7592
P.-S. Lai et al. / Tetrahedron 67 (2011) 7586e7592
8. (a) Harmata, M. Chem. Commun. 2010, 8886e8903; (b) Harmata, M. Chem.
Supplementary data
Commun. 2010, 8904e8922.
9. Smith, A. G.; Johnson, J. S. Org. Lett. 2010, 12, 1784e1787.
10. Lai, P.-S.; Taylor, M. S. Synthesis 2010, 9, 1449e1452.
11. Lewis acids that provided inferior yields included MeAlCl2, Me2AlCl, TiCl4,
ZnBr2, Me3SiCl, FeCl3, BiCl3, InCl3, and Sc(OTf)3.
Supplementary data associated with this article can be found, in
12. For examples of experimental evidence suggesting a role for catione
p or
cationen interactions in synthetic processes: (a) Knowles, R. R.; Lin, S.; Ja-
cobsen, E. N. J. Am. Chem. Soc. 2010, 132, 5030e5032; (b) Katz, C. E.; Ribelin, T.;
Withrow, D.; Basseri, Y.; Manukyan, A. K.; Bermudez, A.; Nuera, C. G.; Day, V.
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