Benign Perfluoroalkylation of Aniline Derivatives through Photoredox Organocatalysis under Visible-Light Irradiation
作者:Sebastián Barata-Vallejo、Damian E. Yerien、Al Postigo
DOI:10.1002/ejoc.201501189
日期:2015.12
Fil: Barata Vallejo, Sebastian. Universidad de Buenos Aires. Facultad de Farmacia y Bioquimica. Departamento de Quimica Organica; Argentina. Consejo Nacional de Investigaciones Cientificas y Tecnicas; Argentina
菲尔:巴拉塔瓦列霍,塞巴斯蒂安。布宜诺斯艾利斯大学。Facultad de Farmacia y Bioquimica。Departamento de Quimica Organica; 阿根廷。Consejo Nacional de Investigaciones Cientificas y Tecnicas;阿根廷
Heterogeneous Photoinduced Homolytic Aromatic Substitution of Electron-Rich Arenes with Perfluoroalkyl Groups in Water and Aqueous Media - A Radical-Ion Reaction
作者:Sebastián Barata-Vallejo、Marina Martín Flesia、Beatriz Lantaño、Juan E. Argüello、Alicia B. Peñéñory、Al Postigo
DOI:10.1002/ejoc.201201271
日期:2013.2
transfer (PET) substitutionreaction of electron-rich aromatic nuclei with perfluoroalkyl Rf groups was carried out in water or aqueous mixtures to render substitution products resulting from replacement of aromatic H atoms with the Rf moiety in good yields (57–88 %). Some mechanistic aspects are discussed, supporting the notion of a PET reaction leading to a classical radical homolyticaromatic substitution
富电子芳香核与全氟烷基 Rf 基团的光诱导电子转移 (PET) 取代反应在水或水性混合物中进行,以良好的产率 (57-88%) 提供由 Rf 部分取代芳香族 H 原子产生的取代产物)。讨论了一些机理方面,支持 PET 反应的概念,导致经典的自由基均裂芳烃取代 (HAS),然后是电子转移 (ET),然后是质子转移 (PT) 序列。提出了一种叠加在氧化还原过程上的自由基机制来解释产品的形成。
A General, Regiospecific Synthetic Route to Perfluoroalkylated Arenes via Arenediazonium Salts with R<sub>F</sub>Cu(CH<sub>3</sub>CN) Complexes
A mild method of converting arylamines into perfluoroalkylatedarenes is described. Relatively stable RFCu(CH3CN) complexes are used as perfluoroalkylating agents, which react smoothly with arenediazoniumsalts to produce various perfluoroalkylarenes in good yields. Based on the results of clock trapping experiments with diallyl ether, a radical process might be involved in the reaction.
Radical fluoroalkylation reactions of (hetero)arenes and sulfides under red light photocatalysis
作者:Damian E. Yerien、M. Victoria Cooke、M. Cecilia García Vior、Sebastián Barata-Vallejo、Al Postigo
DOI:10.1039/c9ob00486f
日期:——
Fluoroalkylation reactions of (hetero)aromatics have been accomplished through the low-power illumination from red LEDs (λmax = 635 nm) of commercially available perfluoroalkyl iodides RF-I and phthalocyanine zinc salt as photocatalyst in MeCN : DMF solvent mixture. This methodology has been extended to the perfluorobutylation of sulfides. As far as we are concerned, this is the first report on a perfluoroalkylation