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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 482 (1981), S. 65-72 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions and Bridging of 1,2-Diaza-3-sila-5-cyclopentenes1,2-Diaza-3-sila-5-cyclopentenes react with butyllithium to give lithium salts. In reactions of the lithium salts with halosilanes (1-7), trimethyltinchloride (8) or methyliodide (9) substituted compounds are obtained by LiHal elimination. Bromosuccinimide brominates the methylene group of the ring system (10). Bridging of 1,2-diaza-3-sila-5-cyclopentenes by boryl and silyl groups are described (11-13). In the reaction of trifluorophenylsilane with lithiated 1, 2-tert.-butyl-4-lithio-3,3,5-trimethyl-4-fluorodimethylsilyl-1,2-diaza-3-sila-5-cyclopentene, which is stable in solution, a second substitution takes place (14). The thermal elimination of LiF from lithiated 1 leads to the formation of the spirocyclic compound 15. The n.m.r. and mass spectra of the compounds are reported.
    Notes: 1,2-Diaza-3-sila-5-cyclopentene reagieren mit Butyllithium unter Bildung von Lithiumsalzen. In Umsetzungen der Lithiumsalze mit Halogensilanen (1-7), Trimethylzinnchlorid (8) und Methyliodid (9) werden Substitutionsverbindungen unter LiHal-Abspaltung erhalten. Bromsuccinimid bromiert die Methylengruppe des Ringsystems (10). Verknüpfungen der 1,2-Diaza-3-sila-5-cyclopentene über Boryl- und Silylgruppen werden beschrieben (11-13). Trifluorphenylsilan reagiert mit dem in Lösung stabilen lithiierten 1, 2-tert.-Butyl-4-lithio-3,3,5-trimethyl-4-fluordimethylsilyl-1,2-diaza-3-sila-5-cyclopenten, unter Zweitsubstitution (14). Die thermische LiF-Abspaltung aus lithiiertem 1 führt zur Bildung der spirocyclischen Verbindung 15. Die NMR- und Massenspektren der Verbindungen werden mitgeteilt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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