Cerium-Catalyzed C–H Functionalizations of Alkanes Utilizing Alcohols as Hydrogen Atom Transfer Agents
作者:Qing An、Ziyu Wang、Yuegang Chen、Xin Wang、Kaining Zhang、Hui Pan、Weimin Liu、Zhiwei Zuo
DOI:10.1021/jacs.0c00212
日期:2020.4.1
the utilization of light energy for the activation of organic substrates. Here, we demonstrate the catalytic application of ligand-to-metal charge-transfer (LMCT) excitation of cerium alkoxide complexes for the facile activation of alkanes utilizing abundant and inexpensive cerium trichloride as the catalyst. As demonstrated by cerium-catalyzed C-H amination and alkylation of hydrocarbons, this reaction
现代光氧化还原催化传统上依赖于金属多吡啶基配合物的金属到配体电荷转移 (MLCT) 激发,以利用光能来活化有机底物。在这里,我们展示了铈醇盐配合物的配体-金属电荷转移(LMCT)激发的催化应用,以利用丰富且廉价的三氯化铈作为催化剂轻松活化烷烃。正如铈催化的 CH 胺化和烃的烷基化所证明的那样,这种反应歧管可以通过直接访问具有挑战性的烷氧基自由基,轻松地将大量醇用作实用和选择性的氢原子转移 (HAT) 试剂。此外,通过一系列光谱实验研究了 LMCT 激发事件,