1,3,2-Diazasiloles derived from 1,2-bis(trimethylsilylimino)acenaphthene |
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Authors: | Fedushkin I. L. Khvoinova N. M. Fukin G. K. |
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Affiliation: | 1.G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603950, Nizhnii Novgorod, Russia Federation ; |
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Abstract: | The reduction of 1,2-bis(trimethylsilylimino)acenaphthene (tms-BIAN, 1) with metallic lithium in toluene affords the dilithium salt (tms-BIAN)Li2· 1,3,2-Diazasiloles (tms-BIAN)SiCl2 (2) and (tms-BIAN)SiMe2 (3) were prepared by the reactions of (tms-BIAN)Li2 with SiCl4 and Me2SiCl2, respectively. The reaction of (tms-BIAN)Li2 with an excess of Me2SiCl2 produces (Cldms-BIAN)SiMe2 (4), where Cldms-BIAN is 1,2-bis(chlorodimethylsilylimino)-acenaphthene. The compound (tms-BIAN)(SiCl3)2 (5) containing two different silyl substituents (Me3Si and Cl3Si) at each nitrogen atom was synthesized by the reaction of compound 1 with Cl3SiSiCl3. The elimination of SiCl4 from compound 5 is accompanied by cyclization to give derivative 2. Compounds 2-5 were characterized by 1H, 13C, and 29Si NMR spectroscopy. The crystal structures of 2-5 were established by X-ray diffraction. |
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