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Volumn 8, Issue 15, 2006, Pages 3175-3178

Design of Brønsted acid-assisted chiral Brønsted acid catalyst bearing a bis(triflyl)methyl group for a Mannich-type reaction

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EID: 33746894125     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol060939a     Document Type: Article
Times cited : (129)

References (53)
  • 9
    • 2342521907 scopus 로고    scopus 로고
    • Asymmetric catalysis of chiral monophosphoric acids has been explained through two hydrogen bondings or tight ion pairs on a case-by-case basis (see also ref 4a,c): (a) Uraguchi, D.; Terada, M. J. Am. Chem. Soc. 2004, 126, 5356.
    • (2004) J. Am. Chem. Soc. , vol.126 , pp. 5356
    • Uraguchi, D.1    Terada, M.2
  • 19
    • 33746897576 scopus 로고    scopus 로고
    • note
    • 4 N-2-hydroxyphenylaldimine might play a role as a stoichiometric achiral proton source as well as our present catalytic system.
  • 20
    • 0000158777 scopus 로고
    • The concept of a chiral BBA originates in that of a Lewis acid-assisted chiral Brønsted acid (chiral LBA). For LBA, see: (a) Ishihara, K.; Kaneeda, M.; Yamamoto, H. J. Am. Chem. Soc. 1994, 116, 11179.
    • (1994) J. Am. Chem. Soc. , vol.116 , pp. 11179
    • Ishihara, K.1    Kaneeda, M.2    Yamamoto, H.3
  • 35
    • 33746925853 scopus 로고    scopus 로고
    • note
    • triflyl = trifluoromethanesulfonyl; triflate = trifluoromethanesulfonate.
  • 53
    • 33746873146 scopus 로고    scopus 로고
    • note
    • According to the X-ray diffractional analysis, any intramolecular hydrogen bondings were existed in the solid state of (R)-1 (H5A⋯O2 = 2.305 Å; H21A⋯O5 = 3.267 Å). However, the possibilty of 13 or 14 is not denied by this result.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.