Chiral separations by liquid chromatography and related by Hassan Y. Aboul-Enein

By Hassan Y. Aboul-Enein

Unique in its systematic and particular description of a number of the forms, constructions, and houses of chiral desk bound levels (CSPs) and their education, software, and destiny scope, this quantity highlights an collection of liquid chromatographic ways, together with sub- and super-critical fluid chromatography, capillary electrochromatography, and skinny layer chromatography. Readers will locate: potential optimization concepts for enantiomeric answer on quite a few varieties of CSPs and new techniques in liquid chromatography and similar applied sciences of chiral separations. it's a priceless source full of 1200 of the newest and proper literature citations.

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Example text

The energies of interaction of ethanol and 2-propanol with amylose tris(3,5dimethylphenylcarbamate) phases were calculated. The energies of interaction of ethanol, 2-propanol, and their mixtures in different ratios are calculated and presented in Table 3. The energy of interaction G and the energy factor (for ethanol and 2-propanol) F are calculated by the following equations [63]. G ¼ RT ln k ð1Þ Fet or Fpr ¼ VE ð2Þ where G; R; T ; Fet ; Fpr ; V , and E are the energy of interaction, the gas constant, absolute temperature, energy factors for ethanol and 2-propanol, volume of ethanol or 2-propanol, and energy of interaction of ethanol or 2propanol with amylose tris(3,5-dimethylphenylcarbamate), respectively.

Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved. FIGURE 12 Chromatograms of enantiomeric resolution of nebivolol on amylose carbamate CSPs. (a)–(c) Chiralpak AD with (a) ethanol, (b) 1-propanol, and (c) 2-propanol. (d, e) Chiralpak AD-RH with (d) ethanol and (e) 1-propanol, separately, as the mobile phase. (From Ref. ) cellulose phenylcarbamate derivatives with ortho substituents have poor chiral resolving power. The superiority of 5-chloro-2-methylphenylcarbamate over the corresponding dimethyl and dichlorophenylcarbamate derivatives of amylose was demonstrated.

73. 74. 75. 76. 77. 78. 79. 80. 81. ), The Royal Society of Chemistry, Chromatography Monographs, Cambridge (1988). Terfloth G, J Chromatogr A 906: 301 (2001). Mourier PA, Eliot E, Caude RH, Rosset RH, Tambute AG, Anal Chem 57: 2819 (1985). Macaudiere P, Caude M, Rosset R, Tambute A, J Chromatogr 405: 135 (1987). Lee CR, Porziemsky JP, Aubert MC, Krstulovic AM, J Chromatogr 539: 55 (1991). Biermanns P, Miller C, Lyon V, Wilson W, LC-GC 11: 744 (1993). Pettersson P, Markides KE, J Chromatogr A 666: 381 (1994).

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