Oxidative Phosphonylation of Aromatics with Ammonium Cerium(IV) Nitrate Arylphosphonates 5 and 6 can be prepared in good yields in a one-step synthesis starting from arenes with tri- or diethylphosphites and cerium ammonium nitrate (CAN) as oxidant. The selectivity of the oxidative phosphonylation is relatively low; the reactive species is a phosphite radical cation.
Ruthenium-Catalyzed C–H Activation/Cyclization for the Synthesis of Phosphaisocoumarins
作者:Youngchul Park、Incheol Jeon、Seohyun Shin、Jiae Min、Phil Ho Lee
DOI:10.1021/jo401608v
日期:2013.10.18
ruthenium-catalyzed oxidative cyclization of phosphonic acidmonoesters or phosphinic acids with alkynes has been developed for the synthesis of a wide range of phosphaisocoumarins in good to excellent yields under aerobic conditions. A multitude of arylphosphonic acidmonoesters and arylphosphinic acids having electron-donating and -withdrawing groups were oxidatively cyclized. Various diarylacetylenes
Visible-Light Photo-Arbuzov Reaction of Aryl Bromides and Trialkyl Phosphites Yielding Aryl Phosphonates
作者:Rizwan S. Shaikh、Simon J. S. Düsel、Burkhard König
DOI:10.1021/acscatal.6b02591
日期:2016.12.2
Aryl phosphonates are functional groups frequently found in pharmaceutical and crop protection agents. For their synthesis via C–P bond formation typically transition-metal-catalyzed reactions are used. We report a visible-light photo-Arbuzov reaction as an efficient, mild, and metal-free alternative. Rhodamine 6G (Rh.6G) is used as the photocatalyst, generating aryl radicals under blue light. Coupling
PHOSPHORUS-CONTAINING COMPOUND AND PREPARATION AND USE THEREOF
申请人:VivaVisionShanghaiLtd
公开号:US20200131206A1
公开(公告)日:2020-04-30
The present invention provides a phosphorus-containing compound characterized by being a compound represented by the following structure:
the compound is a novel immune cell migration inhibitor. The compound has good hydrophilicity and can be developed into eye drops. The compound has a strong inhibitory ability to immune cell migration and can relieve the symptoms of most dry-eye patients.
Perfluorocyclopentadienyl Radical Derivative as an Organocatalyst for Oxidative Coupling of Aryl- and Thienylmagnesium Compounds under Atmospheric Oxygen
The oxidative homocoupling reaction of Grignard reagents in the presence of atmosphericoxygen molecules proceeded in the presence of a heptafluorotolyl-substituted perfluorocyclopentadienyl radical. The turnover number (TON) was over 30 for the coupling reactions of PhMgBr to give biphenyl. The organocatalyst could couple thienylmagnesium compounds to give bithiophene derivatives in up to 94% yield