References
- G. Gao, C, Lv, Q. Li, L. Ai, and J. Zhang, Enantiomeric discrimination of a-hydroxy acids and N-Ts-a-amino acids by 1H NMR spectroscopy, Tetrahdron lett., 56, 6742 (2015).
- B. Altava, M. I. Burguete, N. Carbo, J. Escorihuela, and S. V. Luis, Vhiral bis(amino amides) as chiral solvating agents for enantiomeric excess determination of a-hydroxy and arylpropionic acids, Tetrahedron: Asymmetry, 21, 982 (2010).
- Y. Chen and L. Deng, Asymmetric alcoholysis of cyclic anhydride, Chem. Rev.,103(8), 2965 (2003).
- A. C. Spivey and B. I. Andrews, Catalysis of the asymmetric desymmetrization of cyclic anhydrides by nucleophilic ring-opening with alcohols, Angew. Chem. Int. Ed., 40(17), 3131 (2001).
- S. K. Tian, Y. Chen, J. Hang, L. Tang, P. Macdaid, and L. Deng, Asymmetric organic catalyst with modified cinchona alkaloids, Acc. Chem. Res., 37(8), 621 (2004).
- Y. Chen, S. K. Tian, and L. Deng, A highly enantioselective desymmetrization of cyclic anhydrides with modified cinchona alkaloids, J. Am. Chem. Soc., 122(39), 9542 (2000).
- C. Bolm, I. Schiffers, C. L. Dinter, and A. Gerlach, Practical and highly enantioselective ring-opening of cyclic meso-anhydrides mediated by cinchona alkaloids, J. Org. Chem., 65(21), 6984 (2000).
- A. Peschiulli, Y. Gun'k, and S. J. Connon, Highly enantioselective desymmetrization of meso cyclic anhydrides by a bifunctional thiourea-based organocatalyst at low catalyst loading and room temperature, J. Org. Chem., 73(6), 2454 (2008).
- T. Okino, Y. Hoashi, and Y. Takemoto, Enantioselective michael reaction of malonates to nitroolefins catalyzed by bifunctional organocatalysis, J. Am. Chem. Soc., 125, 12672 (2003)
- T. Ema, D. Tanida, and T. Sakai, Versatile and practical chiral shift reagent with hydrogen bond donor/acceptor sites in a macrocyclic cavity, Org. Lett., 8(17), 3773 (2006).
- X. Yang, G. Wang, C. Zhong, X. Wu, and E. Fu, Novel NMR chiral solvating agents derived (1R,2R)-diaminocyclohexane: Synthesis and enantiodiscrimination for chiral carboxylic acids, Terahedron: Asymmetry, 17(6), 916 (2006).
- D. P. Curran and L. H. Kuo, Altering the stereochemistry of alkylation reactions of cyclic. Alpha. -sulfinyl radicals with diarylureas, J. Org. Chem., 59(12), 3259 (1994).
- T. R. Kelly and M. H. Kim, Relative binding affinity of carboxylate and its isosteres : Nitro, phosphate, phosphonate and sulfonate, J. Am. Chem. Soc., 116(16), 7072 (1994).
- C. R. Bondy, P. A. Gale, and S. J. Loeb, Metal-organic receptors : arranging urea hydrogen-bond donors to encapsulate sulfate ions, J. Am. Chem. Soc. 126(16), 5030 (2004).
- Y. P. Yen and K. W. Ho, Synthesis of colorimetric receptors for dicarboxylates anions : a unique color change for malonate, Tetrahedron Lett., 47(7), 1193 (2006).
- M. Hernandez-Rodriguez and E. Juaristi, Structurally simple chiral thioureas as chiral agents in the enantiodiscrimination of a-hydroxy and a-amino carboxylic acids, Tetrahedron, 63(32), 7673 (2007).
- G. U. Barretta, A. Mandoli, F. Balzano, F. Aiello, B. Nicola, and A. Grande, Monomeric and dimeric 9-O anthraquinone and phenanthryl derivatives of cinchona alkaloids as chiral solving agents for the NMR enantiodiscrimination of chiral hemiesters, Chirality, 27(10), 693 (2015).
- S. J. Connon, Organocatalysis mediated by (thio) urea derivatives, Chem. Eur. J., 12(21), 5418 (2006).
- H. S. Rho, S. H. Oh, J. W. Lee, J. Y. Lee, J. Chin, and C. E. Song, Bifunctional organocatalyst for methanolytic desymmetrization of cyclic anhydrides: increasing eantioselectivity by catalyst dilution, Chem. Commun. (10), 1208 (2008).