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Volumn 11, Issue 23, 2005, Pages 7083-7090

Mechanistic investigation of the 2,5-diphenylpyrrolidine-catalyzed enantioselective α-chlorination of aldehydes

Author keywords

Asymmetric catalysis; Chlorination; Density functional calculations; Isotope effects; Kinetics; Sigmatropic rearrangement

Indexed keywords

ASYMMETRIC CATALYSIS; DENSITY FUNCTIONAL CALCULATIONS; ISOTOPE EFFECTS; KINETICS; SIGMATROPIC REARRANGEMENTS;

EID: 27944469988     PISSN: 09476539     EISSN: None     Source Type: Journal    
DOI: 10.1002/chem.200500776     Document Type: Conference Paper
Times cited : (74)

References (91)
  • 1
    • 11144263200 scopus 로고    scopus 로고
    • For recent general reviews on organocatalysis see, for example: a) P. I. Dalko, L. Moisan, Angew. Chem. 2004, 116, 5248;
    • (2004) Angew. Chem. , vol.116 , pp. 5248
    • Dalko, P.I.1    Moisan, L.2
  • 54
    • 2942702061 scopus 로고    scopus 로고
    • For recent reviews on α-halogenation of carbonyl compounds see: a) H. Ibrahim, A. Togni, A. Chem. Commun. 2004, 1147;
    • (2004) Chem. Commun. , pp. 1147
    • Ibrahim, H.1    Togni, A.2
  • 62
    • 27944495341 scopus 로고    scopus 로고
    • note
    • c) For a recent example of alkylation of α-chloroketones without loss of optical purity; see, for example:
  • 64
    • 27944485837 scopus 로고    scopus 로고
    • note
    • [18] at the B3LYP/6-31G(d) level of theory.
  • 69
    • 33645452966 scopus 로고
    • b) M. De Rosa, L. Carbognani, A. J. Febres, Org. Chem. 1981, 46, 2054; a 1,3-sigmatropic shift of a nosyloxy group has also been suggested as the mechanism for the nosyloxylation of enamines, see
    • (1981) Org. Chem. , vol.46 , pp. 2054
    • De Rosa, M.1    Carbognani, L.2    Febres, A.J.3
  • 81
    • 27944471087 scopus 로고    scopus 로고
    • note
    • This behaviour is not unusual in catalytic reactions as the concentration of the catalyst is usually much lower than that of the reactants.
  • 82
    • 27944469677 scopus 로고    scopus 로고
    • note
    • 1H NMR spectroscopy and GC. In all cases, the optical purity of the α-chlorobutanal formed in the reaction remained a constant 95 % ee throughout the reaction.
  • 83
    • 27944468387 scopus 로고    scopus 로고
    • note
    • 2.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.