The low‐cost cobalt(II) catalyst has been used for the first time to achieve P(O)‐radical‐mediated bisfunctionalization of alkenes with diarylphosphine oxide and peroxides. This simple process is performed under mild conditions to afford a wide variety of phosphonation‐peroxidation products in a one‐pot manner. Computational studies are carried out to provide a theoretical support for the P(O)‐radical‐involved
Catalytic epoxidation of unfunctionalized alkenes by dinuclear nickel(II) complexes
作者:Minze T. Rispens、Onko Jan Gelling、AndréH.M. de Vries、Auke Meetsma、Fré van Bolhuis、Ben L. Feringa
DOI:10.1016/0040-4020(96)00030-0
日期:1996.3
The synthesis, crystal and molecular structure and catalytic activity in epoxidation reactions of new dinuclear nickel(II)-complexes, octahedral μ-diacetato-μ-[2,6-bis[N-2-(2′-pyridylethyl) formimidoyl]phenolato]bisnickel(II)·perchlorate·methanol (6) and square planar μ-hydroxo-μ-[2,6-bis[N-((S)-1-benzyl-2-yl-pyrrolidine)formimidoyl]phenolato]bisnickel(II)·bisperchlorate (7), are described. For the
合成,晶体和分子结构和催化活性在新的双核镍的环氧化反应(II)-complexes,八面体μ -diacetato- μ - [2,6-双[ Ñ -2-(2'-吡啶基)亚胺甲基]苯酚]双镍(II)·高氯酸盐·甲醇(6)和方形平面μ-羟基-μ- [2,6-双[ N -((S)-1-苄基-2-吡咯烷)甲亚氨基]苯酚基]双镍描述了(II)·双高氯酸盐(7)。为了制备7,从(S)开始,开发了一条新的5步方法制备高手性双胺(S)-苄基-2-氨基甲基-吡咯烷(19))-脯氨酸。以双镍(II)配合物6和7有效催化次氯酸钠和叔丁基过氧化氢作为末端氧化剂对未官能化烯烃的环氧化,使用反式-β-甲基苯乙烯可达到165的周转率(34)。环氧化可能通过自由基中间体(例如OCl·)进行,在相转移条件下未获得对映选择性。在使用叔丁基氢过氧化物作为末端氧化剂的环氧化反应中,以反式-二苯乙烯(30)为底物获得了43的周转率
Copper(I) Catalyzed Differential Peroxidation of Terminal and Internal Alkenes Using TBHP
作者:Bilal Ahmad Mir、Suresh Rajamanickam、Pakiza Begum、Bhisma K. Patel
DOI:10.1002/ejoc.201901689
日期:2020.1.16
A TBHP mediated carbonylation–peroxidation of styrene, α‐peroxidation of α‐substituted unsymmetrical internalalkenes and concurrent peroxidation–carbonylation–cycloalkylation/cycloetherifiction of internal cyclic alkene (indene) have been developed.
Diverse Pathways for the Palladium(II)-Mediated Oxidation of Olefins by <i>tert</i>-Butylhydroperoxide
作者:Jin-Quan Yu、E. J. Corey
DOI:10.1021/ol0262340
日期:2002.8.1
[reaction: see text] New procedures are described for the palladium-catalyzed oxidation of olefins by tert-butylhydroperoxide under slightly basic conditions in CH(2)Cl(2) solution at 0-25 degrees C.
Nitration–Peroxidation of Alkenes: A Selective Approach to β-Peroxyl Nitroalkanes
作者:Yuanjin Chen、Yangyang Ma、Liangkui Li、Hao Jiang、Zhiping Li
DOI:10.1021/acs.orglett.9b00266
日期:2019.3.1
Nitration–peroxidation of alkenes for the synthesis of β-peroxyl nitroalkanes has been developed by using tert-butyl nitrite and tert-butyl hydroperoxide. The method presents a new and selective difunctionalization of alkenes to introduce a nitro group and a peroxyl group across the double bonds of alkenes under mild conditions. A radical reaction pathway is proposed by experimental and theoretical