Synthesis of Halogenated Carboxylic Acids and Amino Acids

Inadvertently, we failed to include the contribution of Rios, Moyano et al. on the organocatalytic conjugate addition of fluorobis(phenylsulfonyl) methane and fluoromalonate to unsaturated aldehydes^¹,² and only cited an independent subsequent publication by Cordova et al.^³ We are very grateful to Dr. Ramon Rios for bringing this omission to our attention and would like to apologize for this unintentional oversight.(1) Companyo, X.; Hejnova, M.; Kamlar, M.; Vesely, J.; Moyano, A.; Rios, R. Tetrahedron Lett. 2009, 50, 5021.(2) Alba, A.-N.; Companyo, X.; Moyano, A.; Rios, R. Chem. Eur. J. 2009, 15, 7035.(3) Ullah, F.; Zhao, G.-L.; Deiana, L.; Zhu, M.; Dziedzic, P.; Ibrahem, I.; Hammar, P.; Sun, J.; Córdova, A. Chem. Eur. J. 2009, 15, 10013.