Schenck ene reaction-catalyzed ene reactions have been developed which can afford high yields and selectivities at significantly lower temperatures, making the ene reaction a useful C–C forming tool for the synthesis of complex molecules and natural products.Singlet-oxygen ene reaction...
1. The Schenck Ene Reaction: Diastereoselective Oxyfunctionalization with Singlet Oxygen in Synthetic Applications [J] . Michael Prein, Waldemar Adam Angewandte Chemie . 1996,第5期 机译:Schenck Ene反应:在合成应用中使用单线态氧进行非对映选择性氧化官能化 2. DIASTEREOSELECTIVE SINGLET OXYGEN ENE ...
基于(±)-Steenkrotin A去甲基类似物构建四氢呋喃环的合成尝试 分子内carbonyl-ene反应构建七元环 原位激发的单线态氧作为亲烯体发生的Schenck-ene反应,生成烯丙基过氧醇再与羰基分子内缩合得到过氧缩酮 至此已经完成了(±)-Steenkrotin A中关键的[3.4.5]三环骨架的构建,得到了关键合成中间体三环产物解决了极具...
如图 1B 所示, 从生源途径上分析,该类分子基本上都是来源于一种很简单的线性前体5或6。简而言之,从化合物5出发,可以与单线态氧气发生[4+2]环加成反应得到六元环过氧化物7;或者,7也可以从前体6出发,经过Schenck-ene反应和oxa-Michael加成反应得到。此后,化合物7经历串联的Kornblum-DeLa Mare rearrangement/ hem...
完成(-)-2的全合成后,作者将注意力转向光诱导单线态氧的Schenck-ene反应以构建(+)-1的过氧桥。然而,当(-)-2暴露于紫外光(365 nm)时,即使在O2和光敏剂存在下,未观察到(+)-1,反而是观察到了唯一产物(+)-4。随后,作者用365 nm紫外线照射(-)-2的甲醇溶液仅以14%的分离收率得到(+)-4,其中81%的(-...
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ChemInform Abstract: Regioselectivity of the Singlet Oxygen Ene Reaction (Schenck Reaction) with Vinylsilanes.photochemistryradiation chemistrychemoluminescenceorgano-silicon compoundsacyclic C derivativesoxidationdehydrogenationozonolysisChemInform is a weekly Abstracting Service, delivering concise information at a ...
(1995), ChemInform Abstract: Regio- and Diastereoselective Ene Reaction of 1O2 (Schenck Reaction) for Preparative Organic Chemistry. ChemInform, 26: no. doi: 10.1002/chin.199528288 Author Information Inst. Org. Chem., Univ., D-97074 Wuerzburg, Germany Publication History Issue published online: ...
Novel polyols are synthesized in a one‐pot, tandem reaction approach. First, singlet oxygen is used as oxidant in the photochemical Schenck‐Ene reaction to obtain allyl hydroperoxides of triglycerides, which are reacted in situ to the corresponding epoxy alcohols catalyzed by titanium(IV) iso...
Investigates the diastereoselectivity of the Schenck ene reaction intensively. Ene reaction of singlet oxygen with electronrich versus electron-poor olefins; Methodology used to conduct the study; What the results of the study revealed.AdamWaldemar...