Synthesis of Isoindoles by One-Electron Reductions of Dibenzo[1,4]diazocines
作者:Marcel Bovenkerk、Birgit Esser
DOI:10.1002/ejoc.201403315
日期:2015.2
A synthetic protocol to isoindoles is reported through one-electronreductions of dibenzo[1,4]diazocines. The utility of the approach has been demonstrated through the synthesis of six novel isoindole derivatives. Photophysical measurements revealed emissions between 440 and 460 nm. A reaction mechanism, supported by experimental results and quantum chemical calculations, is postulated.
Direct and selective synthesis of 3-arylphthalides via nickel-catalyzed aryl addition/intramolecular esterification
作者:Qing Qiang、Feipeng Liu、Zi-Qiang Rong
DOI:10.1016/j.tet.2021.132162
日期:2021.6
Herein we report a nickel-catalyzed aryl addition/intramolecular esterification in a cascade fashion. Under the combination of commercially available nickel precursor and tridentate ligand, the one pot protocol offers a direct, simple and regioselective approach to access 3-aryl phthalide derivatives from two readily available substrates with good efficiency, broad scope as well as satisfactory functional
Carboxylate-Directed Addition of Aromatic C–H Bond to Aromatic Aldehydes under Ruthenium Catalysis
作者:Hiroki Miura、Sachie Terajima、Tetsuya Shishido
DOI:10.1021/acscatal.8b00680
日期:2018.7.6
We report that ruthenium complexes effectively catalyzed the carboxylate-directed addition of aromatic C–H bonds to aldehydes. The reactions of aromatic acids with a variety of aromatic aldehydes including unactivated ones proceeded efficiently to give the corresponding isobenzofuranone derivatives in high yields. The combination of ruthenium(II) complexes with tricyclohexylphosphine led to highly
Irradiation of flavonols (1) in methanol gave 3-arylphthalides (3) which were formed via the diketones (4). Metal ions (Cu2+, Ni2+, Fe3+, Co2+ and Be2+) inhibited this rearrangement.