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Diagram presented
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(c) Adam, W.; Beck, A. K.; Pichota, A.; Saha-Möller, C. R.; Seebach, D.; Vogl, N.; Zhang, R. Tetrahedron: Asymmetry 2003, 14, 1355. (Diagram presented)
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Enantiomeric excess values were determined by chiral GC analysis, and the detailed information is provided in Supporting Information. The absolute configurations of 4a and 4b were determined as (R) and (R), respectively, by comparison of retention times (GC analysis) of the absolute configuration known compounds (9a, 9b), which were prepared by the following reported sequence: Ehrlich, G.; Kalesse, M. Synlett 2005, 4, 655. Detailed information is provided in Supporting information.
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(a) Enantiomeric excess values were determined by chiral GC analysis, and the detailed information is provided in Supporting Information. The absolute configurations of 4a and 4b were determined as (R) and (R), respectively, by comparison of retention times (GC analysis) of the absolute configuration known compounds (9a, 9b), which were prepared by the following reported sequence: Ehrlich, G.; Kalesse, M. Synlett 2005, 4, 655. Detailed information is provided in Supporting information.
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For the stereoselective epoxidation of homoallylic alcohols, see
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(b) For the stereoselective epoxidation of homoallylic alcohols, see: Mihelich, E. D.; Daniels, K.; Eickhoff, D. J. J. Am. Chem. Soc. 1981, 103, 7690.
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Mihelich, E.D.1
Daniels, K.2
Eickhoff, D.J.3
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To explain these enantioselectivities, as well as those of kinetic resolutions, we proposed a possible model of the asymmetric epoxidation of homoallylic alcohol catalyzed by the complex of vanadium and ligand 1d, which is provided in the Supporting Information.
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To explain these enantioselectivities, as well as those of kinetic resolutions, we proposed a possible model of the asymmetric epoxidation of homoallylic alcohol catalyzed by the complex of vanadium and ligand 1d, which is provided in the Supporting Information.
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