Synthesis of Ni(II) Complexes Supported by Tetradentate Mixed-Donor Bis(amido)/Phosphine/Phosphido Ligands by Phosphine Substituent Elimination,Organometallics

当前位置： X-MOL 学术 › Organometallics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Synthesis of Ni(II) Complexes Supported by Tetradentate Mixed-Donor Bis(amido)/Phosphine/Phosphido Ligands by Phosphine Substituent Elimination
Organometallics ( IF 2.5 ) Pub Date : 2020-05-26 , DOI: 10.1021/acs.organomet.0c00286
Kyounghoon Lee ₁ , Curtis E. Moore ₁ , Christine M. Thomas ₁

Affiliation

A convenient nickel-templated phenyl elimination route is described for the synthesis of phosphide-containing multidentate ligands from triarylphosphine precursors. Treating Ni(COD)₂ with the neutral bis(amine)/bis(phosphine) ligand precursor H₂^4Ph[PNNP] affords bis(amido)/bis(phosphine) complex 1. Treatment of 1 with 1 equiv of KH leads to elimination of a phenyl group from one of the phosphine fragments, generating bis(amido)/phosphine/phosphido complex ^3Ph[PNNP]Ni^– (2). Alternatively, excess KH or ⁿBuLi affords the bis(amido)/bis(phosphide) complex ^2Ph[PNNP]Ni^2– (3 or 4, respectively) by elimination of two phenyl substituents. These reactions are high-yielding and provide a unique and straightforward route to chelating phosphido ligands that would otherwise be challenging to synthesize.

中文翻译：

磷取代基消除合成四齿混合供体双（酰胺基）/膦/磷配体负载的Ni（II）配合物

描述了一种方便的镍模板化的苯基消除途径，用于从三芳基膦前体合成含磷的多齿配体。用中性双（胺）/双（膦）配体前体H ₂^4Ph [PNNP]处理Ni（COD）₂可获得双（酰胺基）/双（膦）配合物1。用1当量的KH处理1会导致从一个膦片段中消除一个苯基，从而生成双（酰胺基）/膦/磷复合物^3Ph [PNNP] Ni ^–（2）。或者，过量的KH或ⁿ BuLi可提供双（酰胺基）/双（磷化物）络合物^2Ph [PNNP] Ni通过消除两个苯基取代基^可得到2-（分别为3或4）。这些反应是高产率的，并提供了螯合磷配体的独特而直接的途径，否则将难以合成。

更新日期：2020-05-26

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11