메뉴 건너뛰기




Volumn 52, Issue 3, 2011, Pages 381-384

The highly enantioselective 1,3-dipolar cycloaddition of alkyl glyoxylate-derived nitrones to E-crotonaldehyde catalyzed by hybrid diamines

Author keywords

1,3 Dipolar cycloaddition; Amino acids; Asymmetric organocatalysis; Binaphthyl derivatives; Nitrones

Indexed keywords

ALKYL GLYOXYLIC ACID; AMINO ACID DERIVATIVE; CROTONALDEHYDE; DIAMINE DERIVATIVE; GLYOXYLIC ACID DERIVATIVE; LEVO ALPHA AMINO ACID; NITRONE DERIVATIVE; PHENYLALANINE; UNCLASSIFIED DRUG;

EID: 78650231701     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2010.11.015     Document Type: Article
Times cited : (32)

References (37)
  • 14
    • 77951788015 scopus 로고    scopus 로고
    • For a comparison between organocatalysed and Lewis acid catalysed 1,3-dipolar cycloadditions, see C. Nájera, J.M. Sansano, and M. Yus J. Braz. Chem. Soc. 21 2010 377 412
    • (2010) J. Braz. Chem. Soc. , vol.21 , pp. 377-412
    • Nájera, C.1    Sansano, J.M.2    Yus, M.3
  • 19
    • 78650253648 scopus 로고    scopus 로고
    • note
    • 3): δ = 198.1, 170.1, 136.2, 129.3, 128.6, 127.8, 74.2, 66.8, 65.3, 62.0, 61.2, 19.4, 14.2.
  • 20
    • 78650238611 scopus 로고    scopus 로고
    • note
    • 2 = 19.3 min.
  • 22
    • 33646535639 scopus 로고    scopus 로고
    • For recent selected examples, see: W. Xu, A. Kong, and X. Lu J. Org. Chem. 71 2006 3854 3858
    • (2006) J. Org. Chem. , vol.71 , pp. 3854-3858
    • Xu, W.1    Kong, A.2    Lu, X.3
  • 35
    • 78650235029 scopus 로고    scopus 로고
    • note
    • +: 267.1321, found: 267.1313. Optical purity (86% ee) was determined by HPLC analysis of its dibenzylic derivative.
  • 36
    • 78650248688 scopus 로고    scopus 로고
    • note
    • +: 281.1477, found: 281.1472.
  • 37
    • 78650240654 scopus 로고    scopus 로고
    • note
    • 4 in MeOH at 0 °C for 30 min. After aqueous work-up, the diastereomerically pure 3,4-trans-alcohol was purified by flash chromatography on silica gel (hexane-EtOAc) and isolated in 60-70% yield. The ee values of the alcohols were determined by chiral HPLC. All new compounds obtained here had correct analytical and spectral data. © 2010 Elsevier Ltd. All rights reserved.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.