由氮杂环卡宾介导的伯膦和仲膦的还原型P-P偶联反应。
The reductive P-P coupling of primary and secondary phosphines mediated by N-heterocyclic carbenes.
作者信息
Schneider Heidi, Schmidt David, Radius Udo
机构信息
Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
出版信息
Chem Commun (Camb). 2015 Jun 25;51(50):10138-41. doi: 10.1039/c5cc02517f. Epub 2015 May 26.
The dehydrogenative coupling of primary and secondary phosphines with the N-heterocyclic carbene iPr2Im (1,3-di-isopropyl-imidazolin-2-ylidene) has been reported. The dehydrogenation of R2PH affords diphosphines R2P-PR2. The reaction of iPr2Im with ArPH2 leads to the formation of NHC phosphinidene adducts iPr2Im[double bond, length as m-dash]PAr and cyclic oligophosphines P4Ar4, P5Ar5 and P6Ar6, depending on the stoichiometry used. The NHC acts in these reactions as a phosphine activator and hydrogen acceptor.
已报道了伯膦和仲膦与N-杂环卡宾iPr2Im（1,3-二异丙基-咪唑啉-2-亚基）的脱氢偶联反应。R2PH的脱氢反应生成二膦R2P-PR2。iPr2Im与ArPH2的反应根据所使用的化学计量比，会生成NHC磷烯加合物iPr2Im=PAr以及环状低聚膦P4Ar4、P5Ar5和P6Ar6。在这些反应中，N-杂环卡宾充当膦活化剂和氢受体。
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