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  • 1
    Electronic Resource
    Electronic Resource
    Stereoisomeric flavour compounds LXVIII. 2-, 3-, and 4-Alkyl-branched acids, part 2: Chirospecific analysis and sensory evaluation (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 6 (1994), S. 427-434 
    Details
    ISSN: 0899-0042
    Keywords: 2-, 3-, and 4-alkyl-branched acids ; enantioselective analysis ; sensory evaluation ; heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin ; octakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-γ-cyclodextrin ; Chamaemelum nobile (L.) Allioni ; Parmesan cheese ; red meat flavour ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Enantioselective GC analysis of 4-ethyloctanoic and 4-methylheptanoic acid, using heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin as the chiral stationary phase, is described and the sensory properties of several 4-alkyl-branched acids, using gas chromatography-olfactometry (GC-O) equipment and octakis(2,3-di-O-methyl-6-tert-butyldimethylsilyl)-γ-cyclodextrin as the stationary phase, are evaluated. The chirospecific analysis of various 2-, 3-, and 4-alkyl-branched acids from commercially available Roman chamomile (Chamaemelum nobile (L.) Allioni), Parmesan cheese, and subcutaneous mutton adipose tissue, using either GC-GC (MDGC) or GC-MS analytical methods, is described. © 1994 Wiley-Liss, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.530060511
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Stereoisomeric flavour compounds LXVII. 2-, 3-, and 4-Alkyl-branched acids, part 1: General approach to the synthesis of the enantiopure acids (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 6 (1994), S. 420-426 
    Details
    ISSN: 0899-0042
    Keywords: synthesis of enantiopure 2-, 3-, and 4-alkyl-branched acids ; diastereomeric phenylglycinol amides ; chain elongation by Arndt-Eistert synthesis ; malonic ester synthesis or via 2-alkylated alkyl carbonitriles ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A general approach to the synthesis of 2-, 3-, and 4-alkyl-branched acids of high enantiomeric purity is described. The enantiopure 2-alkyl-branched acids are prepared via liquid chromatographic resolution of diastereomeric phenylglycinol amides and their absolute configuration is deduced from the 1H-NMR data of the separated diastereomers. Chain elongation methods, by Arndt-Eistert synthesis, via 2-alkylated alkyl carbonitrile or by malonic ester synthesis, are used to prepare 3- and 4-alkyl-branched acids of high configurational purity and known absolute configuration starting from the enantiomeric 2-alkyl-branched acids. © 1994 Wiley-Liss, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.530060510
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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