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....
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)-...
The Corey-Itsuno Reduction, also known as the Corey-Bakshi-Shibata (CBS) reduction, is a chemical reaction in which an achiral ketone is enantioselectively... MO Reduction - 《Comprehensive Organic Name Reactions & Reagents》 被引量: 0发表: 2010年 ...
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 ...
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 ...
A strain producing2-oxoaldehyde reductasewas isolated from LB culture medium containing methylglyoxal. 紫外分光光度法测得酶活力表明,该菌有较强的醛酮还原酶活力;并对温度和pH值对酶活力的影响作了分析。 6) reduction reaction of ketone 酮还原反应 ...
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...
酮还原酶 1. Methods:By reverse PCR,mutated DNA fragment SP in KR6 ketoreductase gene of S. 方法:利用反向PCR技术,扩增红色糖多孢菌KR6酮还原酶基因突变DNA片段SP(KR6酶中Gly1141Ala1142替换成SerPro),克隆于pWHM3上构建染色体同源重组质粒pWHM3-SP。 更多例句>> 6...
contacting a ketone compound of the formula ##STR10## wherein R1, X and Y are as previously defined, and R2is an alkylene group of 1 to 4 carbon atoms joining --X and ##STR11## through from 1 to 2 carbon atoms; with a microorganism capable of catalyzing the stereoselective reduction...