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Volumn , Issue 18, 2008, Pages 2815-2820

Synthesis of five- and six-membered-ring compounds by environmentally friendly radical cyclizations using kolbe electrolysis

Author keywords

Cyclization; Electron transfer; Green chemistry; Heterocycles; Radical reactions

Indexed keywords

CARBON; CARBOXYLIC ACID DERIVATIVE; TETRAHYDROFURAN DERIVATIVE; TETRAHYDROPYRAN DERIVATIVE;

EID: 56849098440     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-0028-1083547     Document Type: Article
Times cited : (35)

References (44)
  • 2
    • 56849120640 scopus 로고    scopus 로고
    • Curran, D. P. In Comprehensive Organic Synthesis, 4; Trost, B. M.; Fleming, I.; Semmelhack, M. F., Eds.; Pergamon: Oxford, 1991, 715.
    • (b) Curran, D. P. In Comprehensive Organic Synthesis, 4; Trost, B. M.; Fleming, I.; Semmelhack, M. F., Eds.; Pergamon: Oxford, 1991, 715.
  • 31
    • 33847622311 scopus 로고    scopus 로고
    • 4th ed; Lund, H, Hammerich, O, Eds, Marcel Dekker: New York
    • (b) Torii, S.; Tanaka, H. In Organic Electrochemistry, 4th ed; Lund, H.; Hammerich, O., Eds.; Marcel Dekker: New York, 2001, 499.
    • (2001) Organic Electrochemistry , pp. 499
    • Torii, S.1    Tanaka, H.2
  • 32
    • 84975447739 scopus 로고
    • For the preparation of Kolbe dimers, see: a
    • For the preparation of Kolbe dimers, see: (a) Brown, A. C.; Walker, J. Justus Liebigs Ann. Chem. 1891, 261, 107.
    • (1891) Justus Liebigs Ann. Chem , vol.261 , pp. 107
    • Brown, A.C.1    Walker, J.2
  • 34
    • 84987486482 scopus 로고
    • For Kolbe cross-coupling reactions, see: a
    • For Kolbe cross-coupling reactions, see: (a) Seebach, D.; Renaud, P. Helv. Chim. Acta 1985, 68, 2342.
    • (1985) Helv. Chim. Acta , vol.68 , pp. 2342
    • Seebach, D.1    Renaud, P.2
  • 39
    • 37049124202 scopus 로고    scopus 로고
    • Although a radical adsorbed on an electrode surface might display altered behavior, we believe that the slightly nucleophilic character of the alkyl radical 3 is preserved. See, for example: (a) Chkir, M, Lelandais, D. J. Chem. Soc, Chem. Commun. 1971, 1369
    • Although a radical adsorbed on an electrode surface might display altered behavior, we believe that the slightly nucleophilic character of the alkyl radical 3 is preserved. See, for example: (a) Chkir, M.; Lelandais, D. J. Chem. Soc., Chem. Commun. 1971, 1369.
  • 43
    • 56849096377 scopus 로고    scopus 로고
    • Representative Procedure for the Electrochemical Synthesis of Carbocycles and Heterocycles In an undivided beaker-type cell (100 mL) bearing two electrodes of platinum foil (1.3 cm x 1.3 cm x 0.5 mm, acid 22a (500 mg, 2.47 mmol) and a fivefold excess of AcOH (707 mL, 12.38 mmol) were dissolved in MeOH (50 mL, The acids were partially neutralized by NaOMe to obtain a current density of 100 mA/cm2. The reaction was monitored by TLC or GC and stopped when the pH of the solution changed from 5 to 8; normally 1.2-1.4 F/mol had been consumed. The reaction mixture was then concentrated under reduced pressure. The residue was treated with a sat. aq solution of NaHCO3, and extracted with CH2Cl2 (3 x 10 mL, The organic layers were collected, dried on Na2SO 4, and concentrated under reduced pressure. The crude material was purified by flash chromatography (PE-Et2O, 4:1) to afford 366 mg of compound 23
    • 3): δ = 14.20 (A), 14.23 (B), 16.1 (A), 16.2 (B), 30.3 (B), 30.8 (A), 42.39 (A), 42.41 (B), 42.90 (B), 42.93 (A), 60.4 (A + B), 68.0 (A), 68.1 (B), 71.1 (A), 71.9 (B), 175.7 (A + B). MS (APCI): m/z (%) = 82.9 (15), 126.9 (95), 144.9 (15), 173.0(10). HRMS (sodium complex): m/z calcd: 195.0997; found: 195.0998.
  • 44
    • 56849102041 scopus 로고    scopus 로고
    • Compound 27 originates from a possible rearrangement of either the primary radical or the derived carbocation. Studies are currently ongoing to elucidate this intriguing transformation.
    • Compound 27 originates from a possible rearrangement of either the primary radical or the derived carbocation. Studies are currently ongoing to elucidate this intriguing transformation.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.