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Volumn 2, Issue 9, 2000, Pages 1193-1196

A solution to the cyclic aldol problem

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EID: 0001122974     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol005525a     Document Type: Article
Times cited : (21)

References (45)
  • 1
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    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • 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.
    • (1991) Comprehensive Organic Synthesis , vol.2 , pp. 99-131
    • Meckleburger, H.B.1    Wilcox, C.S.2
  • 2
    • 0000851696 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • (b) Heathcock, C. H. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 2, pp 133-179.
    • (1991) Comprehensive Organic Synthesis , vol.2 , pp. 133-179
    • Heathcock, C.H.1
  • 3
    • 0000487061 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • (c) Heathcock, C. H. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 2, pp 181-238.
    • (1991) Comprehensive Organic Synthesis , vol.2 , pp. 181-238
    • Heathcock, C.H.1
  • 4
    • 0001091186 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • (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.
    • (1991) Comprehensive Organic Synthesis , vol.2 , pp. 239-275
    • Kim, B.M.1    Williams, S.F.2    Masamune, S.3
  • 14
    • 0021775497 scopus 로고
    • (b) For a review of double diastereoselection in organic synthesis, see: Masamune, S. Ang. Chem., Int. Ed. Engl. 1985, 24, 1.
    • (1985) Ang. Chem., Int. Ed. Engl. , vol.24 , pp. 1
    • Masamune, S.1
  • 26
    • 0000382638 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • (a) Rickborn, B. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 3, pp 721-732
    • (1991) Comprehensive Organic Synthesis , vol.3 , pp. 721-732
    • Rickborn, B.1
  • 27
    • 0001312924 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • (b) Rickborn, B. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 3, pp 733-775.
    • (1991) Comprehensive Organic Synthesis , vol.3 , pp. 733-775
    • Rickborn, B.1
  • 28
    • 0001726756 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • (c) Coveney, D. J. In Comprehensive Organic Synthesis; Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY, 1991; Vol. 3, pp 777-801.
    • (1991) Comprehensive Organic Synthesis , vol.3 , pp. 777-801
    • Coveney, D.J.1
  • 38
    • 85037499326 scopus 로고    scopus 로고
    • 2, and TMSOTf, although the diastereomeric ratios with these promoters were generally lower
    • 2, and TMSOTf, although the diastereomeric ratios with these promoters were generally lower.
  • 39
    • 85037492921 scopus 로고    scopus 로고
    • 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)
    • 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).
  • 41
    • 0011949922 scopus 로고
    • Trost B. M., Fleming, I., Eds.; Pergamon Press: Elmsford, NY
    • 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.
    • (1991) Comprehensive Organic Synthesis , vol.4 , pp. 1124-1134
    • Wade, P.A.1
  • 44
    • 0000937935 scopus 로고
    • 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
    • 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.
    • (1994) J. Org. Chem. , vol.59 , pp. 3102
    • Krop, P.J.1    Crawford, S.D.2
  • 45
    • 85037512076 scopus 로고    scopus 로고
    • 13C NMR analysis and IR where appropriate. Suitably purified samples also exhibited consistent combustion analyses and/or high-resolution mass spectral data
    • 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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