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Volumn 12, Issue 12, 2006, Pages 3218-3225

The importance of alkali cations in the [{RuCl2(p-cymene)} 2]-pseudo-dipeptide-catalyzed enantioselective transfer hydrogenation of ketones

Author keywords

Amino acids; Amino alcohols; Asymmetric catalysis; Hydrogen transfer; Ruthenium

Indexed keywords

AMINO ALCOHOLS; ASYMMETRIC CATALYSIS; HYDROGEN TRANSFER;

EID: 33646071853     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200501384     Document Type: Article
Times cited : (66)

References (63)
  • 5
    • 0000172128 scopus 로고    scopus 로고
    • (Eds.: E. N. Jacobsen, A. Pfaltz, H. Yamamoto), Springer-Verlag, Berlin
    • T. Ohkuma, R. Noyori in Comprehensive Asymmetric Catalysis I-III, Vol. 1 (Eds.: E. N. Jacobsen, A. Pfaltz, H. Yamamoto), Springer-Verlag, Berlin, 1999, pp. 199-246.
    • (1999) Comprehensive Asymmetric Catalysis I-III , vol.1 , pp. 199-246
    • Ohkuma, T.1    Noyori, R.2
  • 24
    • 33646031892 scopus 로고    scopus 로고
    • note
    • Also known as the Noyori catalytic system. binap = 1,1′- binaphthaIene-2,2′-diylbis(diphenylphosphane); dpen = 1,2- diphenylethylenediamine.
  • 26
    • 0035476955 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2001, 40, 3581-3585;
    • (2001) Angew. Chem. Int. Ed. , vol.40 , pp. 3581-3585
  • 33
    • 33646045693 scopus 로고    scopus 로고
    • note
    • Attempts to isolate and structurally characterize any ruthenium complex(es) containing pseudo-dipeptide ligands have so far been unsuccessful. Spectrometric studies (NMR and ESI-MS) of solutions of the catalytically active mixture have provided no conclusive information regarding the structure(s) of the catalyst or catalyst precursor.
  • 35
    • 1842394149 scopus 로고
    • (Eds.: A.-M. Sapse, P. von R. Schleyer), Wiley, New York
    • Note that lithium bonds are generally considerably stronger than their proton-centered counterparts, see: S. Scheiner in Lithium Chemistry (Eds.: A.-M. Sapse, P. von R. Schleyer), Wiley, New York, 1995, pp. 67-87.
    • (1995) Lithium Chemistry , pp. 67-87
    • Scheiner, S.1
  • 40
    • 33646066948 scopus 로고    scopus 로고
    • note
    • The TS structures were optimized with respect to convergence criteria and the Hessian eigenvalues.
  • 41
    • 33646038347 scopus 로고    scopus 로고
    • note
    • These results were confirmed by the use of basis sets with additional diffuse and polarization functions. There was a considerable difference between the structures obtained with the lacvp and lacvp* basis sets. Upgrading the basis sets to lacvp* or lacvp* + made little difference.
  • 55
    • 33646054669 scopus 로고    scopus 로고
    • note
    • Experimental and theoretical studies on Ru(arene)amino alcoholcatalyzed transfer hydrogenation of aryl ketones by Brandt et al. showed that this type of attractive interaction, which has been assumed to be dominated by electrostatic forces, is not the most important in determining the product enantioselectivity, see ref. [28].
  • 56
    • 0040151766 scopus 로고
    • Lithium ions display a lower affinity for [12]crown-4 than the corresponding sodium and potassium ions for [15]crown-5 and [18]crown-6, respectively, see: R. M. Izatt, J. S. Bradshaw, S. A. Nielsen, J. D. Lamb, J. J. Christensen, Chem. Rev. 1985, 85, 271-339.
    • (1985) Chem. Rev. , vol.85 , pp. 271-339
    • Izatt, R.M.1    Bradshaw, J.S.2    Nielsen, S.A.3    Lamb, J.D.4    Christensen, J.J.5
  • 63
    • 33646027405 scopus 로고
    • Schrödinger, Portland, OR
    • Jaguar versions 4.0 and 6.0, Schrödinger, Portland, OR, 1991-2000.
    • (1991) Jaguar Versions 4.0 and 6.0


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.