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Volumn , Issue 9, 2007, Pages 1315-1324

2-(trimethylsilyl)ethyl sulfoxides as a convenient source of sulfenate anions

Author keywords

Alkylation; Fluorine; Silicon; Sulfenate salts; Sulfoxides

Indexed keywords

ALKYL HALIDES; SULFENATE SALTS; SULFOXIDES;

EID: 34249017980     PISSN: 00397881     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-966017     Document Type: Article
Times cited : (37)

References (73)
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    • Benzenesulfenic acid 2-(trimethylsilyl)ethyl ester was prepared by reaction of benzenesulfenyl chloride with 2-(trimethylsilyl)ethyl alcohol. By comparison, the analogous sulfoxides are readily available from commercial compounds according to: (a) Schwan, A. L.; Pippert, M. F. Tetrahedron: Asymmetry 1995, 6, 131.
    • Benzenesulfenic acid 2-(trimethylsilyl)ethyl ester was prepared by reaction of benzenesulfenyl chloride with 2-(trimethylsilyl)ethyl alcohol. By comparison, the analogous sulfoxides are readily available from commercial compounds according to: (a) Schwan, A. L.; Pippert, M. F. Tetrahedron: Asymmetry 1995, 6, 131.
  • 19
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    • The reactivity of more sophisticated β-silyl sulfoxides with TBAF has previously been investigated by the group of Toru, but their attention was focused on the alkene product: (a) Nakamura, S, Watanabe, Y, Toru, T. J. Chem. Soc, Perkin Trans. 1 1999, 3403
    • The reactivity of more sophisticated β-silyl sulfoxides with TBAF has previously been investigated by the group of Toru, but their attention was focused on the alkene product: (a) Nakamura, S.; Watanabe, Y.; Toru, T. J. Chem. Soc., Perkin Trans. 1 1999, 3403.
  • 24
    • 0035034827 scopus 로고    scopus 로고
    • Schwan also described a fluoride free deprotection of simple 2-(trimethylsilyl)ethyl sulfoxides by treatment with thionyl chloride to afford sulfinyl chlorides: (f) Schwan, A. L.; Strickler, R. R.; Dunn-Dufault, R.; Brillon, D. Eur. J. Org. Chem. 2001, 1643.
    • Schwan also described a fluoride free deprotection of simple 2-(trimethylsilyl)ethyl sulfoxides by treatment with thionyl chloride to afford sulfinyl chlorides: (f) Schwan, A. L.; Strickler, R. R.; Dunn-Dufault, R.; Brillon, D. Eur. J. Org. Chem. 2001, 1643.
  • 31
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    • For a review concerning the 2-(trimethylsilyl)ethyl group in synthesis, see: a
    • For a review concerning the 2-(trimethylsilyl)ethyl group in synthesis, see: (a) Chambert, S.; Désiré, J.; Décout, J.-L. Synthesis 2002, 2319.
    • (2002) Synthesis , pp. 2319
    • Chambert, S.1    Désiré, J.2    Décout, J.-L.3
  • 39
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    • For deprotection of selenothioic acid S-esters: (i) Murai, T.; Kamoto, T.; Kato, S. J. Am. Chem. Soc. 2000, 122, 9850.
    • For deprotection of selenothioic acid S-esters: (i) Murai, T.; Kamoto, T.; Kato, S. J. Am. Chem. Soc. 2000, 122, 9850.
  • 42
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    • For deprotection of phosphinoselenothioic acid S-esters: (l) Kimura, T.; Murai, T. Chem. Commun. 2005, 4077.
    • For deprotection of phosphinoselenothioic acid S-esters: (l) Kimura, T.; Murai, T. Chem. Commun. 2005, 4077.
  • 51
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    • 3N.
    • 3N.
  • 52
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    • -1, see for example: Fortis, F.; Barbe, B.; Pétraud, M.; Picard, J.-P. Chem. Commun. 1999, 527.
    • -1, see for example: Fortis, F.; Barbe, B.; Pétraud, M.; Picard, J.-P. Chem. Commun. 1999, 527.
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    • 8.
    • 8.
  • 54
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    • Crystal structure determination of 1b: Single crystals of sulfoxide 1b suitable for X-ray crystallographic analysis were obtained by slow diffusion of pentane in CH2Cl2 soln. X-ray diffraction experiments for monocrystal of 1b were performed at 150 K with graphite-monochromatized MoKα radiation on a Bruker-Nonius Kappa CCD area detector diffractometer. Formula C11H 17BrOSSi, Mr 305.31, crystal system triclinic, space group P1, a, 6.5653 (3) Å, b, 10.1206 (4) Å, c, 11.8654 (5) Å, α, 66.082.(2)°, β, 78.256 (3)°, γ, 80.455 (3)°, V, 702.54 (5) Å3, Z, 2, density calcd, 1.443 g/cm3, μ, 3.135 cm-1, R, 0.0386, wR, 0.0997. Selected bond lengths (Å) and angles(deg, Br1-C1 1.8912 (14, S1-O1 1.4930 (13, S1-C4 1.7924 1
    • -1, R = 0.0386, wR = 0.0997. Selected bond lengths (Å) and angles(deg): Br1-C1 1.8912 (14), S1-O1 1.4930 (13), S1-C4 1.7924 (13), S1-C7 1.8248 (14), Si1-C8 1.8792 (14), Si1-C9 1.8512 (18), Si1-C10 1.862 (2), Si1-C11 1.862 (2), C7-C8 1.512 (2), O1-S1-C4 106.27 (7), O1-S1-C7 106.60 (7), C4-S1-C7 97.78 (6), C11-Si1-C8 106.90 (8), C9-Si1-C8 109.56 (9), C10-Si1-C8 110.30 (10). Program(s)used to solve structure: SHELXS97. Program(s)used to refine structure: SHELXL97. Software used to prepare material for publication: SHELXL97. Crystallographic data for compound lb have been deposited at the Cambridge Crystallographic Data Centre, CCDC No 629340. Copies of this information may be obtained free of charge from The Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK; +44 (1223)336408; E-mail: deposit@ccdc.cam.ac.uk or http://www.ccdc.cam.ac.uk.
  • 55
    • 0010891930 scopus 로고    scopus 로고
    • An intramolecular coordination between the oxygen atom of the sulfoxide group and the silicon center was previously detected at low temperature with the analogous electron deficient trifluorosilyl derivatives: Pestunovich, V. A, Larin, M. F, Sorokin, M. S, Albanov, A. I, Voronkov, M. G. J. Organomet. Chem. 1985, 280, C17
    • An intramolecular coordination between the oxygen atom of the sulfoxide group and the silicon center was previously detected at low temperature with the analogous electron deficient trifluorosilyl derivatives: Pestunovich, V. A.; Larin, M. F.; Sorokin, M. S.; Albanov, A. I.; Voronkov, M. G. J. Organomet. Chem. 1985, 280, C17.
  • 56
    • 0342305079 scopus 로고    scopus 로고
    • Similar structural effects involving the 2-(trimethylsilyl)ethyl system have already been mentioned with carboxylate and sulfenate esters: Green, A. J.; Issa, W.; White, J. M. Aust. J. Chem. 1997, 50, 927.
    • Similar structural effects involving the 2-(trimethylsilyl)ethyl system have already been mentioned with carboxylate and sulfenate esters: Green, A. J.; Issa, W.; White, J. M. Aust. J. Chem. 1997, 50, 927.
  • 60
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    • Spectral data are in agreement with those previously reported by us. 6a
    • 6a
  • 64
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    • The reaction was carried out with a mixture of both Z- and E-isomers but also the geometrically pure substrates.
    • The reaction was carried out with a mixture of both Z- and E-isomers but also the geometrically pure substrates.
  • 65
    • 0000160514 scopus 로고    scopus 로고
    • A similar reluctance towards fluoridolysis was also observed with the analogous isopropyl derivative and also in the sulfide series: (a) Anderson, M. B, Ranasinghe, M. G, Palmer, J. T, Fuchs, P. L. J. Org. Chem. 1988, 53, 3125
    • A similar reluctance towards fluoridolysis was also observed with the analogous isopropyl derivative and also in the sulfide series: (a) Anderson, M. B.; Ranasinghe, M. G.; Palmer, J. T.; Fuchs, P. L. J. Org. Chem. 1988, 53, 3125.


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