Efficient Homocoupling of Aryl- and Alkenylboronic Acids in the Presence of Low Loadings of [{Pd(μ–OH)Cl(IPr)}2]
作者:Cezary Pietraszuk、Sylwia Ostrowska、Szymon Rogalski、Jan Lorkowski、Jędrzej Walkowiak
DOI:10.1055/s-0036-1591602
日期:2018.8
NHC–palladium(II) complex [Pd(μ–OH)Cl(IPr)}2] (IPr = bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) catalyzes the oxidative coupling of a broad spectrum of aryl- and alkenylboronic acids at loadings down to 5 ppm. At the concentration of 0.05 mol% the catalyst permits an efficient reaction under base-free conditions.
NHC-钯(II)配合物 [Pd(μ-OH)Cl(IPr)}2](IPr = 双(2,6-二异丙基苯基)咪唑啉-2-亚基)催化广谱芳基-和烯基硼酸,负载量低至 5 ppm。在 0.05 mol% 的浓度下,催化剂允许在无碱条件下进行有效反应。