Scalable, Electrochemical Oxidation of Unactivated C–H Bonds
作者:Yu Kawamata、Ming Yan、Zhiqing Liu、Deng-Hui Bao、Jinshan Chen、Jeremy T. Starr、Phil S. Baran
DOI:10.1021/jacs.7b03539
日期:2017.6.7
A practical electrochemical oxidation of unactivated C–H bonds is presented. This reaction utilizes a simple redox mediator, quinuclidine, with inexpensive carbon and nickel electrodes to selectivelyfunctionalize “deep-seated” methylene and methine moieties. The process exhibits a broad scope and good functional group compatibility. The scalability, as illustrated by a 50 g scale oxidation of sclareolide
Selective C(sp<sup>3</sup>
)−H Aerobic Oxidation Enabled by Decatungstate Photocatalysis in Flow
作者:Gabriele Laudadio、Sebastian Govaerts、Ying Wang、Davide Ravelli、Hannes F. Koolman、Maurizio Fagnoni、Stevan W. Djuric、Timothy Noël
DOI:10.1002/anie.201800818
日期:2018.4.3
A mild and selectiveC(sp3 )-Haerobicoxidationenabled by decatungstatephotocatalysis has been developed. The reaction can be significantly improved in a microflow reactor enabling the safe use of oxygen and enhanced irradiation of the reaction mixture. Our method allows for the oxidation of both activated and unactivated C-H bonds (30 examples). The ability to selectively oxidize natural scaffolds
Fluorination of some highly functionalized cycloalkanes: chemoselectivity and substrate dependence
作者:Attila Márió Remete、Melinda Nonn、Santos Fustero、Matti Haukka、Ferenc Fülöp、Loránd Kiss
DOI:10.3762/bjoc.13.233
日期:——
A study exploring the chemical behavior of some dihydroxylated β-amino ester stereo- and regioisomers, derivedfromunsaturated cyclic β-amino acids is described. The nucleophilic fluorinations involving hydroxy-fluorine exchange of some highly functionalized alicyclic diol derivatives have been carried out in view of selective fluorination, investigating substrate dependence, neighboring group assistance
Petrow; Sopow, Sb. Statei Obshch. Khim., 1953, p. 853,855
作者:Petrow、Sopow
DOI:——
日期:——
<i>N</i>-Ammonium Ylide Mediators for Electrochemical C–H Oxidation
作者:Masato Saito、Yu Kawamata、Michael Meanwell、Rafael Navratil、Debora Chiodi、Ethan Carlson、Pengfei Hu、Longrui Chen、Sagar Udyavara、Cian Kingston、Mayank Tanwar、Sameer Tyagi、Bruce P. McKillican、Moses G. Gichinga、Michael A. Schmidt、Martin D. Eastgate、Massimiliano Lamberto、Chi He、Tianhua Tang、Christian A. Malapit、Matthew S. Sigman、Shelley D. Minteer、Matthew Neurock、Phil S. Baran
DOI:10.1021/jacs.1c03780
日期:2021.5.26
taking a first-principles approach guided by computation, these new mediators were identified and rapidly expanded into a library using ubiquitous buildingblocks and trivial synthesis techniques. The ylide-based approach to C–H oxidation exhibits tunable selectivity that is often exclusive to this class of oxidants and can be applied to real-world problems in the agricultural and pharmaceutical sectors