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Volumn 352, Issue 6, 2010, Pages 976-980

Highly efficient asymmetric three-component vinylogous mannich reaction catalyzed by a chiral Scandium(III)N,N'-dioxide complex

Author keywords

Asymmetric catalysis; Multicomponent reaction; Scandium; Silyl dienolates; Vinylogous mannich reaction

Indexed keywords


EID: 77951149887     PISSN: 16154150     EISSN: 16154169     Source Type: Journal    
DOI: 10.1002/adsc.200900877     Document Type: Article
Times cited : (34)

References (33)
  • 1
    • 0035897085 scopus 로고    scopus 로고
    • For reviews on the synthetic applications of vinylogous Mannich reaction, see: a) S. K. Bur, S. F Martin, Tetrahedron 2001, 57, 3221;
    • (2001) Tetrahedron , vol.57 , pp. 3221
    • Bur, S.K.1    Martin, S.F.2
  • 6
    • 0033579639 scopus 로고    scopus 로고
    • For catalytic AVM reactions of cyclic siloxyfurans, see: a) S. F. Martin, O. D. Lopez, Tetrahedron Lett. 1999, 40, 8949;
    • (1999) Tetrahedron Lett , vol.40 , pp. 8949
    • Martin, S.F.1    Lopez, O.D.2
  • 25
    • 0000082453 scopus 로고
    • For selected examples of asymmetric reactions catalyzed by chiral scandium complexes based on other chiral ligands, see: a) S. Kobayashi, M. Araki, I. Hachiya, J. Org. Chem. 1994, 59, 3758;
    • (1994) J. Org. Chem. , vol.59 , pp. 3758
    • Kobayashi, S.1    Araki, M.2    Hachiya, I.3
  • 29
    • 0142106406 scopus 로고    scopus 로고
    • For some selected reports in which the chiral scandium complexes chelated with bidentate substrates, see: a) D. Yang, M. Yang, N. Y. Zhu, Org. Lett. 2003, 5, 3749;
    • (2003) Org. Lett. , vol.5 , pp. 3749
    • Yang, D.1    Yang, M.2    Zhu, N.Y.3
  • 33
    • 77951188148 scopus 로고    scopus 로고
    • note
    • Aliphatic aldehydes were also investigated. The reaction of cyclohexanecarbaldehyde sluggishly proceeded to give the corresponding products with 23% ee in 25% yield. Isobutyraldehyde and pivalaldehyde only provided the racemic products in 21% and 56% yields, respectively. The distinct performance of the aromatic and aliphatic aldimines suggested that a JT-JT interaction might exist between the aromatic aldimine and the aromatic ring of the catalyst, which played a crucial role in the asymmetric inducing of the reaction. [10] A scaled-up reaction of benzaldehyde was also performed which is thirty-fold larger (3 mmol) than the model reaction (0.1 mmol) and the vinylogous Mannich product 4a was produced with 80% ee and in 96% yield.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.