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Volumn , Issue 2, 2007, Pages 321-323

A novel NaI-promoted ring expansion of cyclopropylidene alcohols to dihydropyrans

Author keywords

Cyclopropylidene alcohols; Dihydropyrans; Iodide anion; Ring expansion

Indexed keywords

ALCOHOL DERIVATIVE; CYCLOPROPYLIDENE ALCOHOL DERIVATIVE; DIHYDROPYRAN DERIVATIVE; PYRAN DERIVATIVE; SODIUM IODIDE; UNCLASSIFIED DRUG;

EID: 33847072708     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-968016     Document Type: Article
Times cited : (7)

References (44)
  • 21
    • 0001487604 scopus 로고    scopus 로고
    • Synthesis of MCPs: (a) Brandi, A.; Goti, A. Chem. Rev. 1998, 98, 589.
    • Synthesis of MCPs: (a) Brandi, A.; Goti, A. Chem. Rev. 1998, 98, 589.
  • 22
    • 0038640190 scopus 로고    scopus 로고
    • Recent reviews of MCPs: (b) Brandi, A.; Cicchi, S.; Cordero, F. M.; Goti, A. Chem. Rev. 2003, 103, 1213.
    • Recent reviews of MCPs: (b) Brandi, A.; Cicchi, S.; Cordero, F. M.; Goti, A. Chem. Rev. 2003, 103, 1213.
  • 44
    • 33847026391 scopus 로고    scopus 로고
    • Typical Procedure for the Synthesis of Compound 3. A solution of 1a (160 mg, 1.0 mmol) with NaI (225 mg, 1.5 mmol) in 5 mL of MeCN-AcOH (10:1) was stirred at 80°C for 12 h. The mixture was then diluted with 10 mL of H2O and extracted three times with Et2O. The organic phases were combined and dried over MgSO4. After evaporation, the residues were purified via chromatography on silica gel with n-hexane-EtOAc as the eluent to afford 108 mg (67, of 3a as a liquid. IR (neat, 1652, 1600, 1448 cm-1. 1H NMR (400 MHz, CDCl3, δ, 7.25-7.34 (m, 5 H, 6.19-6.21 (m, 1 H, 4.50 (q, J, 2.8 Hz, 2 H, 3.85 (t, J, 5.6 Hz, 2 H, 2.30-2.34 (m, 2 H, 13C NMR (100 MHz, CDCl3, δ, 138.4, 136.1, 128.5, 127.3, 124.7, 121.2, 66.8, 64.0, 25.5. MS (70 eV, m/z, 160 36.26, M
    • +].


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.