A catalytic amount of 1,2-bis(diphenylphosphino)benzene (DPPBz) achieves selective cleavage of sp3-carbon–halogen bond in the iron-catalysed cross-coupling between polyfluorinated arylzinc reagents and alkyl halides, which was unachievable with a stoichiometric modifier such as TMEDA; the selective iron-catalysed fluoroaromatic coupling provides easy and practical access to polyfluorinated aromatic compounds.
在
铁催化下,通过多
氟代芳基
锌试剂与烷基卤化物的交叉耦合反应中,仅使用催化量的1,2-双(
二苯基膦)苯(
DPPBz)就能实现sp3碳-卤素键的选择性断裂,而使用TME
DA等
化学计量修饰剂时这一反应是难以实现的;这种选择性的
铁催化
氟代芳香族耦合反应为制备多
氟代芳香化合物提供了简便实用的途径。