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Volumn 9, Issue 16, 2007, Pages 3129-3132

Direct lactone formation by using hypervalent iodine(III) reagents with KBr via selective C-H abstraction protocol

Author keywords

[No Author keywords available]

Indexed keywords

BENZOIC ACID DERIVATIVE; BROMIDE; CARBOXYLIC ACID; DYES, REAGENTS, INDICATORS, MARKERS AND BUFFERS; IODINE; LACTONE; PHTHALIMIDE DERIVATIVE; POTASSIUM BROMIDE; POTASSIUM DERIVATIVE;

EID: 34547950171     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol071315n     Document Type: Article
Times cited : (119)

References (48)
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    • Devon, T. K.; Scott, A. I. In Handbook of Naturally Occurring Compounds; Academic Press: New York, 1975; 1, 249.
    • (c) Devon, T. K.; Scott, A. I. In Handbook of Naturally Occurring Compounds; Academic Press: New York, 1975; Vol. 1, 249.
  • 12
    • 12944312214 scopus 로고    scopus 로고
    • γ-Lactone formation from aliphatic carboxylic acids having suitably activated benzyl positions: Jevric, M.; Taylor, D. K.; Greatrex, B. W.; Tiekink, E. R. T. Tetrahedron 2005, 67, 1885.
    • γ-Lactone formation from aliphatic carboxylic acids having suitably activated benzyl positions: Jevric, M.; Taylor, D. K.; Greatrex, B. W.; Tiekink, E. R. T. Tetrahedron 2005, 67, 1885.
  • 16
    • 0001213492 scopus 로고    scopus 로고
    • For recent reviews: a
    • For recent reviews: (a) Stang, P. J.; Zhdankin, V. V. Chem. Rev. 1996, 96, 1123.
    • (1996) Chem. Rev , vol.96 , pp. 1123
    • Stang, P.J.1    Zhdankin, V.V.2
  • 22
    • 0013167416 scopus 로고    scopus 로고
    • Wirth, T, Ed, Springer-Verlag: Berlin, Germany
    • (g) Hypervalent Iodine Chemistry; Wirth, T., Ed.; Springer-Verlag: Berlin, Germany, 2003.
    • (2003) Hypervalent Iodine Chemistry
  • 25
    • 0346984789 scopus 로고    scopus 로고
    • Benzylic azidation of phenyl ethers with phenyliodine bis(trifluoroacetate): Kita, Y.; Tohma, H.; Takada, T.; Mitoh, S.; Fujita, S.; Gyoten, M. Synlett 1994, 427.
    • Benzylic azidation of phenyl ethers with phenyliodine bis(trifluoroacetate): Kita, Y.; Tohma, H.; Takada, T.; Mitoh, S.; Fujita, S.; Gyoten, M. Synlett 1994, 427.
  • 26
    • 0034599884 scopus 로고    scopus 로고
    • Generation and detection of active iodine(III)-Br species in water by the combination of PIDA or iodosobenzene with KBr, see: (a) Tohma, H.; Takizawa, S.; Maegawa, T.; Kita, Y. Angew. Chem., Int. Ed. 2000, 39, 1306.
    • Generation and detection of active iodine(III)-Br species in water by the combination of PIDA or iodosobenzene with KBr, see: (a) Tohma, H.; Takizawa, S.; Maegawa, T.; Kita, Y. Angew. Chem., Int. Ed. 2000, 39, 1306.
  • 28
    • 34547949847 scopus 로고    scopus 로고
    • Iodine(III) oxidations in the presence of bromide. LiBr or NaBr: (a) Braddock, D. C; Cansell, G.; Hermitage, S. A. Synlett 2004, 461.
    • Iodine(III) oxidations in the presence of bromide. LiBr or NaBr: (a) Braddock, D. C; Cansell, G.; Hermitage, S. A. Synlett 2004, 461.
  • 33
    • 34547929377 scopus 로고    scopus 로고
    • In Group 1 alkali metal bromide, yield of 2a decreased in order with KBr > NaBr »LiBr. LiBr induced remarkable bromination at both aromatic and benzyl carbons.
    • In Group 1 alkali metal bromide, yield of 2a decreased in order with KBr > NaBr »LiBr. LiBr induced remarkable bromination at both aromatic and benzyl carbons.
  • 36
    • 34547959296 scopus 로고    scopus 로고
    • Representative experimental procedure: In a flame-dried two-necked round-bottomed flask, under nitrogen, the iodine(III) reagent 1 (211 mg, 0.6 mmol) was added to a stirred suspension of 4-pheyl butyric acid 2a (82 mg, 0.5 mmol) and KBr (60 mg, 0.5 mmol) in dry CH2Cl2 (5 mL) then the mixture was vigorously stirred for 8 h at 30 °C After checking the reaction completion by TLC, saturated aq NaHCO3 was added to the mixture, which was then stirred for an additional 5 min. The organic layer was separated, washed with saturated aq NaHCO3and dilute aq sodium thiosulfate, and dried over anhydrous Na2SO 4. After removal of the solvents, the residue was subjected to silica gel column chromatography (eluents: n-hexane/AcOEt) to give the y-phenyl y-butyrolactone 3a (65 mg, 80, as a white powder. Unreacted 2a 9.8 mg, 12, was recovered from the combined aqueous phase by extraction of dichloro
    • 4. After removal of the solvents, the residue was subjected to silica gel column chromatography (eluents: n-hexane/AcOEt) to give the y-phenyl y-butyrolactone 3a (65 mg, 80%) as a white powder. Unreacted 2a (9.8 mg, 12%) was recovered from the combined aqueous phase by extraction of dichloromethane after acidifying the solution.
  • 42
    • 34547933401 scopus 로고    scopus 로고
    • - and TMSBr produce hypobromite or the bromate(I) complex and molecular bromine, respectively. See, refs 9c-e.
    • - and TMSBr produce hypobromite or the bromate(I) complex and molecular bromine, respectively. See, refs 9c-e.
  • 43
    • 34547933955 scopus 로고    scopus 로고
    • Isolation of cyclic 1(III)-Br compounds and their use as radical initiators: Amey, R. L.; Martin, J. C. J. Am. Chem. Soc. 1979, 10, 3060.
    • Isolation of cyclic 1(III)-Br compounds and their use as radical initiators: Amey, R. L.; Martin, J. C. J. Am. Chem. Soc. 1979, 10, 3060.
  • 44
    • 31444434226 scopus 로고    scopus 로고
    • Direct phthalide formation with metal oxidants: (a) Lee, J. M.; Chang, S. Tetrahedron Lett. 2006, 47, 1375 and references cited therein,
    • Direct phthalide formation with metal oxidants: (a) Lee, J. M.; Chang, S. Tetrahedron Lett. 2006, 47, 1375 and references cited therein,
  • 47
    • 0029153094 scopus 로고    scopus 로고
    • Phthalide formation with hypervalent iodine(III) reagents under UV irradiation was reported with few example of substrates; however, the procedure was not applicable to aliphatic carboxylic acids because of the rapid decarboxylation: (a) Togo, H.; Muraki, T.; Yokoyama, M. Tetrahedron Lett. 1995, 36, 7089.
    • Phthalide formation with hypervalent iodine(III) reagents under UV irradiation was reported with few example of substrates; however, the procedure was not applicable to aliphatic carboxylic acids because of the rapid decarboxylation: (a) Togo, H.; Muraki, T.; Yokoyama, M. Tetrahedron Lett. 1995, 36, 7089.


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