Addition/Correction pubs.acs.org/JACS
Correction to “Enantioconvergent Synthesis of Functionalized γ‑Butyrolactones via (3 + 2)-Annulation” C. Guy Goodman, Morgan M. Walker, and Jeffrey S. Johnson* J. Am. Chem. Soc. 2015, 137, 122−125DOI: 10.1021/ja511701j S Supporting Information *
Supporting Information. Some of the catalyst identifiers (A−G) used in the Supporting Information did not match those shown in the Communication. We have updated the Supporting Information to eliminate this discrepancy. Prof. D. E. Ward (University of Saskatchewan) alerted us to several relevant publications involving enantioconvergent proline-catalyzed aldol reactions of chiral racemic electrophiles. We thank Prof. Ward for bringing these examples to our attention. Reference 4 should begin, “For the dynamic reduction of α-keto esters and subsequent diastereoselective lactonization see: (a) Steward, K. M.; Gentry, E. C.; Johnson, J. S. J. Am. Chem. Soc. 2012, 134, 7329−7332.” The references shown as ref 1 below should then follow as refs 4b−e.
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ASSOCIATED CONTENT
S Supporting Information *
Experimental procedures and spectral and HPLC data (corrected). This material is available free of charge via the Internet at http://pubs.acs.org.
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REFERENCES
(1) For dynamic aldolization of chiral aldehydes with proline and related organocatalysts, see: (b) Reyes, E.; Córdova, A. Tetrahedron Lett. 2005, 46, 6605−6609. (c) Ward, D. E.; Jheengut, V.; Akinnusi, O. T. Org. Lett. 2005, 7, 1181−1184. (d) Ward, D. E.; Jheengut, V.; Beye, G. E.; Gillis, H. M.; Karagiannis, A.; Becerril-Jimenez, F. Synlett 2011, 508−512. (e) Bergeron-Brlek, M.; Teoh, T.; Britton, R. Org. Lett. 2013, 15, 3554−3557.
Published: March 9, 2015 © 2015 American Chemical Society
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DOI: 10.1021/jacs.5b00790 J. Am. Chem. Soc. 2015, 137, 3716−3716
