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Volumn 8, Issue 23, 2006, Pages 5353-5355

Enantioselective equilibration-access to chiral aldol adducts of mandelic acid esters

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EID: 33845245590     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol062252w     Document Type: Article
Times cited : (10)

References (37)
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    • Schetter, B.; Mahrwald, R. In Quaternary Stereocenters; Christoffers, J., Baro, A., Eds.; Wiley-VCH: Weinheim, 2005; pp 51-81.
    • (2005) Quaternary Stereocenters , pp. 51-81
    • Schetter, B.1    Mahrwald, R.2
  • 15
    • 0038068392 scopus 로고
    • (f) For unsatisfying results in aldol additions with aldehydes and mercaptolactic acid, see: Strijtveen, B.; Kellog, M. Tetrahedron 1987, 43, 5039-5054.
    • (1987) Tetrahedron , vol.43 , pp. 5039-5054
    • Strijtveen, B.1    Kellog, M.2
  • 16
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    • For a comprehensive overview, see
    • For a comprehensive overview, see: (a) Seebach, D.; Sting, A. R.; Hoffmann, M. Angew. Chem. 1996, 108, 2880-2921.
    • (1996) Angew. Chem. , vol.108 , pp. 2880-2921
    • Seebach, D.1    Sting, A.R.2    Hoffmann, M.3
  • 18
    • 33845271587 scopus 로고    scopus 로고
    • note
    • A partial retroaldol process during the deprotection of the acetals under basic conditions is assumed as the source of racemization.
  • 26
    • 0141920762 scopus 로고    scopus 로고
    • For an overview, see
    • For an overview, see: Mahrwald, R. Curr. Org. Chem. 2003, 7, 1713-1723.
    • (2003) Curr. Org. Chem. , vol.7 , pp. 1713-1723
    • Mahrwald, R.1
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    • 33845248552 scopus 로고    scopus 로고
    • note
    • 4 also indicate a racemization. An exhaustive racemization of 3a at room temperature was detected after 15 min. Currently, we are not able to discriminate between a racemization of chiral aldol products and a racemic aldol addition.
  • 34
    • 0035967764 scopus 로고    scopus 로고
    • (b) Equilibration in the presence of an iodonium ion: Takasu, K.; Ueno, M.; Ihara, M. J. Org. Chem. 2001, 66, 4667-4672.
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    • Takasu, K.1    Ueno, M.2    Ihara, M.3
  • 37
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    • Support for this proposed model is given by transition-state models of intramolecular ester hydrolysis, See: Brown, R. S.; Aman, A. J. Org. Chem. 1997, 62, 4816-4820.
    • (1997) J. Org. Chem. , vol.62 , pp. 4816-4820
    • Brown, R.S.1    Aman, A.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.