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Volumn 131, Issue 31, 2009, Pages 11234-11241

Synthetic and mechanistic studies of Pd-catalyzed C-H arylation with diaryliodonium salts: Evidence for a bimetallic high oxidation state Pd intermediate

Author keywords

[No Author keywords available]

Indexed keywords

2-PHENYLPYRIDINE; ARYL GROUP; ARYLATIONS; CATALYTIC INTERMEDIATES; CATALYTIC REACTIONS; DIARYLIODONIUM SALTS; ELECTRONIC INFLUENCE; HIGH OXIDATION STATE; HIGH YIELD; KINETIC ISOTOPE EFFECTS; KINETIC ORDER; MECHANISTIC STUDIES; OXAZOLIDINONES; PD SPECIES; RESTING STATE;

EID: 68249136644     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja904116k     Document Type: Article
Times cited : (488)

References (102)
  • 10
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    • For recent reviews that discuss C-H arylation, see: a
    • For recent reviews that discuss C-H arylation, see: (a) Campeau, L. C.; Fagnou, K. Chem. Commun. 2006, 1253.
    • (2006) Chem. Commun , pp. 1253
    • Campeau, L.C.1    Fagnou, K.2
  • 23
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    • For examples of ligand-directed Ar-H oxidative coupling, see: (a) Hull, K. L, Lanni, E. L, Sanford, M. S. J. Am. Chem. Soc. 2006, 128, 14047
    • For examples of ligand-directed Ar-H oxidative coupling, see: (a) Hull, K. L.; Lanni, E. L.; Sanford, M. S. J. Am. Chem. Soc. 2006, 128, 14047.
  • 28
    • 24044442880 scopus 로고    scopus 로고
    • For other proposals of Pd-catalyzed ligand-directed C-H arylation via a PdII/IV mechanism, see ref 5a and: (a) Shabashov, D, Daugulis, O. Org. Lett. 2005, 7, 3657
    • II/IV mechanism, see ref 5a and: (a) Shabashov, D.; Daugulis, O. Org. Lett. 2005, 7, 3657.
  • 38
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    • 2I]X in C-H arylation, see: (a) Daugulis, O.; Zaitsev, V. G. Angew. Chem., Int. Ed. 2005, 44, 4046.
    • 2I]X in C-H arylation, see: (a) Daugulis, O.; Zaitsev, V. G. Angew. Chem., Int. Ed. 2005, 44, 4046.
  • 47
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    • IV with an iodine(III) reagent, see: (a) Lagunas, M. C.; Gossage, R. A.; Spek, A. L.; van Koten, G. Organometallics 1998, 17, 731.
    • IV with an iodine(III) reagent, see: (a) Lagunas, M. C.; Gossage, R. A.; Spek, A. L.; van Koten, G. Organometallics 1998, 17, 731.
  • 52
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    • 0 nanoparticles. For a review, see: Weck, M.; Jones, C. W. Inorg. Chem. 2007, 46, 1865.
    • 0 nanoparticles. For a review, see: Weck, M.; Jones, C. W. Inorg. Chem. 2007, 46, 1865.
  • 54
    • 68249157518 scopus 로고    scopus 로고
    • All of the order studies were conducted under conditions where [1] > ([4] + [Pd]). When [1] < ([4] + [Pd]), the kinetics become much more complex, and the order in [1] deviates from inverse third order (see Supporting Information p S16). This is expected based on the proposed mechanism, since under these conditions, the resting state of the oxidant is a mixture of 8 and 4.
    • All of the order studies were conducted under conditions where [1] > ([4] + [Pd]). When [1] < ([4] + [Pd]), the kinetics become much more complex, and the order in [1] deviates from inverse third order (see Supporting Information p S16). This is expected based on the proposed mechanism, since under these conditions, the resting state of the oxidant is a mixture of 8 and 4.
  • 55
    • 68249157519 scopus 로고    scopus 로고
    • -4.
    • -4.
  • 69
    • 68249139331 scopus 로고    scopus 로고
    • A Job plot at 80°C also displayed a maximum at 0.5 and is available in the Supporting Information.
    • A Job plot at 80°C also displayed a maximum at 0.5 and is available in the Supporting Information.
  • 71
  • 76
    • 34250861444 scopus 로고    scopus 로고
    • For recent selected examples of intramolecular kinetic isotope effects in Pd-catalyzed ligand-directed C-H functionalization reactions, see refs 14b, d, e, and f as well as: (a) Cai, G, Fu, Y, Li, Y, Wan, X, Shi, Z. J. Am. Chem. Soc. 2007, 129, 7666
    • For recent selected examples of intramolecular kinetic isotope effects in Pd-catalyzed ligand-directed C-H functionalization reactions, see refs 14b, d, e, and f as well as: (a) Cai, G.; Fu, Y.; Li, Y.; Wan, X.; Shi, Z. J. Am. Chem. Soc. 2007, 129, 7666.
  • 89
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    • Our initial report on the mechanism of Pd-catalyzed C-H acetoxylation used benzylpyridines as substrates ref 14h, However, recent studies have shown analogous order and KIE data with 2-phenylpyridine derivatives. Stowers, K. J, Sanford, M. S. manuscript in preparation
    • Our initial report on the mechanism of Pd-catalyzed C-H acetoxylation used benzylpyridines as substrates (ref 14h). However, recent studies have shown analogous order and KIE data with 2-phenylpyridine derivatives. Stowers, K. J.; Sanford, M. S. manuscript in preparation.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.