Versatile Conversion of N‐Heterocyclic Silylene to Silyl Metal Compounds by Insertion of Divalent Silicon into Metal–Carbon and Metal–Hydrogen Bonds |
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Authors: | Dr Yun Xiong Dr Shenglai Yao Prof?Dr Matthias Driess |
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Institution: | Technische Universit?t Berlin, Institute of Chemistry: Metalorganics and Inorganic Materials, Sekr. C2, Strasse des 17. Juni 135, 10623 Berlin (Germany), Fax: (+49)?30‐314‐29732 |
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Abstract: | The facile one‐pot reaction of the stable N‐heterocyclic silylene LSi: 1 (L?(ArN)C(?CH2) CH?C(Me)(NAr), Ar=2,6‐iPr2C6H3) with Me2Zn, Me3Al, H3Al‐NMe3, and MeLi has been investigated. The silicon(II) atom in 1 is capable of insertion into the corresponding M? C and Al? H bonds under very mild reaction conditions. Thus, Me2Zn furnishes the bis(silyl) zinc complex LSi(Me)ZnSi(Me)L 2 as the sole product, irrespective of the molar ratio of the starting materials applied. Moreover, the reactions of 1 with Me3Al, H3Al‐NMe3, and MeLi lead directly to the 1,1‐addition products LSi(Me)(Al(thf)Me2) 3 , LSi(H)(AlH2(NMe3)) 4 , and LSi(Me)Li(thf)3 5 , respectively. All new compounds 2 – 5 were fully characterized by multinuclear NMR spectroscopy, mass spectrometry, elemental analyses, and single‐crystal X‐ray diffraction analyses. |
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Keywords: | dimethyl zinc lithium metal silanide metalation trimethylaluminum |
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