Hybrid bidentate ligand for functional recognition: an application to regioselective CC double bond hydrogenation

2006 ◽  
pp. 2036-2038 ◽  
Author(s):  
Frédéric Goettmann ◽  
Pascal Le Floch ◽  
Clément Sanchez
Keyword(s):  
Double Bond ◽  
Bidentate Ligand ◽  
Bond Hydrogenation

Improved activity and selectivity in carbon-oxygen double bond hydrogenation with Ru/TiO2

1985 ◽  
Vol 29 (2) ◽  
pp. 311-316 ◽  
Author(s):  
A. A. Wismeijer ◽  
A. P. G. Kieboom ◽  
H. van Bekkum
Keyword(s):  
Double Bond ◽  
Bond Hydrogenation

A “Trans-Effect” in Carbon Double-Bond Hydrogenation

2008 ◽  
pp. 99-102
Author(s):  
Andrew Monaghan ◽  
S David Jackson ◽  
Tristan Wright ◽  
Ron Spence ◽  
Arran Canning
Keyword(s):  
Double Bond ◽  
Carbon Double Bond ◽  
Bond Hydrogenation

Electrocatalytic hydrogenation of conjugated enones on nickel boride, nickel, and Raney nickel electrodes

1995 ◽  
Vol 73 (6) ◽  
pp. 846-852 ◽  
Author(s):  
Behzad Mahdavi ◽  
Philippe Chambrion ◽  
Julie Binette ◽  
Eric Martel ◽  
Jean Lessard
Keyword(s):  
Double Bond ◽  
Raney Nickel ◽  
Carbonyl Compounds ◽  
Constant Current ◽  
Electrocatalytic Hydrogenation ◽  
Aqueous Methanol ◽  
Nickel Boride ◽  
Unsaturated Ketones ◽  
Nickel Electrodes ◽  
Bond Hydrogenation

The selectivity of the electrocatalytic hydrogenation (ECH) of conjugated enones to the corresponding carbonyl compounds has been investigated in aqueous methanol under constant current at nickel boride, fractal nickel, and Raney nickel electrodes made of pressed powders. The influence of various parameters (water percentage, pH, concentration of substrate, and current density) on the selectivity of the carbon–carbon double bond hydrogenation was studied with cyclohex-2-en-1-one at nickel boride electrodes. Under given electrolysis conditions, fractal nickel electrodes were found to give the highest selectivity. The selectivity of the ECH of a variety of conjugated enones at fractal nickel electrodes was determined under electrolysis conditions that gave the best selectivity with cyclohexenone at nickel boride electrodes. Keywords: electrocatalytic hydrogenation, α,β-unsaturated ketones, selective hydrogenation, nickel based cathodes.

Synthetic, Structural and Vibrational Spectroscopic Studies in Bismuth(III) Halide/N,N′-Aromatic Bidentate Base Systems. IV. Bismuth(III) Halide/N,N′-Bidentate Ligand (1 : 1) Systems

1997 ◽  
Vol 50 (4) ◽  
pp. 309 ◽  
Author(s):  
Brian R. Davis ◽  
Mark G. Hinds
Keyword(s):  
Double Bond ◽  
Spectroscopic Studies ◽  
Bidentate Ligand ◽  
Unsaturated Ketone ◽  
Aryl Substituent ◽  
Reaction Proceeds

The generation of a number of 1,2-diarylcyclopropane-1,2-diols is reported. Reaction of these in situ with acid gives, primarily, an α,β-unsaturated ketone in which the aryl substituent attached to the double bond is that which is best able to stabilize a benzylic cation. It is proposed that the reaction proceeds by O-protonation of the cyclopropane-1,2-diol, followed by loss of water and opening of the resulting cyclopropyl cation and final deprotonation. Such initial O-protonation contrasts with the C-protonation normally observed in the acidolysis of cyclopropanols and other dialkyl- and alkylaryl-cyclopropane-1,2-diols.

ChemInform Abstract: Pt(0) Complexes as Catalyst Precursors for Homogeneous Carbon-Carbon and Carbon-Oxygen Double Bond Hydrogenation.

ChemInform ◽  
2010 ◽  
Vol 22 (6) ◽  
pp. no-no
Author(s):  
S. PAGANELLI ◽  
U. MATTEOLI ◽  
A. SCRIVANTI ◽  
C. BOTTEGHI
Keyword(s):  
Double Bond ◽  
Bond Hydrogenation

Hydrogen transfer reactions relevant to Guerbet coupling of alcohols over hydroxyapatite and magnesium oxide catalysts

2018 ◽  
Vol 8 (6) ◽  
pp. 1722-1729 ◽  
Author(s):  
Zachary D. Young ◽  
Robert J. Davis
Keyword(s):  
Double Bond ◽  
Benzyl Alcohol ◽  
Magnesium Oxide ◽  
Hydrogen Transfer ◽  
Oxide Catalysts ◽  
Deuterium Exchange ◽  
Transfer Reactions ◽  
Alcohol Dehydrogenation ◽  
Bond Hydrogenation ◽  
Hydrogen Transfer Reactions

The rates of double bond hydrogenation, deuterium exchange, and benzyl alcohol dehydrogenation were compared to those of ethanol coupling.

scholarly journals 5,13-Diethyl-10-methyl-8-heptadecanone: A component of post-1976 Kelex 100

1991 ◽  
Vol 56 (10) ◽  
pp. 2203-2208 ◽  
Author(s):  
Hans-Günter Striegel ◽  
Wolfgang Wiegrebe
Keyword(s):  
Double Bond ◽  
Title Compound ◽  
Aldol Condensation ◽  
Bond Hydrogenation

The title compound was prepared by mixed aldol condensation of 2-ethylhexanal and acetone, double bond hydrogenation, aldol autocondensation of the resulting saturated ketone and finel double bond hydrogenation. It is identical with the ketone C22H44O previously isolated from new Kelex 100 which was erroneously assigned a furoquinoline structure.

Pt0-complexes as catalyst precursors for homogeneous carboncarbon and carbonoxygen double bond hydrogenation

1990 ◽  
Vol 397 (3) ◽  
pp. 375-381 ◽  
Author(s):  
S. Paganelli ◽  
U. Matteoli ◽  
A. Scrivanti ◽  
C. Botteghi
Keyword(s):  
Double Bond ◽  
Bond Hydrogenation

Long-Range Effect of 17-Substituents in 3-Oxo Steroids on 4,5-Double Bond Hydrogenation

1998 ◽  
Vol 63 (10) ◽  
pp. 1528-1542 ◽  
Author(s):  
Romana Šídová ◽  
Karel Stránský ◽  
Alexander Kasal ◽  
Barbora Slavíková ◽  
Ladislav Kohout
Keyword(s):  
Acetic Acid ◽  
Double Bond ◽  
Carboxylic Acids ◽  
Chain Length ◽  
Long Range ◽  
Alkyl Chain ◽  
Platinum Catalyst ◽  
Alkyl Chain Length ◽  
Range Effect ◽  
Bond Hydrogenation

The long-range effect of substituents in the 17-position on the hydrogenation of double bond of the steroidal ∆4-3-ketones in acetic acid on a platinum catalyst is described in a series of testosterone (1) and epitestosterone (5) esters with carboxylic acids of varying alkyl chain length. The ratio 5α- to 5β-products is affected by the nature of substituents in the position 17.

Sign in / Sign up

Export Citation Format

Share Document