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Volumn 69, Issue 15, 2004, Pages 4984-4990

Virtually complete control of simple and face diastereoselectivity in the Michael addition reactions between achiral equivalents of a nucleophilic glycine and (S)- or (R)-3-(E-enoyl)-4-phenyl-1,3-oxazolidin-2-ones: Practical method for preparation of β-substituted pyroglutamic acids and prolines

Author keywords

[No Author keywords available]

Indexed keywords

ADDITION REACTIONS; CHEMICAL BONDS; COMPLEXATION; ORGANOMETALLICS; STEREOCHEMISTRY;

EID: 3543014960     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo0495438     Document Type: Article
Times cited : (81)

References (69)
  • 12
    • 0003416748 scopus 로고
    • Baldwin, J. E., Ed.; Organic Chemistry Series; Pergamon Press: Oxford, UK
    • For general reviews on asymmetric synthesis of α-amino acids via homologation of chiral equivalents of electrophilic or nucleophilic glycine see: (a) Williams, R. M. In Synthesis of Optically Active α-Amino Acids; Baldwin, J. E., Ed.; Organic Chemistry Series; Pergamon Press: Oxford, UK, 1989.
    • (1989) Synthesis of Optically Active α-Amino Acids
    • Williams, R.M.1
  • 16
    • 0033043246 scopus 로고    scopus 로고
    • For selected recent reviews, see: (e) Calmes, M.; Daunis, J. Amino Acids 1999, 16, 215-250.
    • (1999) Amino Acids , vol.16 , pp. 215-250
    • Calmes, M.1    Daunis, J.2
  • 27
    • 0038795772 scopus 로고    scopus 로고
    • For the recent collection of leading papers on asymmetric synthesis of amino acids, see: Asymmetric Synthesis of Novel Sterically Constrained Amino Acids, Tetrahedron Symposia-in-Print, No. 88: Hruby, V. J., Soloshonok, V. A., Guest Eds. Tetrahedron 2001, 57, No. 30.
    • (2001) Tetrahedron , vol.57 , Issue.30
    • Hruby, V.J.1    Soloshonok, V.A.2
  • 43
    • 3543034537 scopus 로고    scopus 로고
    • note
    • A conception of the "Atom Economy" introduced by Professor Barry M. Trost has found quick and unanimous understanding, support, and appreciation in the chemistry community as a philosophical guideline for the development of organic synthesis in the 21st century. On the other hand, in the current literature one can notice another trend developing as a paradigm for the synthetic methodology of the future, which is simplicity of experimental conditions, or as we prefer to call it, operationally convenient reaction conditions.
  • 61
    • 3543046063 scopus 로고    scopus 로고
    • note
    • Due to the minute integral intensity of some peaks found in the NMR spectra of the crude reaction mixtures it was impossible to conclude whether they belong to another diastereoisomer or to byproducts.
  • 62
    • 3543023817 scopus 로고    scopus 로고
    • note
    • The (2R,3S) absolute stereochemistry for the isopropyl and aromatic derivatives is a consequence of the Cahn-Ingold-Prelog priorities (see ref 16) and is stereochemically equivalent to the (2R,3R) absolute configuration in the aliphatic series of compounds.
  • 64
    • 3543028541 scopus 로고    scopus 로고
    • note
    • While in the case of bis-methyl-containing 6f derivative the presence of the α-substituent might create unfavorable steric interactions and decrease electrophilicity of the C,C double bond, the high C-H acidity of the benzylic methylene group in 6e might be the cause of the unsuccessful results.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.