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Volumn 129, Issue 46, 2007, Pages 14120-14121

Water as nucleophile in palladium-catalyzed oxidative carbohydroxylation of allene-substituted conjugated dienes

Author keywords

[No Author keywords available]

Indexed keywords

1,4 BENZOQUINONE; ALKADIENE; ALLENE DERIVATIVE; PALLADIUM; SOLVENT; WATER;

EID: 36448980297     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja075488j     Document Type: Article
Times cited : (92)

References (44)
  • 2
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    • (b) Li, C.-J. Chem. Rev. 2005, 105, 3095.
    • (2005) Chem. Rev , vol.105 , pp. 3095
    • Li, C.-J.1
  • 21
    • 0029923002 scopus 로고    scopus 로고
    • - on a (π-allyl)palladium complex, see: Nilsson, Y. I. M.; Aranyos, A.; Andersson, P. G.; Bäckvall, J. E.; Parrain, J. L.; Ploteau, C.; Quintard, J. P. J. Org. Chem. 1996, 61, 1825.
    • - on a (π-allyl)palladium complex, see: Nilsson, Y. I. M.; Aranyos, A.; Andersson, P. G.; Bäckvall, J. E.; Parrain, J. L.; Ploteau, C.; Quintard, J. P. J. Org. Chem. 1996, 61, 1825.
  • 24
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    • Bäckvall, J. E, Ed, Wiley-VCH: Weinheim, Germany
    • (a) Modem Oxidation Methods; Bäckvall, J. E., Ed.; Wiley-VCH: Weinheim, Germany, 2004.
    • (2004) Modem Oxidation Methods
  • 28
    • 29344449953 scopus 로고    scopus 로고
    • For a few C-C bond forming aerobic reactions in organic solvents, see: (a) Trend, R. M.; Ramtohul, Y. K.; Stoltz, B. M. J. Am. Chem. Soc. 2005, 127, 17778.
    • For a few C-C bond forming aerobic reactions in organic solvents, see: (a) Trend, R. M.; Ramtohul, Y. K.; Stoltz, B. M. J. Am. Chem. Soc. 2005, 127, 17778.
  • 30
    • 33644760299 scopus 로고    scopus 로고
    • For a recent interesting non-aerobic oxidation with C-C bond formation via outer sphere nucleophilic attack of indole on an (olefin)palladium complex, see: Liu, C, Widenhoefer, R. A. Chem, Eur. J. 2006, 12, 2371
    • (c) For a recent interesting non-aerobic oxidation with C-C bond formation via outer sphere nucleophilic attack of indole on an (olefin)palladium complex, see: Liu, C.; Widenhoefer, R. A. Chem. - Eur. J. 2006, 12, 2371.
  • 36
    • 36448937268 scopus 로고    scopus 로고
    • For the optimization of the reaction, see the Supporting Information
    • For the optimization of the reaction, see the Supporting Information.
  • 37
    • 20344388819 scopus 로고    scopus 로고
    • Solid reactants can be used in pure water when the rest of the reagents are liquids, but not when all the components are solids. See for example
    • Solid reactants can be used in pure water when the rest of the reagents are liquids, but not when all the components are solids. See for example: Narayan, S.; Muldoon, J.; Finn, M. G.; Fokin, V. V.; Kolb, H. C.; Sharpless, K. B. Angew. Chem., Int. Ed. 2005, 44, 3275.
    • (2005) Angew. Chem., Int. Ed , vol.44 , pp. 3275
    • Narayan, S.1    Muldoon, J.2    Finn, M.G.3    Fokin, V.V.4    Kolb, H.C.5    Sharpless, K.B.6
  • 38
    • 0038327985 scopus 로고    scopus 로고
    • Similar coupled catalytic systems have been previously used by our group in 1,4-oxidation of dienes and in allylic oxidations: (a) Bäckvall, J.-E.; Hopkins, R. B.; Grennberg, H.; Mader, M.; Awasthi, A. K. J. Am. Chem. Soc. 1990, 112, 5160.
    • Similar coupled catalytic systems have been previously used by our group in 1,4-oxidation of dienes and in allylic oxidations: (a) Bäckvall, J.-E.; Hopkins, R. B.; Grennberg, H.; Mader, M.; Awasthi, A. K. J. Am. Chem. Soc. 1990, 112, 5160.
  • 40
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    • Reference 14b
    • (c) Reference 14b.
  • 41
    • 36448930693 scopus 로고    scopus 로고
    • The stereochemistry of compound 2a was established by converting it to the known acetate see ref 13a
    • The stereochemistry of compound 2a was established by converting it to the known acetate (see ref 13a).
  • 42
    • 36448989153 scopus 로고    scopus 로고
    • One reviewer suggested an alternative mechanism via Pd(II)-promoted addition of H2O into the 1,3-diene to form a (π-allyl)Pd intermediate followed by allene insertion. Attempts to generate such a (π-allyl)Pd intermediate from a 1,3-cyclohexadiene analogue to 1a, where n-Bu is attached to the CHE2 group in place of -CH=·=CMe2, failed. Under stoichiometric conditions similar to those used in the catalytic reaction, there was no reaction with neither Pd(OAc)2 nor Pd(TFA)2. Further support for the mechanism in Scheme 3 was provided by monitoring the stoichiometric reaction of 1a with Pd(TFA)2 in THF-d8 by 1H NMR, which shows that the first step is formation of vinyl complex A see Supporting Information, Insertion of the diene to give allyl intermediates requires BQ, and C-O bond formation is the last step of the sequence
    • 1H NMR, which shows that the first step is formation of vinyl complex A (see Supporting Information). Insertion of the diene to give allyl intermediates requires BQ, and C-O bond formation is the last step of the sequence.
  • 43
    • 36448965790 scopus 로고    scopus 로고
    • 2 as catalyst gave 80% yield of 2a, and the allylic acetate is completely stable under the reaction conditions.
    • 2 as catalyst gave 80% yield of 2a, and the allylic acetate is completely stable under the reaction conditions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.