ADDITION/CORRECTION pubs.acs.org/JACS
Chiral Bisguanidine-Catalyzed Inverse-Electron-Demand Hetero-Diels Alder Reaction of Chalcones with Azlactones [Journal of the American Chemical Society 2010, 132, 10650–10651. DOI: 10.1021/ja1046928]. Shunxi Dong, Xiaohua Liu, Xiaohong Chen, Fang Mei, Yulong Zhang, Bo Gao, Lili Lin, and Xiaoming Feng* Page 10651 and Supporting Information page S-74. The structure of the proposed transition state in Figure 1 was incorrect and should be shown as follows:
Figure 1. Proposed transition state for the IEDDA reaction of chalcone 3a with azlactone 4a.
This has also been corrected in the Supporting Information. We apologize for these mistakes.
’ ASSOCIATED CONTENT
bS
Supporting Information. Experimental procedures, spectral and analytical data for catalysts and products, and corrected crystallographic data (CIF). This material is available free of charge via the Internet at http://pubs.acs.org.
DOI: 10.1021/ja205501q Published on Web 08/09/2011
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dx.doi.org/10.1021/ja205501q | J. Am. Chem. Soc. 2011, 133, 13761–13761
