Enantioselective intramolecular Michael addition of nitronates onto conjugated esters: Access to cyclic γ-amino acids with up to three stereocenters (Journal of the American Chemical Society (2009) 131, (16016-16017))

Full text of DOI:10.1021/ja9092083

Enantioselective Intramolecular Michael Addition of
Nitronates onto Conjugated Esters: Access to
Cyclic γ-Amino Acids with up to Three
Stereocenters [J. Am. Chem. Soc. 2009, 131, 16016–
16017].
William
J.
Nodes,
David
R.
Nutt,
Ann M. Chippindale, and Alexander J. A. Cobb
Page 16016. The structures of catalysts C and D in Table 1
are incorrect. Catalyst C, shown below, was synthesized from
hydroquinidine, while catalyst D, shown below, was synthesized
from hydroquinine. The same change applies to structure C on
p S22 of the Supporting Information.
The last sentence of the third paragraph should therefore read,
“Interestingly, the use of hydroquinine-derived catalyst D gives
the oppositely configured product to hydroquinidine-derived
catalyst C...”.
Page 16017. We add two additional references, refs 3d and
5f.
Supporting Information Available: Experimental proce-
dures, characterization data, and CIF and PDB files (corrected).
This material is available free of charge via the Internet at http://
pubs.acs.org.
Literature Cited
(3d) Ye, J.; Dixon, D. J.; Hynes, P. S. Chem. Commun. 2005, 4481.
(5f) Wiesner, M.; Revell, J. D.; Tonazzi, S.; Wennemers, H. J. Am. Chem.
Soc. 2008, 130, 5610.
JA9092083
10.1021/ja9092083
9
10.1021/ja9092083  2010 American Chemical Society
J. AM. CHEM. SOC. 2010, 132, 427 427