Allenes for Versatile Iron-Catalyzed C–H Activation by Weak O-Coordination: Mechanistic Insights by Kinetics, Intermediate Isolation, and Computation
作者:Antonis M. Messinis、Lars H. Finger、Lianrui Hu、Lutz Ackermann
DOI:10.1021/jacs.0c04837
日期:2020.7.29
ortho-regioselectivity in proximity to the weakly-coordinating carbonyl group for a range of substituted phenones and allenes. Detailed mechanistic studies, including the isolation of key intermediates, the structural characterization of an iron-metallacycle and kinetic analysis, allowed the sound elucidation of a plausible catalytic working mode. This mechanistic rationale is supported by detailed computational
铁催化的丙二烯加氢芳基化是通过弱苯酮辅助完成的。CH 活化在一系列取代的苯酮和丙二烯的弱配位羰基附近以优异的效率和高邻位区域选择性进行。详细的机理研究,包括关键中间体的分离、铁-金属环的结构表征和动力学分析,可以很好地阐明一种合理的催化工作模式。这种机械原理得到了详细的计算 DFT 研究的支持,这些研究完全解决了多自旋态反应性。此外,催化反应的操作核磁共振监测提供了对铁催化 CH 与丙二烯的烷基化作用模式的详细见解。