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Volumn 12, Issue 7, 2010, Pages 1484-1487

Catalytic asymmetric conjugate addition of α-cyanoketones for the construction of a quaternary stereogenic center

Author keywords

[No Author keywords available]

Indexed keywords

KETONE;

EID: 77950233676     PISSN: 15237060     EISSN: 15237052     Source Type: Journal    
DOI: 10.1021/ol100183s     Document Type: Article
Times cited : (40)

References (69)
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    • For general reviews for catalytic asymmetric conjugate addition, see: (a)
    • For general reviews for catalytic asymmetric conjugate addition, see: (a) Krause, N.; Hoffmann-Röder, A. Synthesis 2001, 171.
    • (2001) Synthesis , pp. 171
    • Krause, N.1    Hoffmann-Röder, A.2
  • 8
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    • Pfaltz, A., Yamamoto, H., Eds.; Springer: Heidelberg, Germany
    • (d) Yamaguchi, M. In Comprehensive Asymmetric Catalysis; Jacobsen, E. N., Pfaltz, A., Yamamoto, H., Eds.; Springer: Heidelberg, Germany, 2003; Suppl. 1, p 151.
    • (2003) Comprehensive Asymmetric Catalysis , Issue.SUPPL. 1 , pp. 151
    • Yamaguchi, M.1    Jacobsen, E.N.2
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    • For selected examples of catalytic asymmetric conjugate addition of α-substituted β-ketoesters for the construction of quaternary stereogenic centers, see: (a)
    • For selected examples of catalytic asymmetric conjugate addition of α-substituted β-ketoesters for the construction of quaternary stereogenic centers, see: (a) Wynberg, H.; Helder, R. Tetrahedron Lett. 1975, 16, 4057.
    • (1975) Tetrahedron Lett. , vol.16 , pp. 4057
    • Wynberg, H.1    Helder, R.2
  • 22
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    • For selected examples of catalytic asymmetric conjugate addition of α-substituted α-cyanocarbonyl pronucleophiles for the construction of quaternary stereogenic centers, see: (a)
    • For selected examples of catalytic asymmetric conjugate addition of α-substituted α-cyanocarbonyl pronucleophiles for the construction of quaternary stereogenic centers, see: (a) Sawamura, M.; Hamashima, H.; Ito, Y. J. Am. Chem. Soc. 1992, 114, 8295.
    • (1992) J. Am. Chem. Soc. , vol.114 , pp. 8295
    • Sawamura, M.1    Hamashima, H.2    Ito, Y.3
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    • For reviews on α-cyanocarboanions, see: (a)
    • For reviews on α-cyanocarboanions, see: (a) Arseniyadis, S.; Kyler, K. S.; Watt, D. S. Org. React. 1984, 31, 1.
    • (1984) Org. React. , vol.31 , pp. 1
    • Arseniyadis, S.1    Kyler, K.S.2    Watt, D.S.3
  • 42
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    • For the utility of RE/1 catalysts and their related catalysts, see: (a)
    • For the utility of RE/1 catalysts and their related catalysts, see: (a) Nitabaru, T.; Kumagai, N.; Shibasaki, M. Tetrahedron Lett. 2008, 49, 272.
    • (2008) Tetrahedron Lett. , vol.49 , pp. 272
    • Nitabaru, T.1    Kumagai, N.2    Shibasaki, M.3
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    • 0001391883 scopus 로고
    • For selected examples of small peptide-based asymmetric catalysis, see: (a)
    • For selected examples of small peptide-based asymmetric catalysis, see: (a) Oku, J.; Inoue, S. Makromol. Chem. 1979, 180, 1089.
    • (1979) Makromol. Chem. , vol.180 , pp. 1089
    • Oku, J.1    Inoue, S.2
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    • Ligand 1 was prepared from L-Val following the procedure described in the literature.
    • Ligand 1 was prepared from L-Val following the procedure described in the literature. Mashiko, T.; Hara, K.; Tanaka, D.; Fujiwara, Y.; Kumagai, N.; Shibasaki, M. J. Am. Chem. Soc. 2007, 129, 11342.
    • (2007) J. Am. Chem. Soc. , vol.129 , pp. 11342
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    • More clear tendency between ionic radii of REs and stereoselectivity is observed for more structurally rigid catalysts: (a)
    • More clear tendency between ionic radii of REs and stereoselectivity is observed for more structurally rigid catalysts: (a) Sasai, H.; Suzuki, T.; Itoh, N.; Arai, S.; Shibasaki, M. Tetrahedron Lett. 1993, 34, 2567.
    • (1993) Tetrahedron Lett. , vol.34 , pp. 2567
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    • 3/1 1:1 gave the product in 91% yield and 24% ee under otherwise identical conditions.
    • 3/1 ) 1:1 gave the product in 91% yield and 24% ee under otherwise identical conditions.
  • 61
    • 77950213407 scopus 로고    scopus 로고
    • The absolute configuration of 4aa and 4ac was determined by X-ray crystallographic analysis. See Supporting Information for details.
    • The absolute configuration of 4aa and 4ac was determined by X-ray crystallographic analysis. See Supporting Information for details.
  • 62
    • 77950216376 scopus 로고    scopus 로고
    • The reaction using an acyclic α-cyanoketone or a β-substituted enone gave no desired products. Experimental details are summarized in Supporting Information.
    • The reaction using an acyclic α-cyanoketone or a β-substituted enone gave no desired products. Experimental details are summarized in Supporting Information.
  • 63
    • 77950275720 scopus 로고    scopus 로고
    • The reaction with enone 3n using another RE/1 catalyst did not improve the enantioselectivity. The results are summarized in Supporting Information.
    • The reaction with enone 3n using another RE/1 catalyst did not improve the enantioselectivity. The results are summarized in Supporting Information.
  • 69
    • 77950257398 scopus 로고    scopus 로고
    • Relative configuration was determined after converting to the corresponding cyclic carbonate. See Supporting Information for details.
    • Relative configuration was determined after converting to the corresponding cyclic carbonate. See Supporting Information for details.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.