The pentavalent anion formed from the silane and fluoride anion is, as had been previously reported, an excellent hydride reducing agent and even with moderate acceptors (i.e., α-fluoroacetophenone and cyclopropyl phenyl ketone) the anion acts as a SET reagent to give minor amounts of ...
Artificial metalloenzymes derived from bovine β-lactoglobulin for the asymmetric transfer hydrogenation of an aryl ketone – synthesis, characterization and catalytic activity. Dalton Trans. 43, 5482–5489 (2014). Article CAS Google Scholar Merkler, D. J. & Schramm, V. L. Catalytic mechanism ...
The mechanism of the reduction of α,β-unsaturated (steroid) ketones with diborane 喜欢 0 阅读量: 17 作者:Ian Midgley,Carl Djerassi 摘要: 5α-Cholest-8(14)-en-7-one (II) was prepared by a route known to produce authentic steroidal Δ8(14)-7-ketones, and the Δ8(9)-7-ketone (I...
The mechanism of enantioselective ketone reduction with Noyori and Noyori–Ikariya bifunctional catalysts 来自 掌桥科研 喜欢 0 阅读量: 50 作者:PA Dub,JC Gordon 摘要: The catalytic hydrogenation of prochiral ketones with second and third-row transition metal complexes bearing chelating chiral ligands ...
ChemInform Abstract: REDUCTION OF A KETONE BY LITHIUM DIISOPROPYLAMIDE. EVIDENCE FOR AN ELECTRON-TRANSFER MECHANISMdoi:10.1002/chin.197917230diphenylmethane derivativesoxirane derivativesLithiumdiisopropylamid (II) reagiert mit Benzophenon (I) zum Benzhydrol (III) und zu Tetraphenylethylenoxid (IV).L....
Industrial Applications of Asymmetric Synthesis S.Komiya, ...I.Nagasaki, inComprehensive Chirality, 2012 9.5.2.3Hydroboration (Corey–Bakshi–Shibata (CBS) Reduction)3 CBSketonereduction, which uses aboranereagent as a reductant, is part of many processes. The catalysts for this reaction are boron-...
The reduction proceeds by a thiophilic addition of HSon the thioketone most likely via a single electron transfer mechanism.关键词: NADH mimics synthesis asymmetric reduction semi-empirical calculation DOI: 10.1016/S0040-4039(97)10572-X 被引量: 2 ...
Ketones undergo oxidation with strong oxidizing agents like alkaline potassium permanganate solution. There is a break in the carbon chain on oxidation. A mixture of carboxylic acids is the product. The carboxylic acids have fewer carbon atoms than the original ketone. ...
1991). In reverting the reaction during ketone reduction, a hydride ion is formally transferred from NADH to the carbon atom of the carbonyl group, leading to an intermediary alkoxy (alcoholate) anion intermediate with concomitant proton transfer from the Tyr residue to the alcoholate. The Ser ...
Carbon fibers are widely used as reinforcements in poly-ether-ether-ketone (PEEK). In recent years, these materials have also been used for tribological applications. For further optimization of these tribo-materials, the contribution and action mechanisms of carbon fiber reinforcements to the tribolog...