Photoinduced Transition-Metal-Free Cross-Coupling of Aryl Halides with H-Phosphonates
作者:Huiying Zeng、Qian Dou、Chao-Jun Li
DOI:10.1021/acs.orglett.8b04081
日期:2019.3.1
Photoinduced transition-metal- and photosensitizer-free cross-coupling of arylhalides (including Ar–Cl, Ar–Br, and Ar–I) with H-phosphonates (including dialkyl phosphonates and diarylphosphine oxides) is reported. Various functional groups were tolerated, including ester, methoxy, dimethoxy, alkyl, phenyl, trifluoromethyl, and heterocyclic compounds. This simple and green strategy provides a practical
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
A novel CuO-catalyzed coupling reaction of arylhydrazines with trialkylphosphites to afford arylphosphonates is described. The reaction proceeded at 80 °C in air without external reductants, oxidants, and ligands.
A dual catalytic strategy for carbon–phosphorus cross-coupling via gold and photoredox catalysis
作者:Ying He、Hongmiao Wu、F. Dean Toste
DOI:10.1039/c4sc03092c
日期:——
A new method for the P-arylation of aryldiazonium salts with H-phosphonates via dual gold and photoredox catalysis is described.
描述了一种使用双金和光氧化还原催化剂对芳基重氮盐与H-膦酸酯进行P-芳基化的新方法。
Light-Induced Activation of C–X Bond via Carbonate-Assisted Anion−π Interactions: Applications to C–P and C–B Bond Formation
作者:Vishal Jyoti Roy、Sudipta Raha Roy
DOI:10.1021/acs.orglett.2c04208
日期:2023.2.17
presented a carbonate anion assisted photochemical protocol for the C–X bond activation. Anion−π interactions have been leveraged to generate aryl radicals from easily accessible aryl halides that are further utilized in C–P and C–B bond formation reactions with excellent reactivity and broad functional group tolerance. Spectroscopic investigations and DFT studies were conducted for mechanistic insights