Reversible Concerted Metalation–Deprotonation C–H Bond Activation by [Cp*RhCl 2 ] 2

Reversible Concerted Metalation–Deprotonation C–H Bond Activation by [Cp*RhCl 2 ] 2
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[Cp*RhCl 2 ] 2 可逆协同金属化 - 去质子化 C - H 键激活

DOI:
10.1021/acs.joc.9b01716
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发表时间:
2019
期刊:
The Journal of Organic Chemistry
影响因子:
--
通讯作者:
Jones, William D.
Jones, William D.
中科院分区:
--
文献类型:
--
作者:
VanderWeide, Andrew I.;Brennessel, William W.;Jones, William D.

文献摘要

相似文献

研究了8种对位取代苯基吡啶类化合物与母体Cp*RhCl(κ-C,N-NC_5 H_4-C_6 H_4)的协同金属化-去质子化交换反应的可逆性.平衡常数的确定,和自由能被用来提取最重要的参数,控制的热力学。Keq值被发现最好的相关性与heterolytic C-H键强度,但在某种程度上,是不明显的考虑这些激活的亲电性。
The reversibility of the concerted metalation–deprotonation exchange of eight para-substituted phenylpyridines is examined with the parent Cp*RhCl(κ-C,N-NC5H4–C6H4). Equilibrium constants are determined, and the free energies are used to extract the most important parameters that control the thermodynamics.Keqvalues are found to correlate best with heterolytic C–H bond strengths but in a way that is not obvious considering the electrophilic nature of these activations.