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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 3673-3682 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enantioselective Addition of Aryl Groups to Aromatic Aldehydes Using Chiral Aryltitanium Binaphthol DerivativesChiral, non-racemic organotitanium reagents are generated in situ from binaphthol, chlorotriisopropoxytitanium and aryl Grignard reagents in tetrahydrofuran (THF). These reagents transfer aryl groups to aromatic aldehydes with high enantioselectivity [eq. (1)-(3)]. By this method, enantiomerically pure benzhydrols are available (3 - 13, Table 1). In the cases, in which the absolute configuration of the products is known, the reaction occurs with relative topicity lk.
    Notes: Die aus chiralem, nicht racemischem Binaphthol, Chlorotriisopropoxytitan und Aryl-magnesiumbromiden in Tetrahydrofuran (THF) in situ erzeugten Organotitanreagentien übertragen die Arylgruppe mit hoher Enantioselektivität auf aromatische Aldehyde [Gleichungen (1)-(3)]. So sind praktisch enantiomerenreine Benzhydrole zugänglich (3 - 13, Tab. 1). Die Reaktion verläuft in den Fällen, in welchen die absolute Konfiguration der Benzhydrole bekannt ist, mit relativer Topizität lk.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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