Electrophoresis, Vol.35, No.19, 2752-2758, 2014
Synthesis of novel perphenylcarbamated beta-cyclodextrin based chiral stationary phases via thiol-ene click chemistry
Novel cyclodextrin (CD) chiral stationary phases (CD-CSPs) with well-defined structure have been successfully synthesized by immobilization of mono/di(10-undecenoyl)-perphenylaminocarbonyl -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 - 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.