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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 1361-1370 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: (Cycloalkylmethyl)bis(η5-cyclopentadienyl)titanium(III) ComplexesReaction of bis(cyclopentadienyl)titanium dichloride (1) and isopropylmagnesium bromide (2) with the methylenecycloalkanes 3-8 (cyclopropane), 35 (cyclobutane), and 37 (cyclopentane) leads to the (cycloalkylmethyl)bis(cyclopentadienyl)titanium(III) compounds 9-14, 36, and 38. The cyclopropylmethyl complexes 12-14, which have at least two geminal methyl substituents, are stable. Compounds 9-11, 36, and 38, in which appropriate substituents are lacking, rearrange by ring opening followed by C = C bond isomerization to give the (η3-allyl)bis(η5-cyclopentadienyl)titanium complexes 23-26 and 40.
    Notes: Bei der Reaktion von Bis(cyclopentadienyl)titandichlorid (1) und Isopropylmagnesiumbromid (2) mit den Methylencycloalkanen 3-8 (Cyclopropan), 35 (Cyclobutan) und 37 (Cyclopentan) entstehen die (Cycloalkylmethyl)bis(cyclopentadienyl)titan(III)-Verbindungen 9-14, 36 und 38. Bei mindestens einer geminalen Dimethylsubstitution sind die Cyclopropylmethyl-Komplexe 12-14 stabil. Bei fehlender oder ungeeigneter Substitution lagern sich die Verbindungen 9-11, 36 und 38 durch Ringöffnung und anschließende C = C-Bindungsisomerisierung in die (η3-Allyl)bis(η5-cyclopentadienyl)titan-Komplexe 23-26 und 40 um.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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