C−H Oxygenation Reactions Enabled by Dual Catalysis with Electrogenerated Hypervalent Iodine Species and Ruthenium Complexes
作者:Leonardo Massignan、Xuefeng Tan、Tjark H. Meyer、Rositha Kuniyil、Antonis M. Messinis、Lutz Ackermann
DOI:10.1002/anie.201914226
日期:2020.2.17
The catalytic generation of hypervalent iodine(III) reagents by anodic electrooxidation was orchestrated towards an unprecedented electrocatalytic C−H oxygenation of weakly coordinating aromatic amides and ketones. Thus, catalytic quantities of iodoarenes in concert with catalytic amounts of ruthenium(II) complexes set the stage for versatile C−H activations with ample scope and high functional group
通过阳极电氧化催化生成高价碘(III)试剂,从而实现了对弱配位芳香族酰胺和酮的前所未有的电催化CH氧化。因此,催化量的碘代芳烃与催化量的钌(II)配合物协同作用,为具有广泛范围和高官能团耐受性的通用CH活化奠定了基础。通过实验和计算的详细机理研究证实了碘代芳烃作为电化学相关物种在CH-H氧化中的作用,其中电作为可持续的氧化剂,而分子氢作为唯一的副产物。在没有导向基团的情况下,对位选择性C–H氧合同样被证明是可行的。