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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1991 (1991), S. 823-825 
    ISSN: 0170-2041
    Keywords: Insecticides, enantiomerically pure ; Enantioconvergent process ; Pyrazolines ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatization of insecticidally active rac-pyrazoline 2 with (1S)-(-)-camphanic acid chloride led to the separable diastereomers 3a and 3b. Regioselective cleavage to the enantiomerically pure pyrazolines 2a and 2b was achieved under mild conditions. Diastereomer 3b was transformed into diastereomer 3a by crystallization under equilibrating conditions making the overall process enantioconvergent.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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