On-line chiral analysis using the kinetic method. Academic Article uri icon


  • Chiral analysis of constituents in solution-phase reaction mixtures can be performed by tandem mass spectrometry using the kinetic method to determine the enantiomeric excess (ee). Simply diluting an aliquot of a reaction mixture, adjusting the pH, and adding reagents necessary to form a chiral cluster ion allows chiral analysis. The product of a stereospecific N-selective alkylation reaction, 2-(3-(2-methoxyethoxy)-5-oxo-1,6-naphthyridin-6(5H)-yl)propanoic acid, was monitored for ee during the course of reaction, and it showed the expected inversion without ee erosion. Base-catalyzed racemization of the reaction product showed the expected decrease in ee as the reaction proceeded. The base-catalyzed racemization of ibuprofen was monitored on-line, providing near real-time data on ee.

published proceedings

  • Analyst

author list (cited authors)

  • Bain, R. M., Yan, X., Raab, S. A., Ayrton, S. T., Flick, T. G., & Cooks, R. G.

citation count

  • 9

complete list of authors

  • Bain, Ryan M||Yan, Xin||Raab, Shannon A||Ayrton, Stephen T||Flick, Tawnya G||Cooks, R Graham

publication date

  • April 2016