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  • Robust Analytical Methods f...
    Ayers, Sloan; Beutner, Gregory L; Ding, Wei; Higman, Carolyn; Pathirana, Charles; Wethman, Robert

    Organic process research & development, 04/2022, Volume: 26, Issue: 4
    Journal Article

    Having robust and reliable methods for monitoring catalyst activation processes is an important part of ensuring the reproducibility of a catalytic reaction. For asymmetric Diels–Alder reactions, chiral oxazaborolidine or oxazaborolidinium catalysts are powerful reagents that promote these reactions in high yield and selectivity. Supported by mechanistic findings, several modern analytical methods are compared for quantitating the oxazaborolidine catalyst formation from amino alcohol and boroxine to arrive at useful monitoring methods for this important transformation.