A Highly Reactive Rhodium(I)-Boryl Complex as a Useful Tool for CH Bond Activation and Catalytic CF Bond Borylation
作者:Michael Teltewskoi、Julien A. Panetier、Stuart A. Macgregor、Thomas Braun
DOI:10.1002/anie.201001070
日期:2010.5.25
CF bond borylation: A 16‐electron rhodium(I)–boryl complex was synthesized by borylation of a rhodium(I)–fluorine complex. The former reacts with benzene or 2,3,5,6‐tetrafluoropyridine by CHactivation. A catalyticCF borylation reaction of pentafluoropyridine was also developed, which uses [Rh(Bpin)(PEt3)3] as a catalyst and Me3SiSiMe3 as a solvent. pin=pinacol.
Suzuki-Miyaura Cross-Coupling Reactions of Highly Fluorinated Arylboronic Esters: Catalytic Studies and Stoichiometric Model Reactions on the Transmetallation Step
Deserves a metal: The Suzuki–Miyaura cross-coupling reaction of highly fluorinated boronic esters, such as 2-Bpin-C5NF4, was investigated by using [Pd(Me)2(tmeda)] or trans-[PdBr4-C6H4CH2CHNHC(O)CH3}CO2Et}(PiPr3)2] as precatalysts. Stoichiometricstudies on the transmetallation step revealed the high reactivity of a Pd fluorido derivative towards 2-BpinC5NF4, which leads to the formation of an ionic
值得一金属:高度氟化的硼酸酯的Suzuki-Miyaura交叉偶联反应,例如2- BPIN-C 5 NF 4,通过使用研究[钯(ME)2(TMEDA)]或反式- [PDBR 4 -C 6 H 4 CH 2 CH NHC(O)CH 3 } CO 2 Et}(P i Pr 3)2 ]作为预催化剂。关于金属转移步骤的化学计量研究表明,Pd氟代衍生物对2-BpinC 5 NF 4具有高反应活性,这导致离子中间体的形成并最终产生交叉偶联产物。