Abstract
Novel cyclodextrin (CD) chiral stationary phases (CD-CSPs) with well-defined structure have been successfully synthesized by immobilization of mono/di(10-undecenoyl)-perphenylaminocarbonyl β-CD on the 3-mercaptopropyl functionalized silica gel via thiol-ene click chemistry. The phenyl carbamate groups on the rims of CD extended the cavity of CD-CSPs, which facilitated the formation of inclusion complex with various types of racemic compounds under RP mode, and also improved the π-π stacking interaction, dipole-dipole interaction, and hydrogen bonding interaction with racemic compounds under normal phase mode. Fifteen racemic compounds were successfully separated on this CD-CSP with HPLC, and the chromatographic results also demonstrated that thiol-ene click chemistry affords a facile approach for preparation of CSPs.
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