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Enantiomeric separation of some amino acids and derivatives by capillary electrophoresis with 18-crown-6-tetracarboxylic acid as chiral selector

✍ Scribed by Katleen Verleysen; Pat Sandra

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 124 KB
Volume: 11
Category: Article
ISSN: 1040-7685
DOI: 10.1002/(sici)1520-667x(1999)11:1<37::aid-mcs5>3.0.co;2-x

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✦ Synopsis

A number of amino acids and derivatives, bought or synthesized, were Ž . analyzed by capillary electrophoresis CE with optical active 18-crown-6-tetra-Ž . carboxylic acid 18C6H as chiral selector. Besides the primary interaction, i.e., 4 inclusion of the protonated primary amino function in the crown ether cavity, a second interaction mechanism between the substituents on the racemates and the carboxylic acid functions on the crown ether to enhance or suppress enantioselec-Ž . tivity. In certain cases, very high resolutions R ) 5 were noted, e.g., R 30 for s s

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