Download e-book for iPad: Chiral separations by liquid chromatography and related by Hassan Y. Aboul-Enein

By Hassan Y. Aboul-Enein

ISBN-10: 0824740149

ISBN-13: 9780824740146

Unique in its systematic and distinct description of some of the forms, constructions, and homes of chiral desk bound levels (CSPs) and their guidance, 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: manageable optimization options for enantiomeric solution on quite a few kinds of CSPs and new suggestions in liquid chromatography and comparable applied sciences of chiral separations. it's a important source jam-packed with 1200 of the latest and appropriate literature citations.

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69. 70. 71. 72. 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).

46 cm (10 mm). 4 SELECTIVITIES Although about 20 polysaccharide-based CSPs have been commercialized and much work on enantioresolution has been carried out on these phases, it remains very difficult to predict the best CSP for the chiral resolution of a particular compound. It has been observed that most of the resolved racemic compounds contain aromatic rings or groups such as carbonyl, sulfinyl, nitro, amino, and benzoyl. However, some reports have been published on the chiral resolution of nonaromatic racemates on polysaccharide CSPs [61].

On the other hand, amylose derivatives having the substituents at the ortho position also showed characteristic high chiral recognition, comparable to that afforded by the meta and para substituents derivatives. The elution order was not influenced by the change of substituents in either cellulose or amylose derivatives [45]. Similarly, Chankvetadze et al. [24] reported that ortho-substituted phenylcarbamate derivatives of amylose showed high chiral recognition abilities, while Copyright 2003 by Marcel Dekker, Inc.

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

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