Asymmetric Olefin Isomerization of Butenolides via Proton Transfer Catalysis by an Organic Molecule [J. Am. Chem. Soc. ASAP DOI: 10.1021/ja205674x]. Yongwei Wu, Ravi P. Singh, and Li Deng*
Page A left column. At the end of the first paragraph, the statement, “only a single example of olefin isomerization by enantioselective proton transfer catalysis, mediated by a bimetallic gadolinium complex, was reported in the literature.” should be, “only a single example of olefin isomerization generating a new chiral center by enantioselective proton transfer catalysis, mediated by a bimetallic gadolinium complex, was reported in the literature.”
Reference 5 “Saga, Y.; Motoki, R.; Makino, S.; Shimizu, Y.; Kanai, M.; Shibasaki, M. J. Am. Chem. Soc. 2010, 132, 7905.” should be, “(a) Saga, Y.; Motoki, R.; Makino, S.; Shimizu, Y.; Kanai, M.; Shibasaki, M. J. Am. Chem. Soc. 2010, 132, 7905. (b) For a desymmetrization of the meso compound 2,5-diphenylphosphol-3-ene amide via olefin isomerization by proton transfer catalysis in which the asymmetry was induced by an enantioselective deprotonation (83% ee), see: Hintermann, L.; Schmitz, M. Adv. Synth. Catal. 2008, 350, 1469. (c) For a kinetic resolution of racemic 1-methyl-indene via olefin isomerization by proton transfer catalysis in which the asymmetry was induced by an enantioselective deprotonation (enantioselectivity undetermined), see: Ohlsson, L.; Wallmark, I.; Bergson, G. Acta Chem. Scand. 1966, 20, 750.”