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Volumn 58, Issue 3, 1993, Pages 718-731

A Tellurium Transposition Route to Allylic Alcohols: Overcoming Some Limitations of the Sharpless-Katsuki Asymmetric Epoxidation

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EID: 0001211286     PISSN: 00223263     EISSN: 15206904     Source Type: Journal    
DOI: 10.1021/jo00055a029     Document Type: Article
Times cited : (52)

References (261)
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    • Trost, B. M., Ed.; Pergamon: Oxford, Chapter 3.2. We thank Professor Sharpless for providing us with a copy in advance of publication
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    • We are indebted to Dr. Douglas A. Livingstone for suggesting this terminology. Some other examples of nucleophilic reductions involving Te
    • We are indebted to Dr. Douglas A. Livingstone for suggesting this terminology. Some other examples of nucleophilic reductions involving Te: Yamashita, M.; Kato, Y.; Suemitsu, R. Chem. Lett. 1980, 847–848.
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    • For a list of both types of isomerization, see, VCH: New York
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    • Larock, R.C.1
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    • 1H NMR spectrum at consistently higher field than that of the erythro isomers. This may be the result of the formation of a more stable intramolecular hydrogen bond between the hydroxyl group and the epoxide oxygen in the threo isomer because of less steric congestion as indicated by models. Conversion of the threo and erythro glycidols to their tosylates reverses the shielding of the methine proton; this proton in the erythro isomer now resonates at higher field than that in the threo isomer. This may be due to a smaller dipole moment of the erythro tosylate expected from consideration of the lowest energy rotamer. [For a discussion of the rotamer energies of glycidols, see
    • 1H NMR spectrum at consistently higher field than that of the erythro isomers. This may be the result of the formation of a more stable intramolecular hydrogen bond between the hydroxyl group and the epoxide oxygen in the threo isomer because of less steric congestion as indicated by models. Conversion of the threo and erythro glycidols to their tosylates reverses the shielding of the methine proton; this proton in the erythro isomer now resonates at higher field than that in the threo isomer. This may be due to a smaller dipole moment of the erythro tosylate expected from consideration of the lowest energy rotamer. [For a discussion of the rotamer energies of glycidols, see: Roush, W. R.; Brown, R. J.; DiMare, M. J. Org. Chem. 1983, 48, 5083–6093.]
    • (1983) J. Org. Chem. , vol.48 , pp. 5083-6093
    • Roush, W.R.1    Brown, R.J.2    DiMare, M.3
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    • Some of these rearrangements are summarized in a useful compendium, VCH: New York
    • Some of these rearrangements are summarized in a useful compendium: Larock, R. C. Comprehensive Organic Transformations; VCH: New York, 1989; pp 114–119, 191, 480, 581.
    • (1989) Comprehensive Organic Transformations
    • Larock, R.C.1
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    • For reviews on Te chemistry, see the following
    • For reviews on Te chemistry, see the following: Engman, L. Acc. Chem. Res. 1985, 18, 274–279.
    • (1985) Acc. Chem. Res. , vol.18 , pp. 274-279
    • Engman, L.1


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