One-pot cascade synthesis of α-diketones from aldehydes and ketones in water by using a bifunctional iron nanocomposite catalyst
作者:Tao Song、Xin Zhou、Xiaoxue Wang、Jianliang Xiao、Yong Yang
DOI:10.1039/d0gc03739g
日期:——
A new methodology for the synthesis of α-diketones was reported via a one-pot cascade process from aldehydes and ketones catalyzed by a bifunctional iron nanocompositeusing H2O2 as a green oxidant in water. The one-pot strategy showed excellent catalytic stability, comprehensive suitability of substrates and important practical utility for directly synthesizing biologically active and medicinally
据报道,通过双锅铁纳米复合物在水中使用H 2 O 2作为绿色氧化剂,通过醛和酮的一锅级联过程,合成了一种合成α-二酮的新方法。一锅法显示出优异的催化稳定性,底物的全面适用性和重要的实际实用性,可通过间歇过程直接合成具有生物活性和医学价值的N-杂环。
Synthesis of 1,2-Diketones by the Transition Metal-Catalyst-Free Reaction of α-Oxo Acid Chlorides or Oxalyl Chloride with Organostannanes
作者:Taigo Kashiwabara、Masato Tanaka
DOI:10.1021/jo802814r
日期:2009.5.15
The reaction of an α-oxo acid chloride with an organostannane proceeds transition metal-catalyst-free to afford a 1,2-diketone in an excellent yield. In addition, a sequence comprising pretreatment of oxalylchloride with an organostannane and a subsequent treatment with another organostannane also works as a convenient modification.
Polyfluoroaryl organometallic compounds. Part XVI. Reactions of organolithium compounds with halogenated benzils
作者:R. D. Chambers、M. Clark
DOI:10.1039/p19720002469
日期:——
Reactions of alkyl- or aryl-lithiums with decafluorobenzil gave adducts which undergo rapid pentafluorophenyl migration. A variety of products were obtained after hydrolysis, depending on the lithio-derivative used: ketoalcohols, a benzo[b]furan derivative (from C6F5Li), and bis(pentafluorophenyl)methyl pentachlorobenzoate (from C6Cl5Li). The mechanisms of these processes are discussed. Some analogous
烷基锂或芳基锂与十氟苯甲酰的反应生成加合物,该加合物经历了快速的五氟苯基迁移。水解后,根据所使用的硫代衍生物,可得到多种产品:酮醇,苯并[ b ]呋喃衍生物(来自C 6 F 5 Li)和双(五氟苯基)五氯苯甲酸二甲酯(来自C 6 Cl 5 Li)。 。讨论了这些过程的机制。描述了一些类似的苯甲酰反应用于比较,并研究了这些过程中各组的相对迁移能力。
A Bifunctional Iron Nanocomposite Catalyst for Efficient Oxidation of Alkenes to Ketones and 1,2-Diketones
作者:Tao Song、Zhiming Ma、Peng Ren、Youzhu Yuan、Jianliang Xiao、Yong Yang
DOI:10.1021/acscatal.9b05197
日期:2020.4.17
sites of Fe–Nx and Fe phosphate, as oxidation and Lewis acid sites, were simultaneously integrated into a hierarchical N,P-dual doped porous carbon. As a bifunctional catalyst, it exhibited high efficiency for direct oxidativecleavage of alkenes into ketones or their oxidation into 1,2-diketones with a broad substrate scope and high functional group tolerance using TBHP as the oxidant in water under