Cu-Catalyzed Photoredox Chlorosulfonation of Alkenes and Alkynes
作者:Murat Alkan-Zambada、Xile Hu
DOI:10.1021/acs.joc.9b00238
日期:2019.4.5
Visible-light photoredox chlorosulfonation of alkenes and alkynes is achieved using a Cu photocatalyst. The reactions occur under mild conditions, have broad scope, and have high functional group tolerance.
Visible Light-Mediated Atom Transfer Radical Addition via Oxidative and Reductive Quenching of Photocatalysts
作者:Carl-Johan Wallentin、John D. Nguyen、Peter Finkbeiner、Corey R. J. Stephenson
DOI:10.1021/ja300798k
日期:2012.5.30
visible light-mediated atom transfer radical addition (ATRA) of haloalkanes onto alkenes and alkynes using the reductive and oxidativequenching of [IrdF(CF(3))ppy}(2)(dtbbpy)]PF(6) and [Ru(bpy)(3)]Cl(2) is presented. Initial investigations indicated that the oxidativequenching of photocatalysts could effectively be utilized for ATRA, and since that report, the protocol has been expanded by broadening
48 h at 140 °C) in the absence of any co‐catalyst radical initiator. To the best of our knowledge, our turnovers (ca. 5670) are much higher than that reported hitherto. Quantum mechanical calculations demonstrate that the path involving the activation of carbontetrachloride by (Cy2NNN)RuCl2 is more favoured than the path where carbontetrachloride is activated by (Cy2NNN)RuCl2(η2‐styrene). Density
The cationic ruthenium half-sandwich complex [Cp*Ru(PPh3)(2)(CH3CN)][OTf] (2) (CP* = eta(5)-C5Me5, OTf = SO3CF3) was synthesized by reduction of [Cp*RuCl2](2) with zinc in the presence of NaOTf and subsequent reaction with PPh3. When NaOTf was omitted, the corresponding tetrachlorozincate salts were obtained. Complex2, as well as the salts [Cp*Ru(CH3CN)(3)](2)[ZnCl4] (3) and [Cp*Ru(PPh3)(2)(-)(CH3CN)](2)[ZnCl4]
Synthesis, characterization, X-ray crystallography analysis, and catalytic activity of bis(2-pyridylmethyl)amine copper complexes containing coupled pendent olefinic arms in atom transfer radical addition (ATRA) reactions
作者:Katherine A. Bussey、Annie R. Cavalier、Margaret E. Mraz、Kayode D. Oshin、Amy Sarjeant、Tomislav Pintauer
DOI:10.1016/j.poly.2015.12.043
日期:2016.8
C group in the olefinic arm of a neighboring complex. This interaction led to augmentation of the C C bond due to back-bonding from the metal center. Five solid state structures were obtained for the copper(II) complexes with two also displaying intermolecular associative bonding between olefinic pendent arms and the metal center. X-ray crystallography studies showed that the olefinic arm motifs incorporated