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For comprehensive discussions of the various aspects of the aldol condensation see: (a) Meckleburger, H. B.; Wilcox, C. S. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 2, pp 99-131.
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(b) Heathcock, C. H. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 2, pp 133-179.
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(c) Heathcock, C. H. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 2, pp 181-238.
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(d) Kim, B. M.; Williams, S. F.; Masamune, S. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 2, pp 239-275.
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Kim, B.M.1
Williams, S.F.2
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An excellent summary of pertinent literature and definitive physical organic studies of the aldol reaction can be found in: Arnett, E. M.; Fisher, F. J.; Nichols, M. A.; Ribiero, A. A. J. Am. Chem. Soc. 1990, 112, 801.
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(a) See, for example: Evans, D. A.; Bartroli, J.; Shih, T. L. J. Am. Chem Soc. 1981, 103, 2127.
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(b) For a review of double diastereoselection in organic synthesis, see: Masamune, S. Ang. Chem., Int. Ed. Engl. 1985, 24, 1.
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House, H. O.; Crumrine, D. S.; Teranishi, A. Y.; Olmstead, H. D. J. Am. Chem. Soc. 1985, 95, 3310 and references therein.
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(a) Heathcock, C. H.; Buse, C. T.; Kleschick, W. A.; Pirrung, M. C.; Sohn, J. E.; Lampe, J. J. Org. Chem. 1980, 45, 1066.
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(a) Rickborn, B. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 3, pp 721-732
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(b) Rickborn, B. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 3, pp 733-775.
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(c) Coveney, D. J. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 3, pp 777-801.
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0000648050
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An acyclic version of the epoxy alcohol rearrangement described above, and thus another solution to the acyclic aldol problem, has been described: (a) Maruoka, K.; Hasegawa, M.; Yamamoto, H.; Suzuki, K.; Shimazaki, M.; Tsuchihashi, G. J. Am. Chem. Soc. 1986, 108, 3827.
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(b) Suzuki, K.; Miyazawa, M.; Tsuchihashi, G. Tetrahedron Lett. 1987, 28, 3515.
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(a) Havesi, L.; Nagy, J. B.; Krief, A.; Derouane, E. G. Org. Magn. Res. 1977, 10, 14.
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2, and TMSOTf, although the diastereomeric ratios with these promoters were generally lower
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2, and TMSOTf, although the diastereomeric ratios with these promoters were generally lower.
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39
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1H NMR spectroscopy. In the latter analyses, the quartet for the proton on the hydroxyl-bearing carbon was diagnostic, occurring between 0.1 and 0.2 ppm downfield in the syn isomers as compared to the anti isomers (e.g., δ 4.08 and δ 3.98 for 7syn and 7anti, respectively)
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1H NMR spectroscopy. In the latter analyses, the quartet for the proton on the hydroxyl-bearing carbon was diagnostic, occurring between 0.1 and 0.2 ppm downfield in the syn isomers as compared to the anti isomers (e.g., δ 4.08 and δ 3.98 for 7syn and 7anti, respectively).
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0011949922
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For a discussion of intramolecular nitrile oxide/alkene cycloaddition (INOC) reactions, see: Wade, P. A. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 4, pp 1124-1134.
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Comprehensive Organic Synthesis
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Wade, P.A.1
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Hudlicky, T.; Sinai-Zingde, G.; Natchus, M. G. Tetrahedron Lett. 1987, 28, 5287.
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Hudlicky, T.1
Sinai-Zingde, G.2
Natchus, M.G.3
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44
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0000937935
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The phenyl-substituted allylic alcohol precursors to epoxides 14 were prepared by lithiation of (Z)-1-bromo-1-phenylpropene followed by addition to cyclopentanone. At -78°C the Z/E ratio of the stereoisomeric products was ∼4/1; at -22°C the ratio was ∼1/4
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The phenyl-substituted allylic alcohol precursors to epoxides 14 were prepared by lithiation of (Z)-1-bromo-1-phenylpropene followed by addition to cyclopentanone. At -78°C the Z/E ratio of the stereoisomeric products was ∼4/1; at -22°C the ratio was ∼1/4. Krop, P. J.; Crawford, S. D. J. Org. Chem. 1994, 59, 3102.
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Krop, P.J.1
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45
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85037512076
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13C NMR analysis and IR where appropriate. Suitably purified samples also exhibited consistent combustion analyses and/or high-resolution mass spectral data
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13C NMR analysis and IR where appropriate. Suitably purified samples also exhibited consistent combustion analyses and/or high-resolution mass spectral data.
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