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For recent examples on asymmetric synthesis of trans epoxides from trans olefins, see: (a) Zhang, W.; Loebach, J. L.; Wilson, S. R.; Jacobsen, E. N. J. Am. Chem. Soc. 1990, 112, 2801. (b) Groves, J. T.; Viski, P. J. Org. Chem. 1990, 55, 3628. (c) Sakaki, H.; Irie, R.; Katsuki, T. Synlett 1993, 300. (d) Hosoya, N.; Hatayama, A.; Yanai, K.; Fujii, H.; Irie, R.; Katsuki, T. Synlett 1993, 641. (e) Collman, J. P.; Lee, V. J.; Zhang, X.; Ibers, J. A.; Brauman, J. I. J. Am. Chem. Soc. 1993, 115, 3834. (f) Collman, J. P.; Lee, V. J.; Kellen-Yuen, C. J.; Zhang, X., Ibers, J. A., Brauman, J. I. J. Am. Chem. Soc. 1995, 117, 692. For examples on asymmetric synthesis of trans epoxides from cis olefins using chiral Mn- salen catalysts, see: (g) Lee, N. H.; Jacobsen, E. N. Tetrahedron Lett. 1991, 32, 6533. (h) Chang, S.; Galvin, J. M.; Jacobsen, E. N. J. Am. Chem. Soc. 1994, 116, 6937.
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(1994)
J. Am. Chem. Soc.
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, pp. 6937
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Chang, S.1
Galvin, J.M.2
Jacobsen, E.N.3
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39
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0343597826
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For highly enantioselective epoxidation of conjugated trisubstituted olefins using chiral Mn-salen catalysts, see: (a) Brandes, B. D.; Jacobsen, E. N. J. Org. Chem. 1994, 59, 4378. (b) Palucki, M., McCormick, G. J.; Jacobsen, E. N. Tetrahedron Lett. 1995, 36, 5457. For asymmetric epoxidation of trisubstituted olefins catalyzed by enzymes, see: (c) Allain, E. J.; Hager, L. P.; Deng, L.; Jacobsen, E. N. J. Am. Chem. Soc. 1993, 115, 4415. (d) Koch, A.; Reymond, J.; Lerner, R. A. J. Am. Chem. Soc. 1994, 116, 803.
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(1994)
J. Org. Chem.
, vol.59
, pp. 4378
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Brandes, B.D.1
Jacobsen, E.N.2
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40
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85047668659
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For highly enantioselective epoxidation of conjugated trisubstituted olefins using chiral Mn-salen catalysts, see: (a) Brandes, B. D.; Jacobsen, E. N. J. Org. Chem. 1994, 59, 4378. (b) Palucki, M., McCormick, G. J.; Jacobsen, E. N. Tetrahedron Lett. 1995, 36, 5457. For asymmetric epoxidation of trisubstituted olefins catalyzed by enzymes, see: (c) Allain, E. J.; Hager, L. P.; Deng, L.; Jacobsen, E. N. J. Am. Chem. Soc. 1993, 115, 4415. (d) Koch, A.; Reymond, J.; Lerner, R. A. J. Am. Chem. Soc. 1994, 116, 803.
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(1995)
Tetrahedron Lett.
, vol.36
, pp. 5457
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Palucki, M.1
McCormick, G.J.2
Jacobsen, E.N.3
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41
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9344259269
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For highly enantioselective epoxidation of conjugated trisubstituted olefins using chiral Mn-salen catalysts, see: (a) Brandes, B. D.; Jacobsen, E. N. J. Org. Chem. 1994, 59, 4378. (b) Palucki, M., McCormick, G. J.; Jacobsen, E. N. Tetrahedron Lett. 1995, 36, 5457. For asymmetric epoxidation of trisubstituted olefins catalyzed by enzymes, see: (c) Allain, E. J.; Hager, L. P.; Deng, L.; Jacobsen, E. N. J. Am. Chem. Soc. 1993, 115, 4415. (d) Koch, A.; Reymond, J.; Lerner, R. A. J. Am. Chem. Soc. 1994, 116, 803.
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(1993)
J. Am. Chem. Soc.
, vol.115
, pp. 4415
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Allain, E.J.1
Hager, L.P.2
Deng, L.3
Jacobsen, E.N.4
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42
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0000276826
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For highly enantioselective epoxidation of conjugated trisubstituted olefins using chiral Mn-salen catalysts, see: (a) Brandes, B. D.; Jacobsen, E. N. J. Org. Chem. 1994, 59, 4378. (b) Palucki, M., McCormick, G. J.; Jacobsen, E. N. Tetrahedron Lett. 1995, 36, 5457. For asymmetric epoxidation of trisubstituted olefins catalyzed by enzymes, see: (c) Allain, E. J.; Hager, L. P.; Deng, L.; Jacobsen, E. N. J. Am. Chem. Soc. 1993, 115, 4415. (d) Koch, A.; Reymond, J.; Lerner, R. A. J. Am. Chem. Soc. 1994, 116, 803.
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(1994)
J. Am. Chem. Soc.
, vol.116
, pp. 803
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Koch, A.1
Reymond, J.2
Lerner, R.A.3
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3643096649
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Manuscript in preparation
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Yang, D.; Yip, Y.-C.; Tang, M.-W.; Wong, M-K.; Cheung, K.-K. Manuscript in preparation.
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Yang, D.1
Yip, Y.-C.2
Tang, M.-W.3
Wong, M.-K.4
Cheung, K.-K.5
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44
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0003105165
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Ketone 3 was synthesized in one step from diphenic acid and 1,3-dihydroxyacerone in 45% yield using 2-chloro-1-methylpyridinium iodide as the coupling reagent (Mukaiyama, T.; Usui, M.; Saigo, K. Chem. Lett. 1976, 49).
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(1976)
Chem. Lett.
, pp. 49
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Mukaiyama, T.1
Usui, M.2
Saigo, K.3
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45
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85088544380
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note
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3 is needed to buffer the silica gel during column chromatography (see supporting information).
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46
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3643124768
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note
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Chiral ketone 4 was synthesized in one step from chiral 1,1′-binaphthyl-2,2′-dicarboxylic acid and 1,3-dihydroxyacetone in 20-30% yield using 2-chloro-1-methylpyridinium iodide as the coupling reagent (see ref 13).
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47
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3643073757
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note
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# = 0.042 (the details of the X-ray analysis are provided as supporting information).
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48
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3643086241
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note
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Chiral ketone 4 was recovered in over 90% yield by flash column chromatography (see supporting information) and was reused without loss of chiral induction.
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50
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3643059081
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Reference 10b
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(b) Reference 10b.
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