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Hydrogenation, transition metal

The development of chiral phosphorus ligands has made undoubtedly significant impact on the asymmetric hydrogenation. Transition metal catalysts with efficient chiral phosphorus ligands have enabled the synthesis of a variety of chiral products from prochiral olefins, ketones, and imines in a very efficient manner, and many practical hydrogenation processes have been exploited in industry for the synthesis of chiral drugs and fine chemicals. [Pg.62]

The oxidative addition at a transition metal is utilized in the synthesis of these complexes. The opposite reaction, i.e. reductive elimination, is a general route to the cleavage of the metal-metal bond, especially in complexes also containing a hydrogen-transition metal bond. [Pg.87]

As a result of the recognized role of transition metal hydrides as l reactive intermediates or catalysts in a broad spectrum of chemical reactions such as hydroformylation, olefin isomerization, and hydrogenation, transition metal hydride chemistry has developed rapidly in the past decade (J). Despite the increased interest in this area, detailed structural information about the nature of hydrogen bonding to transition metals has been rather limited. This paucity of information primarily arises since, until recently, x-ray diffraction has been used mainly to determine hydrogen positions either indirectly from stereochemical considerations of the ligand disposition about the metals or directly from weak peaks of electron density in difference Fourier maps. The inherent limi-... [Pg.18]

Brookhart, M. and Green, M.L.H. (1983) Carbon—hydrogen—transition metal bonds./. Organomet. Chem., 250, 395. [Pg.121]

M. Brookhart, and M. L. H. Green, Carbon-Hydrogen-Transition Metal Bonds,... [Pg.288]

The replacement of a nitrogen-bonded hydrogen by a metal ion should form a strong bond. However, due to the weak acidity of the peptide hydrogen it is improbable that alkali or alkaline-earth metal ions would be able to remove this hydrogen. Transition metal ions, however, should be more effective in substitution for the nitrogen-bound hydrogen. The problem with transition metal ions is... [Pg.3600]

Key words Bioconjugation, Directed evolution, Enantioselectivity, Hybrid catalysts, Hydrogenation, Transition metal catalysis... [Pg.63]

Goryachev Yu. M., Dekhteruk V. I. et al. Electron mechanism of baric depedences of hydrogen - transition metal interaction. Proceedings of the Conference on hydrides and frillerenes, Kyiv - Yalta, IPMS NASU, 1999, 11 - 12. [Pg.204]

Transfer Hydrogenations. Transition metal-catalyzed transfer hydrogenation is thought to occur via two different intermediates, monohydrides or dihydrides, depending on the transition metal species employed. For Wilkinson s catalyst the mono-hydridic pathway was shown to be operative with the aid of deuterium labeling experiments (eq 59). ... [Pg.128]

These M-C-H interactions were named agostic interactions by Brookhart and Green [13] in 1983. They reported in detail on agostic interactions in their 1988 review entitled Carbon-Hydrogen-Transition Metal Bonds [14]. ... [Pg.59]

Brookhart M, Green MLH (1988) Carbon-hydrogen-transition metal bonds. Prog Inorg Chem 36 1-124... [Pg.56]

Brookhart, M. Green, M.L.H. Wong, L.L. In Carbon-Hydrogen-Transition Metal Bonds Lippard, S.J., Ed. Progress in Inorganic Chemistry John Wiley Sons New York, NY, 1991 Vol. 36 pp 1-124. [Pg.332]

Brookhart, M. Green, M. L. H. Carbon-hydrogen-transition metal bonds. J. Organomet. Chem. 1983, 250, 395 08. [Pg.30]


See other pages where Hydrogenation, transition metal is mentioned: [Pg.877]    [Pg.627]    [Pg.520]    [Pg.281]    [Pg.218]    [Pg.724]    [Pg.476]    [Pg.415]    [Pg.626]    [Pg.107]    [Pg.515]    [Pg.588]    [Pg.11]    [Pg.1122]   
See also in sourсe #XX -- [ Pg.187 ]




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Aluminium, Hydrogen, and Transition Metals

Bond energies transition-metal—hydrogen

Carbon—transition-metal bonds hydrogen

Catalytic hydrogenation with chiral transition metal complexes

Chiral compounds transition metal carbon-hydrogen

Coverage by Adsorbed H in Hydrogen Evolution Reaction at Transition Metals

Enantioselective synthesis transition metal carbon-hydrogen

Germanium—transition-metal bonds hydrogen

Hydrogen bonding transition metal

Hydrogen bonds involving transition metal atoms

Hydrogen bonds/bonding transition-metal complexes

Hydrogen complex transition metal hydride

Hydrogen generation from boron, transition metal

Hydrogen generation from boron, transition metal nanoparticles

Hydrogen halides transition-metal hydrides

Hydrogen in transition metals

Hydrogen on transition metals

Hydrogen peroxide reaction with transition metal ions

Hydrogen peroxide transition metal macrocyclic

Hydrogen reduced transition metal

Hydrogen reduced transition metal zeolites

Hydrogen transfer reactions catalyzed transition metal complexes

Hydrogen transition

Hydrogen transition metal

Hydrogen transition metal cluster complexes

Hydrogen transition-metal hydrides

Hydrogen-bridged silicon-transition metal

Hydrogen-bridged silicon-transition metal bonds

Hydrogenation Reactions Catalyzed by Transition Metal Complexes

Hydrogenation catalyzed by transition metal

Hydrogenation substrates and transition metal catalysts

Hydrogenation transition metal catalysis

Hydrogenation transition metal catalysts

Hydrogenation transition metal complexes

Hydrogenation using transition metal catalysts

Metal Transition in Hydrogen Under Pressure

Predictions for hydrogen storage in carbon nanostructures coated with light transition metals

Rhodium catalysts transition metal carbon-hydrogen

Silicon-transition metal bonds hydrogen

Some Recent Developments in Hydrogenation Activation of Hydrides by Transition Metal Derivatives

Supported transition metal complex catalysts hydrogenation

Tertiary phosphine-transition metal complexes hydrogenation, catalytic

Transition Metal Catalyzed Hydrogenations, Isomerizations, and Other Reactions

Transition metal catalysis asymmetric hydrogenation

Transition metal catalysts carbon-hydrogen activation

Transition metal complexes homogeneous hydrogenation

Transition metal complexes hydrogen activation

Transition metal complexes hydrogen-deuterium exchange

Transition metal complexes hydrogenation catalyzed

Transition metal complexes, olefin hydrogenation

Transition metal hydrogen bond

Transition metal hydrogen peroxide, binding

Transition metal salts/complexes with hydrogen peroxide

Transition metal-catalyzed hydrogenation

Transition metals elements asymmetric hydrogenation

Transition metals with hydrogen peroxide

Transition-metal hydrides from hydrogen

Transition-metal oxides hydrogen

Transition-metal-catalyzed heterogeneous hydrogenation

Urea-hydrogen peroxide transition metal peroxides

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