Unexpected Silaazetidine Formation in the Thermolysis of thf‐Supported Silanimine Et2Si=N–SitBu3·thf |
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Authors: | Frauke Schödel Inge Sänger Michael Bolte Hans‐Wolfram Lerner |
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Institution: | Institut für Anorganische Chemie, Goethe‐Universit?t, Max‐von‐Laue‐Str. 7, 60438 Frankfurt am Main, Germany |
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Abstract: | The silyl amide Et2SiCl‐NLi‐SitBu3 can be cleanly prepared from precursor silylamine Et2SiCl‐NH‐SitBu3 and LinBu]. The CF3SO3SiMe3 induced LiCl elimination of Et2SiCl‐NLi‐SitBu3 in thf afforded a 2‐silaazetidine derivative by 2+2] cycloaddition of Et2Si=N–SitBu3 with Et2Si(OCH=CH2)–NH–SitBu3. X‐ray quality crystals of this 2‐silaazetidine derivative (triclinic, space group P$\bar{1}$ ) were grown from benzene at room temperature. The starting material for this approach, Et2SiCl–NH–SitBu3, is water‐sensitive. Hydrolysis of Et2SiCl‐NH‐SitBu3 gave tBu3SiNH3]Cl along with (Et2SiO)n oligomers. The hydro chloride tBu3SiNH3]Cl could be isolated and was characterized by X‐ray crystallography (trigonal, space group P$\bar{3}$ ). |
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Keywords: | Silaazetidine Cycloaddition Silene Silanimine X‐ray diffraction |
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