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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 560-565 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of α-Amino-γ-hydroxy Acids by PhotochlorinationThe hydrochlorides of γ-lactones (2a-g) of the following amino acids are obtained by photochlorination and subsequent hydrolysis as mixtures of racemates or diastereomers in about 25% yield: DL-α-aminobutyric acid (1a), L-valine (1b), DL-pseudoleucine (1c), DL-norvaline (1d), L-isoleucine (1e), D-allo-isoleucine (1f), and L-leucine (1g). From a mixture of four lactone hydrochlorides obtained from DL-norleucine (1h) under the same conditions, a δ-lactone (2h) was isolated.
    Notes: Durch Photochlorierung in starker Salzsäure und anschließende Hydrolyse werden die γ-Lacton-hydrochloride 2a-g der folgenden α-Aminosäuren z. T. als Racemate oder Diastereomeren-Gemische in ca. 25 proz. Ausbeute erhalten: DL-α-Aminobuttersäure (1a), L-Valin (1b), DL-Pseudoleucin (1c), DL-Norvalin (1d), L-Isoleucin (1e), D-allo-Isoleucin (1f) und L-Leucin (1g). DL-Norleucin (1h) geht unter analogen Bedingungen in ein Gemisch von 4 Lactonen über, aus dem das δ-Lacton 2h isoliert wurde.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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