the family of phospholane-based ligands: 1,2-bis(2,5-diphenylphospholano)ethane.
[reaction: see text] 1,2-Bis(2,5-diphenylphospholano)ethane (Ph-BPE) has been synthesized for the first time through employment of an undemanding synthetic pathway. The new ligand exhibits enhanced… Expand
Phosphonites based on the paracyclophane backbone: new ligands for highly selective rhodium-catalyzed asymmetric hydrogenation.
[reaction--see text] The synthesis of new phosphonites with a chiral paracyclophane backbone is described. The rhodium complexes derived from the phosphonites bearing biphenoxy and binaphthoxy… Expand
A concise synthesis of a new xylyl-biaryl diphosphine ligand for asymmetric hydrogenation of ketones
Abstract A concise synthesis of a symmetrical biaryl diphosphine ligand bearing 3,5-dimethylphenyl substituents at phosphorus is described. The ruthenium catalysts [diphosphine RuCl 2 diamine]… Expand