Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Unsymmetrical ligands

The new ligands were also tested in the hydrogenation of methyl (Z)-a-(N-acetamido)-4-chlorocinnamate. The results are summarized in Table 24.2. The symmetrical bisphospholane ligand 3 delivered chiral N-acylaminoacid methyl-ester with excellent enantioselectivities in all solvents studied. The unsymmetrical ligands 4-6 were less selective and sensitive to the choice of the solvent. [Pg.214]

Enantioselective Catalysis using Sterically and Electronically Unsymmetrical Ligands... [Pg.89]

Electronic differentiation - the expected electronic influence of the unsymmetrical ligand is clearly displayed in the differing lengths of the two Pd-C bonds, with Pd-C(l) (Xrans to phosphorus) be-... [Pg.96]

Figure 18. Predicted variation of normalized shift (5/dp) from Equation 82 for various values of K and P an unsymmetrical ligand (n = 4)... Figure 18. Predicted variation of normalized shift (5/dp) from Equation 82 for various values of K and P an unsymmetrical ligand (n = 4)...
Recently, unsymmetrical ligands of types Ph2PCH2CH2PRPh and Ph2P(CH2) PR2 have been prepared. The approach taken by Grim56 and co-workers is to begin with alkyldiphenylphosphines or dialkylphenylphosphines and to remove a phenyl group with Li in THF (equation 10). [Pg.994]

See other pages where Unsymmetrical ligands is mentioned: [Pg.124]    [Pg.138]    [Pg.432]    [Pg.673]    [Pg.687]    [Pg.721]    [Pg.776]    [Pg.599]    [Pg.1]    [Pg.89]    [Pg.92]    [Pg.97]    [Pg.101]    [Pg.198]    [Pg.830]    [Pg.30]    [Pg.39]    [Pg.185]    [Pg.1331]    [Pg.103]    [Pg.26]    [Pg.26]    [Pg.123]    [Pg.67]    [Pg.246]    [Pg.614]    [Pg.1015]    [Pg.433]    [Pg.103]    [Pg.88]    [Pg.44]    [Pg.191]    [Pg.112]    [Pg.408]    [Pg.1]    [Pg.111]    [Pg.278]    [Pg.279]   
See also in sourсe #XX -- [ Pg.111 ]

See also in sourсe #XX -- [ Pg.227 , Pg.228 , Pg.229 ]

See also in sourсe #XX -- [ Pg.275 ]



SEARCH



Transitions unsymmetrical ligands

Unsymmetric

Unsymmetric Tripod Ligands Related to Tris(pyrazol-l-yl)methane

Unsymmetrical Hybrid Phosphorus Containing Ligands for Rh Catalyzed Asymmetric Hydrogenation

© 2024 chempedia.info