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....
AS2.2241, capable of reducing acetophenone and α-bromoacetophenone with high stereoselectivity, was isolated from soil samples through a novel screening procedure in which acetophenone was supplied in vapor state as the sole carbon and energy source. The biosynthesis of the ketone reductase in ...
1) selective reduction of α,β-unsaturated ketone 选择性还原α,β-不饱和酮 1. The key steps wereselective reduction of α,β-unsaturated ketone, Shapiro reaction and Koenig-Knorr reactions. 关键反应为选择性还原α,β-不饱和酮,夏皮罗反应,Koenig-Knorr反应。
Chevalley, A., Cherrier, M. V., Fontecilla-Camps, J. C., Ghasemi, M. & Salmain, M. 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 ...
aNoyori’s asymmetric reduction of ketone 141 using ruthenium catalyst 142 gave the (R)-propargylic alcohol in 98% ee. 酮141的Noyori的不对称的减少使用钌催化剂142在98% (ee)给了R - propargylic酒精。 [translate] aThis was followed by Red-Al reduction of the alkyne to selectively yield (E)...
Part 3. Asymmetric Reduction of Some Ketones with Novel NADH Model Compounds, (SS)‐3‐(p‐ Tolylsulfiny... Methyl ethyl ketone, pinacoline and acetophenone are reduced asymmetrically to the corresponding alcohols with a chiral phosphine rhodium complex catalyst, [Rh(NBD) {(R)-PEtMePh}2]...
A selective hydrogenation of carbon-carbon double bond of α,β-unsaturated ketones are obtained when a mixture of limonene, α,β-unsaturated ketone and 10% Pd/C is refluxed with vigorous stirring for 15–45 min. The best results are obtained when a molar ratio limonene:α,β-unsaturated ke...
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) was obtained from a side product of this reaction. On the basis of chemical and spectroscopic evidence, it was shown that these samples ar...
了芳香酮结构对产物对映选择性的影响,发现对映选择性的变化规律符合 Prelog 规则,与羰基相连的两个基团体积 差异越大,对映选择性越好,最高的对映体过量值达到了 96 4%. 关键词:面包酵母;全细胞生物催化;芳香酮;不对称还原;苯乙酮;( S ) -1- 苯基乙醇;正交试验 中图分类号: 643 / @55 文献标识码: A ...
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