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Volumn 121, Issue 6, 1999, Pages 1417-1418

Enantiocontrol in tandem carbonyl ylide formation and intermolecular 1,3-dipolar cycloaddition of α-diazo ketones mediated by chiral dirhodium(II) carboxylate catalyst [20]

Author keywords

[No Author keywords available]

Indexed keywords

CARBONYL DERIVATIVE; CARBOXYLIC ACID DERIVATIVE; COPPER; KETONE; LIGAND; RHODIUM DERIVATIVE;

EID: 0033576992     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja983748e     Document Type: Letter
Times cited : (216)

References (36)
  • 15
    • 0031963326 scopus 로고    scopus 로고
    • (e) Clark, J. S.; Fretwell, M.; Whitlock, G. A.; Burns, C. J.; Fox, D. N. A. Tetrahedron Lett. 1998, 39, 97. The asymmetric induction observed here has been attributed to the creation of chiral, nonracemic free ylides after dissociation of the catalyst rather than involvement of the catalyst in the product-forming step.
    • (1998) Tetrahedron Lett. , vol.39 , pp. 97
    • Clark, J.S.1    Fretwell, M.2    Whitlock, G.A.3    Burns, C.J.4    Fox, D.N.A.5
  • 16
    • 33845376176 scopus 로고
    • Following the early suggestion by Roskamp and Johnson, Doyle and co-workers have recently demonstrated that a metal-associated ylide is the primary product-forming intermediate in enantioselective intermolecular ylide generation/[2,3]-sigmatropic rearrangement with allyl iodide whose free ylide is achiral: (a) Roskamp, E. J.; Johnson, C. R. J. Am. Chem. Soc. 1986, 108, 6062.
    • (1986) J. Am. Chem. Soc. , vol.108 , pp. 6062
    • Roskamp, E.J.1    Johnson, C.R.2
  • 23
    • 0032516374 scopus 로고    scopus 로고
    • 4 afforded 1,3-dipolar cycloadduct in high exo-selectivity, albeit in low enantioselectivities (endo: 20% ee: exo: 5% ee): Suga, H.; Ishida, H.; Ibata, T. Tetrahedron Lett. 1998, 39, 3165.
    • (1998) Tetrahedron Lett. , vol.39 , pp. 3165
    • Suga, H.1    Ishida, H.2    Ibata, T.3
  • 24
    • 0344069330 scopus 로고    scopus 로고
    • note
    • 4, to form the all-cis 1,3-dioxolane as the major product in 28% ee. See ref 3d.
  • 25
    • 33748236032 scopus 로고
    • Enantioselective aziridine formation with benzylideneaniline and ethyl diazoacetate catalyzed by Cu(I)L* has been reported, where a free ylide intermediate is improbable: Hansen, K. B.; Finney, N. S.; Jacobsen, E. N. Angew. Chem., Int. Ed. Engl. 1995, 34, 676.
    • (1995) Angew. Chem., Int. Ed. Engl. , vol.34 , pp. 676
    • Hansen, K.B.1    Finney, N.S.2    Jacobsen, E.N.3
  • 29
    • 0344069326 scopus 로고    scopus 로고
    • note
    • Substantial amounts (ca. 10-15%) of the cycloheptatriene derivatives were formed by way of the bimolecular addition of the rhodium(II) carbene carbon onto the benzene ring.
  • 33
    • 0344069327 scopus 로고    scopus 로고
    • note
    • 4 were 6% and 2%, respectively.
  • 35
    • 0345362831 scopus 로고    scopus 로고
    • note
    • The syntheses of the new catalysts are described in the Supporting Information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.