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Volumn 121, Issue 24, 1999, Pages 5807-5808

First iminodiazaphospholidines with a stereogenic phosphorus center. Application to asymmetric copper-catalyzed cyclopropanation

Author keywords

[No Author keywords available]

Indexed keywords

COPPER; CYCLOPROPANE DERIVATIVE; PHOSPHORANE DERIVATIVE;

EID: 0033597638     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja984295g     Document Type: Article
Times cited : (57)

References (45)
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    • (1981) Tetrahedron , vol.37 , pp. 437
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    • For recent applications, see: (a) Molina, P.; Aller, E.; Lorenzo, A. Synthesis 1998, 283. (b) Okawa, T.; Kawase, M.; Eguchi, S. Synthesis 1998, 1185. (c) Takahashi, M.; Suga, D. Synthesis 1998, 986.
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    • Molina, P.1    Aller, E.2    Lorenzo, A.3
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    • For recent applications, see: (a) Molina, P.; Aller, E.; Lorenzo, A. Synthesis 1998, 283. (b) Okawa, T.; Kawase, M.; Eguchi, S. Synthesis 1998, 1185. (c) Takahashi, M.; Suga, D. Synthesis 1998, 986.
    • (1998) Synthesis , pp. 1185
    • Okawa, T.1    Kawase, M.2    Eguchi, S.3
  • 8
    • 0031852467 scopus 로고    scopus 로고
    • For recent applications, see: (a) Molina, P.; Aller, E.; Lorenzo, A. Synthesis 1998, 283. (b) Okawa, T.; Kawase, M.; Eguchi, S. Synthesis 1998, 1185. (c) Takahashi, M.; Suga, D. Synthesis 1998, 986.
    • (1998) Synthesis , pp. 986
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    • note
    • 4 at a bridgehead position between the two five-membered rings.
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    • 15N-labeled azide that the a-nitrogen of the original azide is the one present in the imine product, the β- and γ-nitrogen atoms being evolved as molecular nitrogen.
    • (1968) Angew. Chem. , vol.7 , pp. 636
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    • Berry, R. S. J. Chem. Phys. 1960, 32, 933. Nevertheless, in any case Turnstile rotation must be taken into consideration as a mechanistic alternative: (a) Gillepsie, P.; Hoffmann, P.; Klusacek, H.; Marquading, D.; Pfohl, S.; Ramirez, F.; Tsolis, E. A.; Ugi, I. Angew. Chem., Int. Ed. Engl. 1971, 83, 691. (b) Ramirez, F. Bull. Soc. Chim. Fr. 1970, 3491.
    • (1960) J. Chem. Phys. , vol.32 , pp. 933
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    • 0011599056 scopus 로고
    • Berry, R. S. J. Chem. Phys. 1960, 32, 933. Nevertheless, in any case Turnstile rotation must be taken into consideration as a mechanistic alternative: (a) Gillepsie, P.; Hoffmann, P.; Klusacek, H.; Marquading, D.; Pfohl, S.; Ramirez, F.; Tsolis, E. A.; Ugi, I. Angew. Chem., Int. Ed. Engl. 1971, 83, 691. (b) Ramirez, F. Bull. Soc. Chim. Fr. 1970, 3491.
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    • note
    • 18
  • 35
    • 0344758166 scopus 로고    scopus 로고
    • For recent reviews dealing with copper cyclopropanation reaction, see: (a) Singh, V. K.; DattaGupta, A.; Sekar, G. Synthesis 1997, 137. (b) Doyle, M. P.; Protopopova, M. N. Tetrahedron 1998, 54, 7919. (c) Doyle, M. P.; Forbes, D. C. Chem. Rev. 1998, 98, 911.
    • (1997) , pp. 137
    • Singh, V.K.1    DattaGupta, A.2    Synthesis, S.G.3
  • 36
    • 0032500082 scopus 로고    scopus 로고
    • For recent reviews dealing with copper cyclopropanation reaction, see: (a) Singh, V. K.; DattaGupta, A.; Sekar, G. Synthesis 1997, 137. (b) Doyle, M. P.; Protopopova, M. N. Tetrahedron 1998, 54, 7919. (c) Doyle, M. P.; Forbes, D. C. Chem. Rev. 1998, 98, 911.
    • (1998) Tetrahedron , vol.54 , pp. 7919
    • Doyle, M.P.1    Protopopova, M.N.2
  • 37
    • 0000100584 scopus 로고    scopus 로고
    • For recent reviews dealing with copper cyclopropanation reaction, see: (a) Singh, V. K.; DattaGupta, A.; Sekar, G. Synthesis 1997, 137. (b) Doyle, M. P.; Protopopova, M. N. Tetrahedron 1998, 54, 7919. (c) Doyle, M. P.; Forbes, D. C. Chem. Rev. 1998, 98, 911.
    • (1998) Chem. Rev. , vol.98 , pp. 911
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    • note
    • Copper(II) triflate complexes do not catalyze the reaction unless they are heated to 65 °C. Other Cu(I) and Cu(II) salts (for example, halide, cyanide, acetate, and perchlorate) show little or no catalytic activity, and the observed enantioselectivity is markedly inferior to that obtained for the triflate-ligand complexes.
  • 45
    • 0345188476 scopus 로고    scopus 로고
    • note
    • It is interesting to note that compounds 3, 6a, and 6b do not function as imido donor groups for the aziridination of styrene catalyzed by CuOTf. On the other hand, the corresponding ligands 2, 5a, 5b do not lead to the formation with high level of enantioselectivity to the cyclopropane adducts 10 and 11 (enantioselectivity up to 7% ee).


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