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Volumn 77, Issue 1, 2012, Pages 640-647

Mechanism of the acid-promoted intramolecular Schmidt reaction: Theoretical assessment of the importance of lone pair-cation, Cationπ, and steric effects in controlling regioselectivity

Author keywords

[No Author keywords available]

Indexed keywords

ALKYL GROUPS; ANTIPERIPLANAR; AZIDOHYDRIN; LEAVING GROUPS; REGIOCONTROL; STERIC EFFECT;

EID: 84855560621     PISSN: 00223263     EISSN: 15206904     Source Type: Journal    
DOI: 10.1021/jo202338m     Document Type: Article
Times cited : (38)

References (52)
  • 9
    • 33744981391 scopus 로고    scopus 로고
    • (in this report, an intramolecular Schmidt reaction of a β-azidoalkylketone, rather than α-azidoalkylketone, was utilized)
    • Tani, K.; Stoltz, B. M. Nature 2006, 441, 731-734 (in this report, an intramolecular Schmidt reaction of a β-azidoalkylketone, rather than α-azidoalkylketone, was utilized)
    • (2006) Nature , vol.441 , pp. 731-734
    • Tani, K.1    Stoltz, B.M.2
  • 14
  • 21
    • 77952819729 scopus 로고    scopus 로고
    • Revision A.02; Gaussian, Inc. Wallingford CT, Full citation in Supporting Information.
    • Frish, M. J.; GAUSSIAN09, Revision A.02; Gaussian, Inc.: Wallingford CT, 2009. Full citation in Supporting Information.
    • (2009) GAUSSIAN09
    • Frish, M.J.1
  • 26
    • 1942521097 scopus 로고    scopus 로고
    • For a representative paper in which NBO was used to analyze noncovalent interactions in Se•••O systems, see
    • For a representative paper in which NBO was used to analyze noncovalent interactions in Se•••O systems, see: Iwaoka, M; Komatsu, H.; Katsuda, T.; Tomoda, S. J. Am. Chem. Soc. 2004, 126, 5309-5317
    • (2004) J. Am. Chem. Soc. , vol.126 , pp. 5309-5317
    • Iwaoka, M.1    Komatsu, H.2    Katsuda, T.3    Tomoda, S.4
  • 36
    • 0000263238 scopus 로고
    • In; de Mayo, P. John Wiley & Sons: New York, Vol
    • Smith, P. A. S. In Molecular Rearrangements; de Mayo, P., Ed.; John Wiley & Sons: New York, 1963; Vol 1, pp 457-591.
    • (1963) Molecular Rearrangements , vol.1 , pp. 457-591
    • Smith, P.A.S.1
  • 40
    • 84855540906 scopus 로고
    • Kow, G. R. Tetrahedron 1981, 37, 1283-1307
    • (1981) Tetrahedron , vol.37 , pp. 1283-1307
    • Kow, G.R.1
  • 46
    • 84855537934 scopus 로고    scopus 로고
    • Calculations with two water molecules (one hydrogen bonded to the OH and the other to the ether/thioether) led to similar predicted relative energies. The energy difference between 5a-TS and 5d-TS was predicted to be 1.3 kcal/mol (versus 0.8 kcal/mol with one water molecule), favoring the fused product, and the energy difference between 4a-TS and 4d-TS was predicted to be 0.4 kcal/mol (versus 0.6 kcal/mol with one water molecule), favoring the bridged product.
    • Calculations with two water molecules (one hydrogen bonded to the OH and the other to the ether/thioether) led to similar predicted relative energies. The energy difference between 5a-TS and 5d-TS was predicted to be 1.3 kcal/mol (versus 0.8 kcal/mol with one water molecule), favoring the fused product, and the energy difference between 4a-TS and 4d-TS was predicted to be 0.4 kcal/mol (versus 0.6 kcal/mol with one water molecule), favoring the bridged product.
  • 47
    • 84855556114 scopus 로고    scopus 로고
    • Aside from the calculations described above that made use of explicit water and dichloromethane molecules, no other treatment of explicit reactant-Lewis base interactions was attempted.
    • Aside from the calculations described above that made use of explicit water and dichloromethane molecules, no other treatment of explicit reactant-Lewis base interactions was attempted.
  • 48
    • 84855562781 scopus 로고    scopus 로고
    • See also ref 5 for a related discussion on the effects of excess Lewis acids.
    • See also ref 5 for a related discussion on the effects of excess Lewis acids.
  • 49
    • 0014458941 scopus 로고
    • Sulfur lone pairs are expected to be better donors than oxygen lone pairs; see
    • Sulfur lone pairs are expected to be better donors than oxygen lone pairs; see: Kimura, J. E.; Szent-Györgyi, A. Proc. Natl. Acad. Sci. U. S. A. 1969, 62, 286-288
    • (1969) Proc. Natl. Acad. Sci. U. S. A. , vol.62 , pp. 286-288
    • Kimura, J.E.1    Szent-Györgyi, A.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.