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Volumn , Issue 2, 2007, Pages 298-302

Enantioselective diels-alder reactions: Effect of the achiral template on reactivity and selectivity

Author keywords

Achiral template; Chelation; Chiral lewis acid; Diels Alder

Indexed keywords

2 PYRROLIDONE DERIVATIVE; ACRYLIC ACID DERIVATIVE; COPPER; LEWIS ACID; PHENYLBUTAZONE; PYRAZOLIDINONE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 33847044805     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-968014     Document Type: Article
Times cited : (11)

References (41)
  • 1
    • 0036263839 scopus 로고    scopus 로고
    • For comprehensive reviews on enantioselective Diels-Alder reactions, see: a
    • For comprehensive reviews on enantioselective Diels-Alder reactions, see: (a) Corey, E. J. Angew. Chem. Int. Ed. 2002, 41, 1650.
    • (2002) Angew. Chem. Int. Ed , vol.41 , pp. 1650
    • Corey, E.J.1
  • 3
    • 33749828310 scopus 로고    scopus 로고
    • For a recent review on chiral bisoxazolines, see
    • For a recent review on chiral bis(oxazolines), see: Desimoni, G.; Faita, G.; Jørgensen, K. A. Chem. Rev. 2006, 106, 3561.
    • (2006) Chem. Rev , vol.106 , pp. 3561
    • Desimoni, G.1    Faita, G.2    Jørgensen, K.A.3
  • 12
    • 33847008240 scopus 로고    scopus 로고
    • See ref. 3a
    • (a) See ref. 3a.
  • 21
    • 33847036648 scopus 로고    scopus 로고
    • See ref. 3d and 4
    • (a) See ref. 3d and 4.
  • 25
    • 33847028704 scopus 로고    scopus 로고
    • See ref. 8b
    • (a) See ref. 8b.
  • 26
    • 20444457507 scopus 로고    scopus 로고
    • For recent examples from our laboratory, see: b
    • For recent examples from our laboratory, see: (b) Sibi, M. P.; Stanley, L. M.; Jasperse, C. P. J. Am. Chem. Soc. 2005, 127, 8276.
    • (2005) J. Am. Chem. Soc , vol.127 , pp. 8276
    • Sibi, M.P.1    Stanley, L.M.2    Jasperse, C.P.3
  • 29
    • 33847019970 scopus 로고    scopus 로고
    • All new compounds showed analytical and spectral characteristics consistent with their structure. An experimental procedure and spectral data for select cycloadducts are provided
    • All new compounds showed analytical and spectral characteristics consistent with their structure. An experimental procedure and spectral data for select cycloadducts are provided.
  • 30
    • 0029882080 scopus 로고    scopus 로고
    • Templates 3, 4, 8 and 11-14 are commercially available. Templates 5-7, 9, and 10 were prepared using literature procedures. For compound 5, see: (a) Reddy, P. A.; Hsiang, B. C. H.; Latifi, T. N.; Hill, W.; Woodward, K. E.; Rothman, S. M.; Ferrendelli, J. A.; Covey, D. A. J. Med. Chem. 1996, 39, 1898.
    • Templates 3, 4, 8 and 11-14 are commercially available. Templates 5-7, 9, and 10 were prepared using literature procedures. For compound 5, see: (a) Reddy, P. A.; Hsiang, B. C. H.; Latifi, T. N.; Hill, W.; Woodward, K. E.; Rothman, S. M.; Ferrendelli, J. A.; Covey, D. A. J. Med. Chem. 1996, 39, 1898.
  • 31
    • 10144230713 scopus 로고    scopus 로고
    • For compounds 6 and 7, see: (b) Bhatia, P. A.; Brooks, C. D. W.; Basha, A.; Ratajczyk, J. D.; Gunn, B. P.; Bouska, J. B.; Lanni, C.; Young, P. R.; Bell, R. L.; Carter, G. W. J. Med. Chem. 1996, 39, 3938.
    • For compounds 6 and 7, see: (b) Bhatia, P. A.; Brooks, C. D. W.; Basha, A.; Ratajczyk, J. D.; Gunn, B. P.; Bouska, J. B.; Lanni, C.; Young, P. R.; Bell, R. L.; Carter, G. W. J. Med. Chem. 1996, 39, 3938.
  • 33
    • 33847069991 scopus 로고    scopus 로고
    • For compound 9, see ref. 11b.
    • (d) For compound 9, see ref. 11b.
  • 38
    • 33847069556 scopus 로고    scopus 로고
    • See ref. 12c
    • (d) See ref. 12c.
  • 40
    • 33847028324 scopus 로고    scopus 로고
    • See ref. 3c
    • (a) See ref. 3c.
  • 41
    • 33847017245 scopus 로고    scopus 로고
    • General Procedure for the Enantioselective Diels-Alder Reactions. A mixture of 1 (20 mg, 0.055 mmol) and Cu(OTf)2 (18 mg, 0.05 mmol) in CH2Cl2 (2 mL) was stirred at r.t. for 1 h to give a clear green solution. A solution of dienophile (0.5 mmol) in CH 2Cl2 (2 mL) was added at the temperature given in the tables, followed by freshly distilled cyclopentadiene (165 mg, 2.5 mmol, The reaction was monitored by TLC. After completion of the reaction, H2O (2 mL) was added and the mixture was extracted with CH2Cl 2, washed with brine and dried. The solvent was evaporated and the residue was purified by chromatography to give pure product. The endo/exo ratio was evaluated on the basis of 1H NMR spectrum and the enantiomeric purity was determined by HPLC. DA Adduct from Compound 4, α]D25 -176.3 c 2.2, CHCl3, 97% ee estimated on t
    • 3): δ = 20.7, 26.4, 26.6, 36.5, 44.3, 47.2, 47.3, 49.7, 52.8, 57.1, 60.8, 127.6, 128.6, 129.1, 131.1, 138.4, 140.0, 171.6, 174.6.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.