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