Transfer hydrogenation and transfer hydrogenolysis. X. Selective hydrogenation of methyl linoleate by indoline and isopropyl alcohol

1977 ◽  
Vol 54 (4) ◽  
pp. 144-149 ◽  
Author(s):  
T. Nishiguchi ◽  
T. Tagawa ◽  
H. Imai ◽  
K. Fukuzumi
Keyword(s):  
Methyl Linoleate ◽  
Selective Hydrogenation ◽  
Isopropyl Alcohol ◽  
Transfer Hydrogenation

scholarly journals Manganese Catalyzed Asymmetric Transfer Hydrogenation of Ketones Using Chiral Oxamide Ligands

Synlett ◽  
2019 ◽  
Vol 30 (04) ◽  
pp. 503-507 ◽  
Author(s):  
Jacob Schneekönig ◽  
Kathrin Junge ◽  
Matthias Beller
Keyword(s):  
Isopropyl Alcohol ◽  
Ruthenium Catalyst ◽  
Hydrogen Donor ◽  
Transfer Hydrogenation ◽  
Asymmetric Transfer Hydrogenation ◽  
Reaction Conditions ◽  
Active Systems ◽  
Manganese Catalysts

The asymmetric transfer hydrogenation of ketones using isopropyl alcohol (IPA) as hydrogen donor in the presence of novel manganese catalysts is explored. The selective and active systems are easily generated in situ from [MnBr(CO)5] and inexpensive C 2-symmeric bisoxalamide ligands. Under the optimized reaction conditions, the Mn-derived catalyst gave higher enantioselectivity compared with the related ruthenium catalyst.

scholarly journals Homogeneous Transfer Hydrogenation of Methyl Linoleate

1976 ◽  
Vol 25 (3) ◽  
pp. 164-165
Author(s):  
Kazuo FUKUZUMI ◽  
Takeshi NISHIGUCHI ◽  
Tomohiko TAGAWA ◽  
Hideaki IMAI
Keyword(s):  
Methyl Linoleate ◽  
Transfer Hydrogenation

scholarly journals Selective Hydrogenation of Phenol to Cyclohexanol over Ni/CNT in the Absence of External Hydrogen

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 846 ◽  
Author(s):  
Changzhou Chen ◽  
Peng Liu ◽  
Minghao Zhou ◽  
Brajendra K. Sharma ◽  
Jianchun Jiang
Keyword(s):  
Reaction Time ◽  
Physicochemical Properties ◽  
Efficient Method ◽  
Selective Hydrogenation ◽  
Transfer Hydrogenation ◽  
Impregnation Method ◽  
Complete Conversion ◽  
Phenol Derivatives ◽  
Successive Step ◽  
Icp Analysis

Transfer hydrogenation is a novel and efficient method to realize the hydrogenation in different chemical reactions and exploring a simple heterogeneous catalyst with high activity is crucial. Ni/CNT was synthesized through a traditional impregnation method, and the detailed physicochemical properties were performed by means of XRD, TEM, XPS, BET, and ICP analysis. Through the screening of loading amounts, solvents, reaction temperature, and reaction time, 20% Ni/CNT achieves an almost complete conversion of phenol after 60 min at 220 °C in the absence of external hydrogen. Furthermore, the catalytic system is carried out on a variety of phenol derivatives for the generation of corresponding cyclohexanols with good to excellent results. The mechanism suggests that the hydrogenation of phenol to cyclohexanone is the first step, while the hydrogenation of cyclohexanone for the generation of cyclohexanol takes place in a successive step. Moreover, Ni/CNT catalyst can be magnetically recovered and reused in the next test for succeeding four times.

scholarly journals The products of partial hydrogenation some higher polyethylenic esters

1929 ◽  
Vol 122 (790) ◽  
pp. 563-570 ◽  
Keyword(s):  
Fatty Acid ◽  
Methyl Oleate ◽  
Methyl Linoleate ◽  
Fatty Acid Ester ◽  
Selective Hydrogenation ◽  
Acid Ester ◽  
Methyl Linolenate ◽  
Partial Hydrogenation ◽  
Octadecenoic Acids ◽  
Preceding Communication

It is well known that, when an unsaturated higher fatty acid ester (such as methyl linoleate or linolenate) is hydrogenated, the process is largely selective, and no fully-saturated ester is produced until nearly 90 per cent, of the polyethylenic ester has been transformed into monoethylenic compounds ( i. e ., methyl oleate and iso-oleates). Accordingly, if the monoethylenic esters produced by selective hydrogenation of, for example, methyl linolenate. CH 3 . CH 2 . CH : CH . CH 2 . CH : CH. CH 2 . CH : CH. [CH 2 ] 7 . COOMe were a mixture of the esters of Δ 9 : 10 -, Δ 12 : 13 -, and Δ 15 : 16 -octadecenoic acids in more or less equivalent proportions, it should be possible to determine the position of the ethylenic linkages in the original compound by careful oxidation of the mixture of methyl oleates formed, according to the methods given in the preceding communication.

Nano-NiFe2O4 as an efficient catalyst for regio- and chemoselective transfer hydrogenation of olefins/alkynes and dehydrogenation of alcohols under Pd-/Ru-free conditions

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52495-52499 ◽  
Author(s):  
Soumen Payra ◽  
Arijit Saha ◽  
Subhash Banerjee
Keyword(s):  
Isopropyl Alcohol ◽  
Transfer Hydrogenation ◽  
Efficient Catalyst

Here, we have demonstrated magnetic nano-NiFe2O4 catalyzed transfer hydrogenation of olefins/alkynes using isopropyl alcohol as source of hydrogen under ligand and Ru/Pd-free conditions and dehydrogenation of alcohols under oxidant-free conditions.

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