Cyclodextrin-mediated enantioseparations by capillary electrochromatography.

Area of Science:

• Analytical Chemistry
• Separation Science

Background:

• Chiral separations are crucial in pharmaceuticals and chemical analysis.
• Cyclodextrins (CDs) are widely employed as chiral selectors.
• Capillary electrochromatography (CEC) offers high-efficiency separations.

Purpose of the Study:

• To provide a detailed overview of cyclodextrin-based chiral selectors in CEC.
• To describe key techniques utilizing CDs in CEC for enantiomeric separations.

Main Methods:

• Detailed description of three CEC techniques: open-tubular (o-CEC), packed capillary (p-CEC), and monolithic (rod-CEC).
• Utilizing immobilized cyclodextrin derivatives as chiral stationary phases or pseudostationary phases.
• Brief discussion of nanoparticle pseudostationary phase capillary electrochromatography (psp-CEC).

Main Results:

• Demonstration of the versatility of CDs in various CEC formats for chiral recognition.
• Highlighting the effectiveness of o-CEC, p-CEC, and rod-CEC for enantioselective separations.
• Identification of specific advantages and applications for each described CEC technique.

Conclusions:

• Immobilized cyclodextrins are effective chiral selectors across diverse CEC methodologies.
• The described CEC techniques provide powerful tools for resolving chiral compounds.
• Further development in psp-CEC holds promise for advanced chiral separations.