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Volumn 11, Issue 10, 2009, Pages 2057-2060

Inverse temperature dependence in the diastereoselective addition of grignard reagents to a tetrahydrofurfural

Author keywords

[No Author keywords available]

Indexed keywords

3 HYDROXYTETRAHYDROFURFURAL; 3-HYDROXYTETRAHYDROFURFURAL; DRUG DERIVATIVE; DYES, REAGENTS, INDICATORS, MARKERS AND BUFFERS; FURFURAL;

EID: 66149114385     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol900324s     Document Type: Article
Times cited : (14)

References (62)
  • 21
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    • For the optimization of diastereoselectivity through screening of organometallic reagents and additives see refs 1b, 2c, 2d, and 2e
    • For the optimization of diastereoselectivity through screening of organometallic reagents and additives see refs 1b, 2c, 2d, and 2e.
  • 22
    • 66149130019 scopus 로고    scopus 로고
    • 3 by filtration and concentration, the resulting aldehyde was used without further purification
    • The tetrahydrofurfural 1 was prepared by ozonolysis of 8 followed by reductive workup with polymer-supported triphenylphosphine PS-PPhS 3, is described in the preceding manuscript
    • 3 by filtration and concentration, the resulting aldehyde was used without further purification. A full account of the synthesis of compound 1 is described in the preceding manuscript.
    • A full account of the synthesis of compound , vol.1
  • 23
    • 66149131172 scopus 로고    scopus 로고
    • 2O.
    • 2O.
  • 24
    • 0001897420 scopus 로고    scopus 로고
    • For examples of Grignard reactions in CH2CI2, see: (a) Brown, D. S, Charreau, P, Ley, S. V. Synlett 1990, 749
    • 2, see: (a) Brown, D. S.; Charreau, P.; Ley, S. V. Synlett 1990, 749.
  • 26
    • 0026760195 scopus 로고    scopus 로고
    • In the 1H NMR spectra of 10a and 10b (CDC1 3) the protons at CIO resonate at δ 3.40 and δ 3.76 ppm, respectively. These chemical shift values are consistent with those reported for threo and erythro diastereomers of α-substituted 2-tetrahydrofuranmethanols. For the use of this mnemonic in the configurational assignment of α-substituted 2-tetrahydrofuranmethanols, see: (a) Harmange, J.-C, Figadère, B, Cavé, A. Tetrahedron Lett. 1992, 33, 5749
    • 3) the protons at CIO resonate at δ 3.40 and δ 3.76 ppm, respectively. These chemical shift values are consistent with those reported for threo and erythro diastereomers of α-substituted 2-tetrahydrofuranmethanols. For the use of this mnemonic in the configurational assignment of α-substituted 2-tetrahydrofuranmethanols, see: (a) Harmange, J.-C.; Figadère, B.; Cavé, A. Tetrahedron Lett. 1992, 33, 5749.
  • 28
    • 66149109705 scopus 로고    scopus 로고
    • 2 (10 equiv), a considerable number of byproducts were formed and the observed ratio of 10a:10b differed only slightly from those reported in entries 9-11.
    • 2 (10 equiv), a considerable number of byproducts were formed and the observed ratio of 10a:10b differed only slightly from those reported in entries 9-11.
  • 29
    • 66149128929 scopus 로고    scopus 로고
    • 1H NMR spectra, see Supporting Information.
    • 1H NMR spectra, see Supporting Information.
  • 30
    • 0038730484 scopus 로고    scopus 로고
    • For temperature and solvent effects in the diastereoselective addition of nucleophiles to carbonyl compounds, see: (a) Badorrey, R, Cativiela, C, Díaz-de-Villegas, M. D, Díez, R, Gálvez, J. A, Chem. 2003, 2268
    • For temperature and solvent effects in the diastereoselective addition of nucleophiles to carbonyl compounds, see: (a) Badorrey, R.; Cativiela, C.; Díaz-de-Villegas, M. D.; Díez, R.; Gálvez, J. A. Eur. J. Org. Chem. 2003, 2268.
  • 33
    • 66149153168 scopus 로고    scopus 로고
    • When a solution of 10a and 10b (8:1 mixture) in DCE was treated with EtMgBr and heated at reflux for 1 h, there was no change in the ratio of these substances. This result indicates that the diastereoselectivities summarized in Table lare not the result of a selective decomposition of 10b under the reaction conditions.
    • When a solution of 10a and 10b (8:1 mixture) in DCE was treated with EtMgBr and heated at reflux for 1 h, there was no change in the ratio of these substances. This result indicates that the diastereoselectivities summarized in Table lare not the result of a selective decomposition of 10b under the reaction conditions.
  • 34
    • 0028326087 scopus 로고    scopus 로고
    • For examples of inverse temperature dependence in Grignard additions to aldehdyes see ref 3a and Markó, I. E, Chesney, A, Hollinshead, D. M. Tetrahedron: Asymmetry 1994, 5, 569
    • For examples of inverse temperature dependence in Grignard additions to aldehdyes see ref 3a and Markó, I. E.; Chesney, A.; Hollinshead, D. M. Tetrahedron: Asymmetry 1994, 5, 569.
  • 35
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    • 2O.
    • 2O.
  • 36
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    • For a detailed description of chelation controlled Grignard additions, see
    • For a detailed description of chelation controlled Grignard additions, see: Eliel, E. L.; Frye, S. V.; Hortelano, E. R.; Chen, X.; Bai, X. Pure Appl. Chem. 1991, 63, 1591.
    • (1991) Pure Appl. Chem , vol.63 , pp. 1591
    • Eliel, E.L.1    Frye, S.V.2    Hortelano, E.R.3    Chen, X.4    Bai, X.5
  • 38
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    • For discussions regarding temperature-dependent effects in stereo-selective synthesis, see: a
    • For discussions regarding temperature-dependent effects in stereo-selective synthesis, see: (a) Sivaguru, J.; Solomon, M. R.; Poon, T.; Jockusch, S.; Bosio, S.; Adam, W.; Turro, N. J. Acc. Chem. Res. 2008, 41, 387.
    • (2008) Acc. Chem. Res , vol.41 , pp. 387
    • Sivaguru, J.1    Solomon, M.R.2    Poon, T.3    Jockusch, S.4    Bosio, S.5    Adam, W.6    Turro, N.J.7
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    • Chem. Int. Ed. Enel
    • (m) Göbel, T.; Sharpless, K. B. Angew. Chem. Int. Ed. Enel 1993, 32, 1329.
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    • Göbel, T.1    Sharpless, K.B.2
  • 54
    • 0011722862 scopus 로고    scopus 로고
    • For discussions regarding inverse-temperature-dependent effects and the isoinversion princple, see: a
    • For discussions regarding inverse-temperature-dependent effects and the "isoinversion princple", see: (a) Heller, D.; Buschmann, H.; Neumann, H. J. Chem. Soc. Perkin Trans 2 1999, 175.
    • (1999) J. Chem. Soc. Perkin Trans 2 , pp. 175
    • Heller, D.1    Buschmann, H.2    Neumann, H.3
  • 60
    • 66149146375 scopus 로고    scopus 로고
    • 2Mg (1 M solution in heptane) to a solution of 1 in DCE at room temperature provided (in low yield) a 1.3:1 mixture of diastereomeric alcohols favoring the 10S diastereomer, along with a number of byproducts.
    • 2Mg (1 M solution in heptane) to a solution of 1 in DCE at room temperature provided (in low yield) a 1.3:1 mixture of diastereomeric alcohols favoring the 10S diastereomer, along with a number of byproducts.
  • 61
    • 66149119494 scopus 로고    scopus 로고
    • 2O (1.8:1). In DCE, the ratio of 10R:10S diastereomers (2.3:1) was unchanged when the addition was carried out at temperatures ranging from room temperature to 83 °C.
    • 2O (1.8:1). In DCE, the ratio of 10R:10S diastereomers (2.3:1) was unchanged when the addition was carried out at temperatures ranging from room temperature to 83 °C.
  • 62
    • 66149086648 scopus 로고    scopus 로고
    • See Supporting Information for theoretical references as well as a comprehensive explanation of methods used to locate the transition states
    • See Supporting Information for theoretical references as well as a comprehensive explanation of methods used to locate the transition states.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.