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Volumn , Issue 9, 2008, Pages 1345-1348

Rearrangement of 2-hydroxyalkylazetidines into 3-fluoropyrrolidines

Author keywords

Azetidines; DAST; Fluorination; Pyrrolidines

Indexed keywords

ANION; AZETIDINE DERIVATIVE; FLUORIDE; PENTANE; PYRROLIDINE DERIVATIVE;

EID: 45749106438     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1072770     Document Type: Article
Times cited : (25)

References (31)
  • 28
    • 45749132500 scopus 로고    scopus 로고
    • Crystal structure has been deposited at the Cambridge Crystallographic Data Centre and allocated the deposition number CCDC 676883
    • Crystal structure has been deposited at the Cambridge Crystallographic Data Centre and allocated the deposition number CCDC 676883.
  • 29
    • 45749134545 scopus 로고    scopus 로고
    • The kinetic control invoked here is also supported by the chemical stability of 36, which does not rearrange when heated at 100°C in toluene for 8 h.
    • The kinetic control invoked here is also supported by the chemical stability of 36, which does not rearrange when heated at 100°C in toluene for 8 h.
  • 30
    • 45749092069 scopus 로고    scopus 로고
    • General Procedure for the Reaction of Azetidinols with DAST: To a solution of the required 2-hydroxyalkylazetidine (1 mmol) in anhyd CH 2Cl2 (7 mL) cooled at 0°C under argon was added dropwise diethylaminosulfur trifluoride (245 μL, 2 mmol, The resulting solution was allowed to reach r.t, 1 h) and was stirred for 1 h. The reaction mixture was then basified with 1 M NaOH (5 mL, The layers were separated and the aqueous layer was extracted with CH2Cl2 (2 x 10 mL, Drying over MgSO4, filtration, and evaporation of the solvent under reduced pressure gave a residue that was purified by flash chromatography. Selected data: Compound 26: yield (from 10, 81, colorless oil; Rf 0.75 (EtOAc, α]D25 -46.1 (c, 0.57, CHCl3, 1H NMR (300 MHz, δ, 1.40 (d, J, 6.6 Hz, 3 H, Me, 1.80-2.15 (m, 2 H, H4, H4′, 2.50-3.75 m
    • +].


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.