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Volumn 118, Issue 48, 1996, Pages 12232-12233

1-Manxyl: A persistent tertiary alkyl radical that disproportionates via ε-hydrogen abstraction

Author keywords

[No Author keywords available]

Indexed keywords

POLYCYCLIC HYDROCARBON;

EID: 0030443644     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja961136t     Document Type: Article
Times cited : (2)

References (39)
  • 2
    • 0025220050 scopus 로고
    • and references therein
    • For a review on intrabridgehead chemistry, see: Alder, R. W. Tetrahedron 1990, 46, 683 and references therein.
    • (1990) Tetrahedron , vol.46 , pp. 683
    • Alder, R.W.1
  • 7
    • 33646951487 scopus 로고
    • Ph.D. Thesis, ETH, Zürich
    • (b) Müller, E. Ph.D. Thesis, ETH, Zürich, 1982.
    • (1982)
    • Müller, E.1
  • 22
    • 84951251000 scopus 로고
    • Krusic, P. J.; Kochi, J. K. J. Am. Chem. Soc. 1968, 90, 7155. In a typical experiment a solution of 5 mg of manxane and 30 μL of di-tert-butyl peroxide in 260 μL of solvent was prepared in a quartz EPR tube, degassed by 3 freeze-pump-thaw cycles, and photolyzed directly in the cavity of a Varian E4 spectrometer with the unfiltered light of a 500 W high-pressure mercury lamp.
    • (1968) J. Am. Chem. Soc. , vol.90 , pp. 7155
    • Krusic, P.J.1    Kochi, J.K.2
  • 23
    • 33646955945 scopus 로고    scopus 로고
    • note
    • +, 31), 124 (27), 109 (47), 96 (100), 81 (91), 67 (85), 55 (60).
  • 24
    • 37049115520 scopus 로고
    • H = 1.8 G (2H). The 1.8 G meta-H hyperfine and the absence of β-hydrogen splittings indicate exclusive addition at the oxygen atom of TBN by an unreactive tertiary radical such as 1, consistent with the observed multiminute trapping time. Terabe, S.; Konaka, R. J. Chem. Soc., Perkin Trans. 2 1973, 369.
    • (1973) J. Chem. Soc., Perkin Trans. 2 , pp. 369
    • Terabe, S.1    Konaka, R.2
  • 25
    • 37049089042 scopus 로고
    • A recent model relating activation energies to reaction expthermicities suggests that for tert-butoxyl abstracting H from alkanes barrier heights change by roughly 30-40% of reaction energy differences. Roberts, B. P.; Steel, A. J. J. Chem. Soc., Perkin Trans. 2 1994, 2155.
    • (1994) J. Chem. Soc., Perkin Trans. 2 , pp. 2155
    • Roberts, B.P.1    Steel, A.J.2
  • 26
    • 33947290546 scopus 로고
    • The EPR simulation program used in this work was written at Michigan State University by Andrew S. Ichimura for use with the nonlinear least squares fitting program KINFIT (Dye, J. L.; Nicely, V. A. J. Chem. Educ. 1971, 48, 443).
    • (1971) J. Chem. Educ. , vol.48 , pp. 443
    • Dye, J.L.1    Nicely, V.A.2
  • 27
    • 37049097354 scopus 로고
    • Preliminary analysis of the experimental EPR spectrum was also performed using the program MATCH (Jackson, R. A. J. Chem. Soc., Perkin Trans. 2 1983, 523).
    • (1983) J. Chem. Soc., Perkin Trans. 2 , pp. 523
    • Jackson, R.A.1
  • 34
    • 33646965193 scopus 로고    scopus 로고
    • note
    • β bonds, which should make hyperconjugation less effective.
  • 38
    • 0000732245 scopus 로고
    • This process is reminiscent of the case of halobicyclo[1.1.1]pent-1-yl radicals, where evidence was found for a new γ-disproportionation process in which the γ-fluorine (or chlorine) atom was transferred from the 3-fluoro (or 3-chloro) radical to a triethylsilyl or to a second bicyclo[1.1.1]pent-1-yl radical to yield, in both cases, [1.1.1]propellane. Adcock, W.; Binmore, G. T.; Krstic, A. R.; Walton, J. C.; Wilkie, J. J. Am. Chem. Soc. 1995, 117, 2758.
    • (1995) J. Am. Chem. Soc. , vol.117 , pp. 2758
    • Adcock, W.1    Binmore, G.T.2    Krstic, A.R.3    Walton, J.C.4    Wilkie, J.5
  • 39
    • 33645170959 scopus 로고
    • Our thanks go to Professor Roger Alder, who kindly provided us with [3.3.3]propellanedione, converted to [3.3.3]propellane by Kishner-Wolff reduction according to the literature procedure. Weber, R. W.; Cook, J. M. Can. J. Chem. 1978, 56, 189.
    • (1978) Can. J. Chem. , vol.56 , pp. 189
    • Weber, R.W.1    Cook, J.M.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.