Microwave-Promoted Palladium(II)-Catalyzed CP Bond Formation by Using Arylboronic Acids or Aryltrifluoroborates
作者:Mounir Andaloussi、Jonas Lindh、Jonas Sävmarker、Per J.â R. Sjöberg、Mats Larhed
DOI:10.1002/chem.200901473
日期:2009.12.7
first PdII‐catalyzed Parylation has been performed by using palladium acetate, the rigid bidentate ligand dmphen (dmphen=2,9‐dimethyl‐1,10‐phenanthroline), and without the addition of base or acid. Couplings of arylboronic acids or aryl trifluoroborates with H‐phosphonate dialkyl esters were conducted in 30 min with controlled microwave (MW) heating under non‐inert conditions. Aryl phosphites were also
An easy synthesis of aryl phosphonates by oxidation from aryldichlorophosphines with iodine in good yields is described. Aryldichlorophosphines are obtained by reaction of phosphorous trichloride with some aromatics in presence of various Lewis acids. BiCl3 and Bi(OTf)3 are used for the first time and bismuth trichloride is, for the first time in the case of anisole or thioanisole phosphonylation,
Direct C−H Phosphonylation of Electron-Rich Arenes and Heteroarenes by Visible-Light Photoredox Catalysis
作者:Rizwan S. Shaikh、Indrajit Ghosh、Burkhard König
DOI:10.1002/chem.201701283
日期:2017.9.7
the atom economy and allows preparing and modifying complex molecules more easily. . In contrast to the wide applications of aryl phosphonates, their synthesis via direct C-H bond phosphonylation is a less explored area. We report here a general, mild, and broadly applicable visible light photoredox C-H bond phosphonylation method for electron rich arenes and heteroarenes. The photoredox catalytic protocol
Thianthrenium-Enabled Phosphorylation of Aryl C–H Bonds via Electron Donor–Acceptor Complex Photoactivation
作者:Hao Xu、Xufeng Li、Yuzheng Dong、Shuangran Ji、Junze Zuo、Jian Lv、Daoshan Yang
DOI:10.1021/acs.orglett.3c01303
日期:2023.5.26
An efficient strategy for the preparation of aryl phosphonates via blue-light-promoted single electron transfer process of an EDA complex between phosphites and thianthrenium salts has been demonstrated. The corresponding substituted aryl phosphonates were obtained in good to excellent yields, and the byproduct thianthrene can be recovered and reused in quantity. This developed method realizes the
Manganese(III)-mediated direct phosphonylation of arenes
作者:Wei Xu、Jian-Ping Zou、Wei Zhang
DOI:10.1016/j.tetlet.2010.03.029
日期:2010.5
Manganese (III)-promoted direct phosphonylation of mono- and disubstituted arenes with dialkylphosphite afforded regioselective dialkylphosphonates in good yields. The reactions can apply to arenesbearing electron-donating groups and electron-withdrawinggroups such as ester and nitrile.