A Simple Method for the Determination of Enantiomeric Excess and Identity of Chiral Carboxylic Acids
Leo A. Joyce, Marc S. Maynor, Justin M. Dragna, Gabriella M. da Cruz, Vincent M. Lynch, James W. Canary, and Eric V. Anslyn* [J. Am. Chem. Soc., 2011, 133, 13746–13752]
Page 13749. In Figure 5, the stereochemistry of the bound guest was incorrectly drawn. The correct structure should be the following:
Figure 5. Newman projections for host 1 with each enantiomer of PBA bound. An M-propeller gives (+) chirality for the orientation of the quinoline electronic dipole moments.
On the bottom right column of the same page, the assignment of propeller twists was incorrectly made based on Figure 5. It should read “Thus, the (R)-enantiomer leads to a P-type propeller while the (S)-enantiomer prefers an M type propeller (Figure 5).
JA205775G