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Volumn 73, Issue 10, 2008, Pages 3935-3937

Organocatalytic and enantioselective synthesis of β-(hydroxyalkyl)- γ-butyrolactones

Author keywords

[No Author keywords available]

Indexed keywords

ALDEHYDES; CATALYST ACTIVITY; ENANTIOSELECTIVITY; GAMMA RAYS; REDUCTION; SYNTHESIS (CHEMICAL);

EID: 43449097862     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo8005733     Document Type: Article
Times cited : (33)

References (65)
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    • (b) Ward, R. S. Recent Advances in the Chemistry of Lignans; Vol. 24, Part I; Att-ur-Rahman, Ed.; Elsevier: Amsterdam, 2000; pp 739-798.
  • 3
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    • Koch, S. S. C.; Chamberlin, A. R. In Studies in Natural Products Chemistry; 16; Att-ur-Rahman, Ed.; Elsevier Science: New York, 1995; pp 687-725.
    • (c) Koch, S. S. C.; Chamberlin, A. R. In Studies in Natural Products Chemistry; Vol. 16; Att-ur-Rahman, Ed.; Elsevier Science: New York, 1995; pp 687-725.
  • 17
    • 0031880360 scopus 로고    scopus 로고
    • de L Vanderlei, J. M.; Coelho, F.; Almedia, W. P. Synth. Commun. 1998, 28, 3047.
    • (c) de L Vanderlei, J. M.; Coelho, F.; Almedia, W. P. Synth. Commun. 1998, 28, 3047.
  • 32
    • 0030473746 scopus 로고    scopus 로고
    • Methyl 4-oxobutyrate: (c) Bode, J. W.; Protopopva, M. N.; Zhou, Q.-L.; Doyle, M. P. J. Org. Chem. 1996, 61, 9146-9155.
    • Methyl 4-oxobutyrate: (c) Bode, J. W.; Protopopva, M. N.; Zhou, Q.-L.; Doyle, M. P. J. Org. Chem. 1996, 61, 9146-9155.
  • 38
    • 33745715054 scopus 로고    scopus 로고
    • For recent reviews on organocatalysis, see: a
    • For recent reviews on organocatalysis, see: (a) Lelais, G.; MacMillan, D. W. C. Aldrichimica Acta 2006, 39, 79.
    • (2006) Aldrichimica Acta , vol.39 , pp. 79
    • Lelais, G.1    MacMillan, D.W.C.2
  • 39
  • 42
    • 0037043180 scopus 로고    scopus 로고
    • (e) List, B. Tetrahedron 2002, 58, 5573-5590.
    • (2002) Tetrahedron , vol.58 , pp. 5573-5590
    • List, B.1
  • 44
    • 43449127005 scopus 로고    scopus 로고
    • Selected reference on organo-catalytic aldehyde-aldehyde cross-aldol reactions: (a) Storer, R. I.; Macmillan, D. W. C. Tetrahedron 2004, 60, 7705-7714.
    • Selected reference on organo-catalytic aldehyde-aldehyde cross-aldol reactions: (a) Storer, R. I.; Macmillan, D. W. C. Tetrahedron 2004, 60, 7705-7714.
  • 51
    • 43449098249 scopus 로고    scopus 로고
    • Selected reference on organo-catalytic ketone-aldehyde cross-aldol reactions: (a) Sakthivel, K.; Notz, W.; Bui, T.; Barbas, C. F., III J. Am. Chem. Soc. 2003, 123, 5260-5267.
    • Selected reference on organo-catalytic ketone-aldehyde cross-aldol reactions: (a) Sakthivel, K.; Notz, W.; Bui, T.; Barbas, C. F., III J. Am. Chem. Soc. 2003, 123, 5260-5267.
  • 60
    • 43449125386 scopus 로고    scopus 로고
    • In addition to the general procedure, the reaction was carried out under different conditions, e.g., (a) to a suspension of L-proline in dry DMF at 4°C, a solution of aldehydes 2 (1.0 equiv) and n-hexanal 3k (1.0 equiv) was added over 22 h, (b) by changing the mole proportions such as using 2 (2.0 equiv) and 3k (1.0 equiv), and (c) a solution of 2 (2.0 equiv), 3k (1.0 equiv), and proline (0.2 equiv) in dry DMF was stirred at 4°C for overnight. All of the attempts led to an inseparable mixture of products.
    • In addition to the general procedure, the reaction was carried out under different conditions, e.g., (a) to a suspension of L-proline in dry DMF at 4°C, a solution of aldehydes 2 (1.0 equiv) and n-hexanal 3k (1.0 equiv) was added over 22 h, (b) by changing the mole proportions such as using 2 (2.0 equiv) and 3k (1.0 equiv), and (c) a solution of 2 (2.0 equiv), 3k (1.0 equiv), and proline (0.2 equiv) in dry DMF was stirred at 4°C for overnight. All of the attempts led to an inseparable mixture of products.
  • 65
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    • Crystal data for 1c: C11H11NO5, MW, 237.21, T, 293(2) K, Monoclinic, P21, a, 6.0650(10) Å, b, 5.9654(9) Å, c, 14.695(2) Å, β, 91.142(5)°. V, 531.55(15) Å3. Z, 2, ρcalcd, 1.482 Mg/m3, μ, 0.119 mm-1, γ, 0.71073 Å, 2θmax, 56.64, reflection collected/unique, 7909/2797, Rint, 0.0264, R1, 0.0444, wR2, 0.1020 for 2150 reflections [I > 2σ (I, Flack(x) parameter, 0.010
    • int = 0.0264, R1 = 0.0444, wR2 = 0.1020 for 2150 reflections [I > 2σ (I)], Flack(x) parameter = 0.0(10).


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