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Volumn 9, Issue 4, 2005, Pages 472-478

The preparation of single enantiomer 2-naphthylalanine derivatives using rhodium-methyl BoPhoz-catalyzed asymmetric hydrogenation

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EID: 23044457042     PISSN: 10836160     EISSN: None     Source Type: Journal    
DOI: 10.1021/op050026g     Document Type: Article
Times cited : (41)

References (62)
  • 2
    • 0000701744 scopus 로고    scopus 로고
    • Jacobsen, E. N., Pfalz, A., Yamamoto, H., Eds.; Springer-Verlag: Berlin
    • (b) Brown, J. M. In Comprehensive Asymmetric Catalysis; Jacobsen, E. N., Pfalz, A., Yamamoto, H., Eds.; Springer-Verlag: Berlin, 1999; Vol. I, pp 121-182.
    • (1999) Comprehensive Asymmetric Catalysis , vol.1 , pp. 121-182
    • Brown, J.M.1
  • 18
    • 23044512415 scopus 로고    scopus 로고
    • U.S. Patent 5,003,011, 1991
    • (j) Coy, D. H.; Moreau, J. P. U.S. Patent 5,003,011, 1991.
    • Coy, D.H.1    Moreau, J.P.2
  • 19
    • 23044434315 scopus 로고    scopus 로고
    • Eur. Pat. Appl. EP 299402, 1989
    • (k) Schally, A. V.; Bajusz, S. Eur. Pat. Appl. EP 299402, 1989.
    • Schally, A.V.1    Bajusz, S.2
  • 22
    • 23044465102 scopus 로고    scopus 로고
    • PCT Intl. Appl. WO 9213554, 1992
    • (b) Bogden, A. E.; Moreau, J. P. PCT Intl. Appl. WO 9213554, 1992.
    • Bogden, A.E.1    Moreau, J.P.2
  • 33
    • 23044490671 scopus 로고    scopus 로고
    • PCT Int. Appl. WO 2000023598, 2000
    • (d) Taylor, S. J.; Brown, R. C. PCT Int. Appl. WO 2000023598, 2000.
    • Taylor, S.J.1    Brown, R.C.2
  • 56
    • 0002096965 scopus 로고
    • Blatt, A. H., Ed.; John Wiley: New York, Coll.
    • See, for example: Herbst, R. M.; Shemin, D. In Organic Synthesis; Blatt, A. H., Ed.; John Wiley: New York, 1943; Coll. Vol. 2; p 1.
    • (1943) Organic Synthesis , vol.2 , pp. 1
    • Herbst, R.M.1    Shemin, D.2
  • 59
    • 23044468057 scopus 로고    scopus 로고
    • note
    • The reaction time can be signficantly shortened by performing the reaction under pressure above the boiling point of the solvent (reaction times as short as 40 min have been observed using a microwave reactor at 115°C). These types of facilities were unavailable to us during scale-up.
  • 60
    • 23044505369 scopus 로고    scopus 로고
    • note
    • Methanesulfonate 8 (8.1 mg, 0.025 mmol) was slurried in 1 mL of dichloromethane, and triethylamine (11 μL, 0.079 mmol, 3.1 equiv) was added to afford a homogeneous solution. Acetic anhydride (6 mL, 0.064 mmol, 2.5 equiv) was added and the mixture was allowed to sit for 1 h. The mixture was diluted with 3 mL of ethyl acetate, then washed with 3 M HCl (1 mL) and saturated sodium bicarbonate (1 mL). The solution of 7a thus generated was dried (magnesium sulfate) and analyzed directly by either chiral GC or HPLC to determine the ee.
  • 61
    • 23044514548 scopus 로고    scopus 로고
    • note
    • 2O by comparing the integration of the product peak (one proton) at 4.37 ppm with the starting material peak (three protons) at 3.75 ppm to determine the conversion.
  • 62
    • 23044483104 scopus 로고    scopus 로고
    • note
    • 2O by comparing the integration of the product peak (one proton) at 4.25 ppm with the starting material peak (one proton) at 3.55 ppm to determine the conversion.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.