Palladium-Catalyzed Monoselective Halogenation of CH Bonds: Efficient Access to Halogenated Arylpyrimidines using Calcium Halides
作者:Bingrui Song、Xiaojian Zheng、Jun Mo、Bin Xu
DOI:10.1002/adsc.200900778
日期:2010.2.15
A wide variety of ortho-halogenated arylpyrimidines were prepared with high monoselectivity and functional-group tolerance by usingcalciumhalides as crucial halogenating agents and cupric trifluoroacetate as oxidant in the presence of air.
Palladium-Catalyzed Regioselective C-H Bond ortho-Acetoxylation of Arylpyrimidines
作者:Xiaojian Zheng、Bingrui Song、Bin Xu
DOI:10.1002/ejoc.201000631
日期:——
An efficient and regioselectivepalladium-catalyzed ortho C-H acetoxylation reaction was developed to afford ortho monoacetoxylated arylpyrimidines in good to excellent yields by using cupric trifluoroacetate as a cocatalyst. A wide variety of oxygenated arylpyrimidines were prepared with high regioselectivity and functional group tolerance.
Copper-catalyzed aromatic C–H bond halogenation with lithium halides under aerobic conditions
作者:Song Mo、Yamin Zhu、Zengming Shen
DOI:10.1039/c3ob40185e
日期:——
A concise and practical Cu-catalyzed protocol for the preparation of chloro- and bromoarenes via C–H bond activation has been developed. The advantages of this strategy are the employment of cheap Cu(NO3)2·3H2O, LiX and O2, and its compatibility with both electron-donating and electron-withdrawing substituents on aryl rings.
Cp*Rh(<scp>iii</scp>) and Cp*Ir(<scp>iii</scp>)-catalysed redox-neutral C–H arylation with quinone diazides: quick and facile synthesis of arylated phenols
作者:Shang-Shi Zhang、Chun-Yong Jiang、Jia-Qiang Wu、Xu-Ge Liu、Qingjiang Li、Zhi-Shu Huang、Ding Li、Honggen Wang
DOI:10.1039/c5cc03187g
日期:——
Cp*Rh(iii)- and Cp*Ir(iii)-catalysed direct C–H arylation with quinone diazides provides a facile and redox-neutral access to arylated phenols.
One-Pot Palladium-Catalyzed Cross-Coupling Treble of Borylation, the Suzuki Reaction and Amination
作者:Howard Jong、Stanley T.-C. Eey、Yee Hwee Lim、Sangeeta Pandey、Nurul Azmah Bte Iqbal、Fui Fong Yong、Edward G. Robins、Charles W. Johannes
DOI:10.1002/adsc.201600708
日期:2017.2.20
A methodology for a sequential palladium‐catalyzedcross‐coupling procedure consisting of borylation, the Suzuki reaction and amination has been developed for the assembly of molecules with multi‐aryl backbones. The linchpin of this development is the meta‐terarylphosphine ligand, Cy*Phine, which has been employed as an air‐ and moisture‐stable precatalyst, Pd(Cy*Phine)2Cl2, to improve the efficiency