对烷烃或烷烃基团的选择性官能团化是催化领域的主要目标。有鉴于此,新泽西州立罗格斯大学Alan S. Goldman等报道合成了一种大体积三磷配体bis(2-di-t-butyl-phosphinophenyl)phosphine (tBuPHPP),在与Ir形成配合物作为催化剂时,形成螯合物结构。这种三磷PPP配体的中心磷原子是二级磷,在与Ir形成配合物时,二级磷中的H原子转移到Ir原子上,三磷配体转化为阳离子型配体tBuPPP。
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参考文献
Benjamin M. Gordon, Nicholas Lease, Thomas J. Emge, Faraj Hasanayn, and Alan S. Goldman*, Reactivity of Iridium Complexes of a Triphosphorus-Pincer Ligand Based on a Secondary Phosphine. Catalytic Alkane Dehydrogenation and the Origin of Extremely High Activity, J. Am. Chem. Soc. 2022
DOI: 10.1021/jacs.1c13309
https://pubs.acs.org/doi/10.1021/jacs.1c13309