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Volumn 280, Issue 1-2, 2008, Pages 148-155

Novel rhodium catalyst for asymmetric hydroformylation of styrene: Study of electronic and steric effects of phosphorus seven-membered ring ligands

Author keywords

Asymmetric hydroformylation; Monodentate phosphines; Rhodium

Indexed keywords

COMPLEXATION; HYDROFORMYLATION; LIGANDS; PHOSPHORUS; RHODIUM;

EID: 38349057536     PISSN: 13811169     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.molcata.2007.10.023     Document Type: Article
Times cited : (29)

References (54)
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    • Nozaki K., Jacobsen E.N., Pfaltz A., and Yamamoto H. (Eds), Springer, Heidelberg
    • In: Nozaki K., Jacobsen E.N., Pfaltz A., and Yamamoto H. (Eds). Comprehensive Asymmetric Catalysis (1999), Springer, Heidelberg 381-413
    • (1999) Comprehensive Asymmetric Catalysis , pp. 381-413
  • 6
    • 34748864260 scopus 로고    scopus 로고
    • Beller M., and Bolm C. (Eds), Wiley-VCH Verlag, Weinheim
    • Beller M., and Kumar K. In: Beller M., and Bolm C. (Eds). Transition Metals for Organic Synthesis vol. I (2004), Wiley-VCH Verlag, Weinheim 29-55
    • (2004) Transition Metals for Organic Synthesis , vol.I , pp. 29-55
    • Beller, M.1    Kumar, K.2
  • 8
    • 38349033755 scopus 로고    scopus 로고
    • J.E. Babin, G.T. Whiteker, WO 9303839, 1993.
  • 28
    • 27644448390 scopus 로고    scopus 로고
    • First synthesis of this ligand was reported by:
    • First synthesis of this ligand was reported by:. Kasák P., Mereiter K., and Widhalm M. Tetrahedron: Asymmetry 16 (2005) 3416-3426
    • (2005) Tetrahedron: Asymmetry , vol.16 , pp. 3416-3426
    • Kasák, P.1    Mereiter, K.2    Widhalm, M.3
  • 32
    • 38349027501 scopus 로고    scopus 로고
    • note
    • 4 and 2.1 mol% 4j the α-amino acid derivatives were hydrogenated in excellent yields (methyl 2-acetamidocinnamate: 98%; methyl 2-acetamidoacrylate: >99%) and good enantioselectivities (methyl 2-acetyl phenylalanine: 87% ee; methyl 2-acetyl alanine: 71% ee) [reaction time: 24 h; hydrogen pressure: 1.3 bar; 25 °C; solvent: toluene]. Furthermore, the same catalyst was active in the hydrogenation of β-amino acid precursors. Here, (Z)-methyl 3-acetamidobut-2-enoate was hydrogenated with good enantioselectivity (64% ee (S), conversion: 53%; reaction time: 24 h; hydrogen pressure: 50 bar; 10 °C; 24 h; solvent: ethanol), while the hydrogenation of the corresponding E-isomer was poorly enantioselective (4% ee (S), conversion: 82%; reaction time: 24 h; hydrogen pressure: 2.5 bar; 10 °C; 24 h; solvent: 2-propanol).
  • 41
    • 38349042639 scopus 로고    scopus 로고
    • ® A: for selective catalytic applications see:


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.