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1
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0001649254
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Ed. by D. N. Jones, Pergamon Press
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[1] For reviews, see for example a) C. R. Johnson, Comprehensive Organic Chemistry, Ed. by D. N. Jones, Vol. 3. Pergamon Press, 1979, Part 11.11 (p. 223);
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(1979)
Comprehensive Organic Chemistry
, vol.3
, Issue.PART 11.11
, pp. 223
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Johnson, C.R.1
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3
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0013491581
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Ed. by S. Oae, Kagakudojin, Tokyo, Chapter 7
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c) M. Kise, Yuki-iou Kagaku (Gosei-hanno Hen), Ed. by S. Oae, Kagakudojin, Tokyo, 1982, Chapter 7.
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(1982)
Yuki-iou Kagaku (Gosei-hanno Hen)
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Kise, M.1
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4
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37049083391
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[2] O. Meth-Cohn and G. Van Vuuren, J. Chem. Soc., Perkin Trans, 1, 1986, 233.
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(1986)
J. Chem. Soc., Perkin Trans, 1
, pp. 233
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Meth-Cohn, O.1
Van Vuuren, G.2
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6
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0031536794
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[4] J. Nakayama, T. Yu, Y. Sugihara, and A. Ishii, Chem. Lett., 1997, 499.
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(1997)
Chem. Lett.
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Nakayama, J.1
Yu, T.2
Sugihara, Y.3
Ishii, A.4
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7
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0002920442
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[5] N. Furukawa, S. Zhang, S. Sato, and M. Higaki, Heterocyctes, 1997, 44, 61.
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(1997)
Heterocycles
, vol.44
, pp. 61
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Furukawa, N.1
Zhang, S.2
Sato, S.3
Higaki, M.4
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10
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33751499952
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b) D. A. Evans, M. M. Faul, and M. T. Bilodeau, J. Org. Chem., 1991, 56, 6744.
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(1991)
J. Org. Chem.
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, pp. 6744
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Evans, D.A.1
Faul, M.M.2
Bilodeau, M.T.3
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11
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0013521705
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All new compounds gave satisfactory elemental analysis results
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[8] All new compounds gave satisfactory elemental analysis results.
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12
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0013491582
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note
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3) δ 27.7, 29.6, 33.1, 35.1, 120.1, 122.8, 152.7, 156.0.
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14
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0000675026
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b) C. R. Johnson, R. A, Kirchhoff, R. J. Reischer, and G. F. Katekar, J. Am. Chem. Soc., 1973, 95, 4287.
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(1973)
J. Am. Chem. Soc.
, vol.95
, pp. 4287
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Johnson, C.R.1
Kirchhoff, R.A.2
Reischer, R.J.3
Katekar, G.F.4
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15
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0000370490
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[11] a) D. J. Cram, J. Day, D. R. Rayner, D. M. Von Schriltz, D. J. Duchamp, and D. C. Garwood, J. Am. Chem. Soc., 1970, 92, 7369;
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(1970)
J. Am. Chem. Soc.
, vol.92
, pp. 7369
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Cram, D.J.1
Day, J.2
Rayner, D.R.3
Von Schriltz, D.M.4
Duchamp, D.J.5
Garwood, D.C.6
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16
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0000015451
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b) T. Yoshimura, T. Omata, N. Furukawa, and S. Oae, J. Org. Chem., 1976, 41, 1728.
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(1976)
J. Org. Chem.
, vol.41
, pp. 1728
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Yoshimura, T.1
Omata, T.2
Furukawa, N.3
Oae, S.4
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17
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0013530676
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CHIRALPAK AD (4.6 mm i.d. x 250 mm; Daicel Chemical Industries, Ltd) was used with hexane/ethanol (98.5/1.5) as the eluent (flow rate: 1.0 ml/min, detector: UV, 254 nm)
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[12] Chiralpak Ad (4.6 mm i.d. x 250 mm; Daicel Chemical Industries, Ltd) was used with hexane/ethanol (98.5/1.5) as the eluent (flow rate: 1.0 ml/min, detector: UV, 254 nm).
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18
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0013555614
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[13] The sulfur atom of the sulfoxide 4 is also chiral. However, the pyramidal inversion energy of thiophene 1-oxides is not sufficiently large that optical resolution of a pair of enantiomers at room temperature must be impossible: calculated and experimental pyramidal inversion energies are 13.3 and 14.8 kcal/mol for 2,5-dimethylthiophene and 2,5-di-tert-octylthiophene 1-oxides, respectively; a) J. D. Andose, A. Rauk, R. Tang, and K. Mislow, Int. J. Sulfur Chem., 1971, A1, 66;
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(1971)
Int. J. Sulfur Chem.
, vol.A1
, pp. 66
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Andose, J.D.1
Rauk, A.2
Tang, R.3
Mislow, K.4
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19
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0000216705
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Indeed, attempted isolation of a pair of enantiomers of 4 by HPLC on a chiral column failed
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b) W. L. Mock, J. Am. Chem. Soc., 1970, 92, 7610. Indeed, attempted isolation of a pair of enantiomers of 4 by HPLC on a chiral column failed.
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(1970)
J. Am. Chem. Soc.
, vol.92
, pp. 7610
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Mock, W.L.1
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21
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0013549034
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note
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16
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25
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4244184441
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c) M. S. E. A. E. Faghi, P. Geneste, J. L. Olivé, A. Dubourg, J. Rambaud, and J.-P. Declercq, Acta Cryst., 1987, C43, 2421;
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(1987)
Acta Cryst.
, vol.C43
, pp. 2421
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Faghi, M.S.E.A.E.1
Geneste, P.2
Olivé, J.L.3
Dubourg, A.4
Rambaud, J.5
Declercq, J.-P.6
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26
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0000611861
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d) M. S. E. A. E. Faghi, P. Geneste, J. L. Olivé, J. Rambaud, and J.-P. Declercq, Acta Cryst., 1988, C44, 498;
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(1988)
Acta Cryst.
, vol.C44
, pp. 498
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Faghi, M.S.E.A.E.1
Geneste, P.2
Olivé, J.L.3
Rambaud, J.4
Declercq, J.-P.5
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27
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84977291953
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e) G. Douglas, C. S. Frampton, and K. W. Muir, Acta Cryst., 1993, C49, 1197. For a congested thiophene 1,1-dioxide, A. W. Krebs, E. Franken, M. Müller, H. Colberg, W. Cholcha, J.Wilken, J. Ohrenberg, R. Albrecht, and E. Weiss, Tetrahedron Lett., 1992, 33, 5947.
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(1993)
Acta Cryst.
, vol.C49
, pp. 1197
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Douglas, G.1
Frampton, C.S.2
Muir, K.W.3
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28
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0026495524
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e) G. Douglas, C. S. Frampton, and K. W. Muir, Acta Cryst., 1993, C49, 1197. For a congested thiophene 1,1-dioxide, A. W. Krebs, E. Franken, M. Müller, H. Colberg, W. Cholcha, J. Wilken, J. Ohrenberg, R. Albrecht, and E. Weiss, Tetrahedron Lett., 1992, 33, 5947.
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(1992)
Tetrahedron Lett.
, vol.33
, pp. 5947
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Krebs, A.W.1
Franken, E.2
Müller, M.3
Colberg, H.4
Cholcha, W.5
Wilken, J.6
Ohrenberg, J.7
Albrecht, R.8
Weiss, E.9
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29
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0013529949
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We thank Dr. T. Fujihara for his help in determination of the CD spectra
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[18] We thank Dr. T. Fujihara for his help in determination of the CD spectra.
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