2550-26-7Relevant articles and documents
Hydrogenation of α,β-Unsaturated Carbonyl Compounds by Carbon monoxide and Water with Rh6(CO)16 Catalyst under Mild Conditions
Joh, Takashi,Fujiwara, Keisuke,Takahashi, Shigetoshi
, p. 978 - 980 (1993)
By controlling such factors as the concentration of water and amine, the carbon-carbon double bond of α,β-unsaturated carbonyl compounds could be selectively hydrogenated under mild water-gas shift reaction (WGSR) conditions using a Rh6(CO)16-Et3N catalys
Diastereoselective dl-Hydrocoupling of Benzalacetones by Electroreduction
Kise, Naoki,Kitagishi, Yasuo,Ueda, Nasuo
, p. 959 - 963 (2004)
Electroreduction of benzalacetones with an undivided cell in Et 4NOTs/acetonitrile gave cyclized dl-hydrodimers as mixtures of two diastereomers. The hydrodimerization proceeded stereoselectively to afford linear dl-hydrodimers, and the following cyclization led to two thermodynamically stable diasteromers of cyclopentanols.
Liquid-Phase Regioselective 1,4-Hydrogenation of Benzylidene Ketones on Rh/AIPO4 Catalysts
Cabello, J. A.,Campelo, J. M.,Garcia, A.,Luna, D.,Marinas, J. M.
, p. 1786 - 1790 (1986)
The liquid-phase catalytic hydrogenation of α,β-unsaturated carbonyl compounds, in the p-XC6H4CH=CHCOR form (E isomers; X = H, Me, MeO, Cl; R = Me, Et, n-Pr, i-Pr, n-Bu, t-Bu, n-Pe, Ph) was carried out by using a rhodium catalyst supported at 1 wt percent
Carbonyl regeneration from oximes and semicarbazones by trimethylchlorosilane-dimethylsulphoxide
Ghelfi,Grandi,Pagnoni
, p. 2279 - 2284 (1993)
Treatment of oximes and semicarbazones of saturated and α,β-unsaturated ketones and aldehydes with trimethylchlorosilane-dimethyl sulphoxide in dry acetonitrile affords the corresponding carbonyl compounds in excellent yields under mild conditions.
Enzyme-catalysed enantioselective oxidation of alcohols by air exploiting fast electrochemical nicotinamide cycling in electrode nanopores
Wan, Lei,Heath, Rachel S.,Siritanaratkul, Bhavin,Megarity, Clare F.,Sills, Adam J.,Thompson, Matthew P.,Turner, Nicholas J.,Armstrong, Fraser A.
, p. 4958 - 4963 (2019)
Enantioselective conversion of alcohols to ketones using air as the oxidant is achieved with high rates and efficiency using an indium tin oxide (ITO) electrode in which an alcohol dehydrogenase and a photosynthetic NADPH recycling enzyme are confined within nanopores. The massive catalytic enhancement arising from nanoconfinement is exploited in an air-driven electrochemical cell, which requires no complicating control features yet allows continuous monitoring of the reaction via the current that flows between anode (ITO: Organic chemistry) and cathode (Pt: O2 from air).
Carbonyl regeneration from p-toluensulfonhylhydrazones by trimethylchlorosilane-dimethylsulfoxide
Ghelfi,Grandi,Pagnoni
, p. 1845 - 1850 (1992)
Treatment of p-tosylhydrazones of saturated and α,β-unsaturated ketones and aldehydes with trimethylchlorosilane-dimethyl sulphoxide in dry acetonitrile affords the corresponding carbonyl compounds in excellent yields under mild conditions.
TRANSFER HYDROGENATION BETWEEN ALCOHOLS AND α,β UNSATURATED KETONES WITH RhH(PPh3)3 AS CATALYST. EVIDENCE FOR REGIOSPECIFICITY AND AN UNUSUAL RATE-LIMITING STEP
Beaupere, D.,Bauer, P.,Nadjo, L.,Uzan, R.
, p. C12 - C14 (1982)
In the hydrogen transfer between an alcohol and an α,β-unsaturated ketone with RhH(PPh3)4 as catalyst under mild conditions the breaking of the O-H bond is, unusually, the rate-determining step, and the hydroxylic hydrogen is selectively transferred to the α-carbon of the ketone.
Syntheses of water-soluble octahedral, truncated octahedral, and cubic Pt-Ni nanocrystals and their structure-activity study in model hydrogenation reactions
Wu, Yuen,Cai, Shuangfei,Wang, Dingsheng,He, Wei,Li, Yadong
, p. 8975 - 8981 (2012)
We developed a facile strategy to synthesize a series of water-soluble Pt, PtxNi1-x (0 xNi1-x nanocrystals were effectively controlled by choice of ratios between the Pt and Ni precursors. In a preliminary study to probe their structure-activity dependence, we found that the shapes, compositions, and capping agents strongly influence the catalyst performances in three model heterogeneous hydrogenation reactions.
Homo-coupling reactions of alkenyl- and arylfluorosilanes mediated by a copper(I) salt
Nishihara, Yasushi,Ikegashira, Kazutaka,Toriyama, Fumihiko,Mori, Atsunori,Hiyama, Tamejiro
, p. 985 - 990 (2000)
Homo-coupling reactions of an alkenyl- or arylsilane readily occur with a copper(I) salt in an aprotic polar solvent such as N, N-dimethylformamide or dimethyl sulfoxide under an aerobic condition to give the corresponding conjugated dienes or biaryls, respectively. Optimization of a copper salt and a solvent for the homo-coupling reaction is discussed. The formation of the organocopper intermediates is evidenced by trapping experiments with iodine and by a conjugate addition to methyl vinyl ketone.
Selective oxidation of alcohols with hydrogen peroxide catalyzed by tungstate ions (WO4=) supported on periodic mesoporous organosilica with imidazolium frameworks (PMO-IL)
Karimi, Babak,Rostami, Fatemeh Bakhshandeh,Khorasani, Mojtaba,Elhamifar, Dawood,Vali, Hojatollah
, p. 6114 - 6119 (2014)
Tungstate ions supported on the periodic mesoporous organosilica with ionic liquid frameworks (WO4=@PMO-IL) were found to be a recoverable catalyst system for the highly selective oxidation of various primary or secondary alcohols to the corresponding aldehydes or ketones by 30% H2O2as green oxidant under neutral aqueous reaction conditions. The catalyst can be also recovered and efficiently reused in seven subsequent reaction cycles without any remarkable decreasing in the catalyst activity and selectivity. Moreover, N2sorption analysis, transmission electron microscopy (TEM) images, and thermal gravimetric analysis (TGA) showed that the structure regularity and functional groups loaded of the catalyst were not affected during the reaction process.
