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jsessionid=83620916389281BC90917E4078C16B7D.f04t03">H. Li, Y. Wang, L. Tang, F. Wu, X. Liu, C. Guo, B. M. Foxman, L. Deng, Angew. Chem. Int. Ed. 2005, 44, 105. 4) Asymmetric construction of quaternary stereocenters by direct organocatalytic amination of α-substituted α-cyanoacetates and β-dicarbonyl compounds S. Saaby, M. Bella, K. A. Jørgensen, J. Am. Chem. Soc. 2004, 126, 8120. 5) Intramolecular, nucleophile-catalyzed aldol-lactonization (NCAL) reactions: Catalytic, asymmetric synthesis of bicyclic β-lactones G. S. Cortez, R. L. Tennyson, D. Romo, J. Am. Chem. Soc. 2001, 123, 7945. 6) Organocatalyzed formal [2+2] cycloaddition of ketimines with allenoates: Facile access to azetidines with a chiral tetrasubstituted carbon stereogenic center S. Takizawa, F. A. Arteaga, Y. Yoshida, M. Suzuki, H. Sasai, Org. Lett. 2013, 15, 4142. 7) α-Isocupreine, an enantiocomplementary catalyst of β-isocupreidine a) Y. Nakamoto, F. Urabe, K. Takahashi, J. Ishihara, S. Hatakeyama, Chem. Eur. J. 2013, 19, 12653. b) S. Hatakeyama, J. Ishihara, K. Takahashi, Y. Nakamoto, Nagasaki University, Jpn. Kokai Tokkyo Koho 2013 227272, 2013.