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[文献書誌] Tomioka, K,; Koga,K.et al.: "Structural Requirements of a Chiral Ligand for the Catalytic Asymmetric Addition of Thiophenol to α, -Unsaturated Esters" Tetrahedron Letters. 39. 2141-2144 (1998)
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[文献書誌] Murakata, M.; Koga, K.et al: "Stereoselective Reactions.XXX.Enantioselective Alkylation of the Lithium Enolates of Six-Membered Cyclic Ketones" Tetrahedron. 54. 2449-2458 (1998)
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[文献書誌] Shindo, M.; Koga, K.et al: "Design, Synthesis, and Application of a C_2-Symmetric Chiral Ligand for Enantioselective Conjugate Addition of Organolithium" Journal of Organic Chemistry. 63. 9351-9357 (1998)
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[文献書誌] Yamashita, Y.; Koga, K.et al: "Construction of Chiral Quaternary Carbon Centers by Asymmetric Alkylation of Achiral Lithium Enolates" Tetrahedron Letters. 40(in press). (1999)
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[文献書誌] Matsuo, J.; Koga, K.et al.: "Enantioselective Alkylation of Lactams and Lactones via Lithium Enolate Formation Using a Chiral Tetradentate lithium Amide" Tetrahedron Letters. 39. 9723-9726 (1998)