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Volumn 119, Issue 36, 1997, Pages 8451-8458

Palladium-catalyzed coupling of optically active amines with aryl bromides

Author keywords

[No Author keywords available]

Indexed keywords

AMINE; DIPEPTIDYL CARBOXYPEPTIDASE INHIBITOR;

EID: 0030760535     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja971583o     Document Type: Article
Times cited : (237)

References (39)
  • 17
    • 0029874188 scopus 로고    scopus 로고
    • For previous exmaples of palladium-catalyzed intramolecular aryl aminations and aryl amidations, see: Wolfe, J. P.; Rennels, R. A.; Buchwald, S. L. Tetrahedron 1996, 52, 7525-7546.
    • (1996) Tetrahedron , vol.52 , pp. 7525-7546
    • Wolfe, J.P.1    Rennels, R.A.2    Buchwald, S.L.3
  • 21
    • 1842278559 scopus 로고    scopus 로고
    • note
    • The use of less expensive bis(phosphine) ligands, such as 1,2-bis-(diphenylphosphino)ethane, l,3-bis(diphenylphosphino)propane, and 1,2-bis(diphenylphosphino)benzene, also prevents racemization in these reactions. However, the yields of coupled products are significantly lower due to poor conversion and an increase of side products which arise from β-hydride elimination from Pd(II)-amido complexes. See ref 7.
  • 22
    • 0000653605 scopus 로고    scopus 로고
    • Overman has recently used our methodology to aid in the determination of the absolute configuration of an amino alcohol derivative. See: Calter, M.; Hollis, T. K.; Overman, L. E.; Ziller, J.; Zipp, G. G. J. Org. Chem. 1997, 62, 1449-1456.
    • (1997) J. Org. Chem. , vol.62 , pp. 1449-1456
    • Calter, M.1    Hollis, T.K.2    Overman, L.E.3    Ziller, J.4    Zipp, G.G.5
  • 23
    • 1842360335 scopus 로고    scopus 로고
    • note
    • The addition of imine inhibits the coupling reaction; therefore, only 10 mol % imine was used.
  • 32
    • 0001687271 scopus 로고
    • It is believed that Π-coordination in metal-imine complexes is required for insertion reactions to occur. See: Fryzuk, M. D.; Piers, W. E. Organomet. 1990, 9, 986-998.
    • (1990) Organomet. , vol.9 , pp. 986-998
    • Fryzuk, M.D.1    Piers, W.E.2
  • 34
    • 1842344699 scopus 로고    scopus 로고
    • note
    • For example, when 2-phenylpyrrolidine and 4-bromobiphenyl were coupled using 2 mol % Pd2(DBA)3, 4 mol % (±)-BINAP, and 1.4 equiv of NaOt-Bu in toluene at 70 °C, a mixture of 46% 2-phenyl-1-pyrroline, 36% biphenyl, and 18% N-(p-biphenyl)-2-phenylpyrrolidine was obtained as determined by GC analysis. The percentages were corrected for the response factors of each component of the mixture.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.