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Volumn 69, Issue 7, 2004, Pages 2532-2543

2-Piperidino-1,1,2-triphenylethanol: A Highly Effective Catalyst for the Enantioselective Arylation of Aldehydes

Author keywords

[No Author keywords available]

Indexed keywords

CATALYSTS; FOURIER TRANSFORM INFRARED SPECTROSCOPY;

EID: 1842503817     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo035824o     Document Type: Article
Times cited : (143)

References (77)
  • 7
    • 0032554843 scopus 로고    scopus 로고
    • For leading references on aryl transfer to ketones see: (b) Ramón, D. J.; Yus, M. Tetrahedron 1998, 54, 5651-5666.
    • (1998) Tetrahedron , vol.54 , pp. 5651-5666
    • Ramón, D.J.1    Yus, M.2
  • 11
    • 4244117250 scopus 로고
    • For general reviews on enantioselective addition of organozincs to aldehydes see: (f) Soai, K.; Niwa, S. Chem. Rev. 1992, 92, 833-856.
    • (1992) Chem. Rev. , vol.92 , pp. 833-856
    • Soai, K.1    Niwa, S.2
  • 31
    • 1842580373 scopus 로고    scopus 로고
    • note
    • 2-Piperidino-1,1,2-triphenylethanol (5) is commercially available in both enantiomeric forms.
  • 43
    • 0041806596 scopus 로고    scopus 로고
    • During the preparation of this manuscript a theoretical DFT study on the arylation of ethanal using a simplified achiral ligand system was published, see: Rudolph, J.; Rasmussen, T.; Bolm, C.; Norrby, P. O. Angew. Chem., Int. Ed. 2003, 42, 3002-3005.
    • (2003) Angew. Chem., Int. Ed. , vol.42 , pp. 3002-3005
    • Rudolph, J.1    Rasmussen, T.2    Bolm, C.3    Norrby, P.O.4
  • 48
    • 1842423261 scopus 로고    scopus 로고
    • note
    • 2Zn (0.16 M).
  • 49
    • 1842423262 scopus 로고    scopus 로고
    • note
    • Concentration of ethylphenylzinc was estimated to be 0.32 M, based on the assumption that the equilibrium is completely shifted toward the formation of the mixed zinc species.
  • 52
    • 1842423258 scopus 로고    scopus 로고
    • note
    • 2Zn (0.27 M).
  • 55
    • 0037076939 scopus 로고    scopus 로고
    • Addition of Grignard and alkyllithium reagents to aldehydes should provide lower activation parameters than their corresponding ketone analogues due to reduced steric hindrance. For secondary deuterium kinetic isotope effects in the irreversible additions of allyl reagents to benzaldehyde see: (a) Gajewski, J. J.; Bocian, W.; Brichford, N. L.; Henderson, J. L. J. Org. Chem. 2002, 67, 4236-4240.
    • (2002) J. Org. Chem. , vol.67 , pp. 4236-4240
    • Gajewski, J.J.1    Bocian, W.2    Brichford, N.L.3    Henderson, J.L.4
  • 56
    • 0037145992 scopus 로고    scopus 로고
    • For kinetic studies on the amino-alcohol catalyzed dialkylzinc addition to aldehydes see: (b) Buono, F.; Walsh, P. J.; Blackmond, D. G. J. Am. Chem. Soc. 2002, 124, 13652-13653.
    • (2002) J. Am. Chem. Soc. , vol.124 , pp. 13652-13653
    • Buono, F.1    Walsh, P.J.2    Blackmond, D.G.3
  • 59
    • 84942778419 scopus 로고
    • Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon Press: Oxford, UK
    • Boersma, J. In Comprehensive Organometallic Chemistry; Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon Press: Oxford, UK, 1982; Vol. 2, pp 823-862.
    • (1982) Comprehensive Organometallic Chemistry , vol.2 , pp. 823-862
    • Boersma, J.1
  • 60
    • 0038762733 scopus 로고    scopus 로고
    • Wavefuction, Inc.; Irvine, CA
    • Spartan 02'; Wavefuction, Inc.; Irvine, CA.
    • Spartan 02'
  • 64
    • 1842580369 scopus 로고    scopus 로고
    • note
    • 2Zn in excess, out of a maximum of 33 mL.
  • 65
    • 1842423260 scopus 로고    scopus 로고
    • note
    • The present experiment suggests that formation of 10 is kinetically favored over 11. However, during the course of the reaction scrambling between ethyl and phenyl on the Zn center of the catalyst cannot be ruled out.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.