Matches in SemOpenAlex for { <https://semopenalex.org/work/W1036456023> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W1036456023 endingPage "427" @default.
- W1036456023 startingPage "419" @default.
- W1036456023 abstract "Chromatographic behaviour of mandelic acid and its (methyl, ethyl,n-propyl and n-butyl) esters have been studied in RP-HPLC system modified with α-, β-, γ-cyclodextrins and permethylated β-cyclodextrin. It has been found that although native cyclodextrins form with esters a relatively stable complexes of 1:1 stoichiometry, which do not recognize enantiomers. On the contrary, permethylated β-cyclodextrin permits efficient separation of optical isomers. Improved separations have been observed with the lengthening of aliphatic chain in an ester molecule. The enantiomers of esters have been always eluted with the same sequence: first R(-) enantiomer, second the S(+) one, while the order was inverse for free mandelic acid optical isomers. This difference may suggest dissimilar manner of attachment. The attempts to discuss the results in the light of Dalgliesh three point attachment concept have been undertaken. It was assumed that hydrophobic interactions between methyl groups of permethylated β-cyclodextrin and alkyl group of ester produce diversity in attachment of enantiomers. In optimization procedure i.e. to obtain base line separation at the shortest time of analysis three parameters have been taken into account; temperature, methanol concentration and native β-cyclodextrin addition. In effect the use of addition of β-cyclodextrin is worth to recommendation." @default.
- W1036456023 created "2016-06-24" @default.
- W1036456023 creator A5025087653 @default.
- W1036456023 creator A5028328509 @default.
- W1036456023 creator A5063198211 @default.
- W1036456023 creator A5075699729 @default.
- W1036456023 date "2002-01-01" @default.
- W1036456023 modified "2023-09-23" @default.
- W1036456023 title "Cyclodextrins as chiral additives for chromatographic separation of some mandelic acid esters into enantiomers" @default.
- W1036456023 hasPublicationYear "2002" @default.
- W1036456023 type Work @default.
- W1036456023 sameAs 1036456023 @default.
- W1036456023 citedByCount "0" @default.
- W1036456023 crossrefType "journal-article" @default.
- W1036456023 hasAuthorship W1036456023A5025087653 @default.
- W1036456023 hasAuthorship W1036456023A5028328509 @default.
- W1036456023 hasAuthorship W1036456023A5063198211 @default.
- W1036456023 hasAuthorship W1036456023A5075699729 @default.
- W1036456023 hasConcept C178790620 @default.
- W1036456023 hasConcept C185592680 @default.
- W1036456023 hasConcept C2778735290 @default.
- W1036456023 hasConcept C2779433975 @default.
- W1036456023 hasConcept C2779607525 @default.
- W1036456023 hasConcept C2780263894 @default.
- W1036456023 hasConcept C43617362 @default.
- W1036456023 hasConcept C486523 @default.
- W1036456023 hasConcept C73826308 @default.
- W1036456023 hasConceptScore W1036456023C178790620 @default.
- W1036456023 hasConceptScore W1036456023C185592680 @default.
- W1036456023 hasConceptScore W1036456023C2778735290 @default.
- W1036456023 hasConceptScore W1036456023C2779433975 @default.
- W1036456023 hasConceptScore W1036456023C2779607525 @default.
- W1036456023 hasConceptScore W1036456023C2780263894 @default.
- W1036456023 hasConceptScore W1036456023C43617362 @default.
- W1036456023 hasConceptScore W1036456023C486523 @default.
- W1036456023 hasConceptScore W1036456023C73826308 @default.
- W1036456023 hasIssue "3" @default.
- W1036456023 hasLocation W10364560231 @default.
- W1036456023 hasOpenAccess W1036456023 @default.
- W1036456023 hasPrimaryLocation W10364560231 @default.
- W1036456023 hasRelatedWork W1040330144 @default.
- W1036456023 hasRelatedWork W1523892959 @default.
- W1036456023 hasRelatedWork W1536899278 @default.
- W1036456023 hasRelatedWork W1974389636 @default.
- W1036456023 hasRelatedWork W1983390448 @default.
- W1036456023 hasRelatedWork W1983731537 @default.
- W1036456023 hasRelatedWork W1991428377 @default.
- W1036456023 hasRelatedWork W1999894945 @default.
- W1036456023 hasRelatedWork W2051066241 @default.
- W1036456023 hasRelatedWork W2096911065 @default.
- W1036456023 hasRelatedWork W2290250924 @default.
- W1036456023 hasRelatedWork W2300043811 @default.
- W1036456023 hasRelatedWork W2362464697 @default.
- W1036456023 hasRelatedWork W2366766403 @default.
- W1036456023 hasRelatedWork W2385886583 @default.
- W1036456023 hasRelatedWork W2433421315 @default.
- W1036456023 hasRelatedWork W3024197231 @default.
- W1036456023 hasRelatedWork W3043407143 @default.
- W1036456023 hasRelatedWork W189399706 @default.
- W1036456023 hasRelatedWork W2876332615 @default.
- W1036456023 hasVolume "47" @default.
- W1036456023 isParatext "false" @default.
- W1036456023 isRetracted "false" @default.
- W1036456023 magId "1036456023" @default.
- W1036456023 workType "article" @default.