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Volumn 7, Issue 23, 2005, Pages 5171-5174

Catalytic addition methods for the synthesis of functionalized diazoacetoacetates and application to the construction of highly substituted cyclobutanones

Author keywords

[No Author keywords available]

Indexed keywords

ACETIC ACID DERIVATIVE; CYCLOBUTANE DERIVATIVE; RHODIUM; SCANDIUM;

EID: 28244496616     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol052003s     Document Type: Article
Times cited : (43)

References (40)
  • 13
    • 0346265937 scopus 로고
    • Hegedus, L. S., Ed.; Pergammon Press: New York, Chapter 5.2
    • Doyle, M. P. In Comprehensive Organometallic Chemistry II; Hegedus, L. S., Ed.; Pergammon Press: New York, 1995; Vol. 12, Chapter 5.2.
    • (1995) Comprehensive Organometallic Chemistry II , vol.12
    • Doyle, M.P.1
  • 30
  • 31
    • 28244449015 scopus 로고    scopus 로고
    • Jacobsen, E. N., Pfaltz, A., Yamamoto, H., Eds.; Springer-Verlag: Berlin, Germany, Chapter 29
    • (d) Carreira, E. M. In Comprehensive Asymmetric Catalysis; Jacobsen, E. N., Pfaltz, A., Yamamoto, H., Eds.; Springer-Verlag: Berlin, Germany, 1999; Chapter 29.
    • (1999) Comprehensive Asymmetric Catalysis
    • Carreira, E.M.1
  • 36
    • 28244459425 scopus 로고    scopus 로고
    • note
    • Typical Mukaiyama aldol addition procedure: To a dry 5-mL round-bottomed flask fitted with a septum was added anhydrous scandium(III) triflate (14 mg, 0.030 mmol) and 3.0 mL of anhydrous dichloromethane. Vinyldiazoacetate 2 (564 mg, 2.20 mmol) was then added dropwise over 5 min, using a 1 mL syringe, followed by aldehyde (1.50 mmol). The reaction mixture was stirred at room temperature for 10 h, during which time the color of the solution changed from orrange to pale yellow. (The reactions with 1a and 1c were found to be incomplete after 6 h.) The product was isolated by flash column chromatography on silica gel, eluting with 9:1 hexane/ethyl acetate.
  • 37
    • 28244472043 scopus 로고    scopus 로고
    • note
    • 3 produced 77% 3a, 77% 3b, 75% 3c, and 72% 3d.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.