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(15) Liu, Z.; Rigger, L.; Rossi, J.-C.; Sutherland, J. D.; Pascal, R.
Mixed Anhydride Intermediates in the Reaction of 5(4H)-Oxazolones
with Phosphate Esters and Nucleotides. Chem. - Eur. J. 2016, 22,
14940.
AUTHOR INFORMATION
■
Corresponding Author
ORCID
́
(16) Alba, A.-N. R.; Companyo, X.; Valero, G.; Moyano, A.; Rios, R.
Notes
Enantioselective Organocatalytic Addition of Oxazolones to 1,1-
Bis(phenylsulfonyl)ethylene: A Convenient Asymmetric Synthesis of
Quaternary α-Amino Acids. Chem. - Eur. J. 2010, 16, 5354.
The authors declare no competing financial interest.
́
(17) Badiola, E.; Fiser, B.; Gomez-Bengoa, E.; Mielgo, A.; Olaizola,
I.; Urruzuno, I.; García, J. M.; Odriozola, J. M.; Razkin, J.; Oiarbide,
M.; Palomo, C. Enantioselective Construction of Tetrasubstituted
Stereogenic Carbons through Brønsted Base Catalyzed Michael
Reactions: α′-Hydroxy Enones as Key Enoate Equivalent. J. Am.
Chem. Soc. 2014, 136, 17869.
ACKNOWLEDGMENTS
■
We thank Jon Day for help with editing the manuscript and
calculations. We gratefully acknowledge NIH NIGMS
(5R01GM115697) for financial support of this work. Acknowl-
edgment is made to the Donors of the American Chemical
Society Petroleum Research Fund for partial support of this
research with award ACS-PRF 56159-DNI1.
́
(18) Aleman, J.; Milelli, A.; Cabrera, S.; Reyes, E.; Jørgensen, K. A.
Asymmetric 1,4-Addition of Oxazolones to Nitroalkenes by Bifunc-
tional Cinchona Alkaloid Thiourea Organocatalysts: Synthesis of α,α-
Disubstituted α-Amino Acids. Chem. - Eur. J. 2008, 14, 10958.
(19) Wang, C.-M.; Xiao, J.-A.; Wang, J.; Wang, S.-S.; Deng, Z.-X.;
Yang, H. Organocatalytic Enantioselective Conjugate Addition of
Azlactones to Enolizable Linear and Cyclic Enones. J. Org. Chem.
2016, 81, 8001.
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