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  • 1
    ISSN: 1434-193X
    Keywords: Autoxidation ; Dimerisation ; Enolates ; Isomerisations ; Strained molecules ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 3-(Phenylsulfanyl)benzvalene (6) was prepared by de-hydrochlorination from the adduct 5 of phenylsulfenyl chloride to benzvalene (4) with potassium tert-butoxide. An autoxidation transformed 6 readily to the tricyclo[3.1.0.02,6]hexanone 7, which was converted into its 4-deuterio derivative [4-D]-7 under mild conditions. The treatment of 7 with potassium hydride in the presence of methyl iodide and 1,3-diiodopropane afforded the alkyl derivatives 9 and 10, respectively, of 7. In the absence of an active alkylating agent, the reaction of 7 with potassium hydride gave rise to the bicyclohexyltricyclohexanes 11 being dimers of 7. Presumably, this process is initiated by the rearrangement of 7 to the bicyclohexenone 13 and completed by a Michael addition of 7 to 13.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1365-1374 
    ISSN: 0009-2940
    Keywords: N ligands ; Chelates ; Coordination modes ; Ligand effects ; Structure-activity relationships ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Monoanionic bi- and tridentate ligand systems emulating the structural features of the well-known poly(pyrazolyl)borates are created by bridging heteroaromatic rings with formally negatively charged p-block elements. Their properties and versatility are exemplified by their complexes with main group metals. Due to their N(σ)-donating and π-interacting ability, as well as the flexibility of the substituent bonding, these ligand systems have the potential to adapt both geometrically and electronically to the coordination requirements of the complexed metal. Within these complexes, the heteroaromatic substituents operate as charge spacers between the formally anionic center and the metal cation without encapsulating either site. This provides possible applications in the creation of reactive soft/hard bimetallic reagents, the realization of multinuclear arrays, and the design of preorganized CVD precursors, particularly en route to III/V-semiconducting thin films.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
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