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Volumn 7, Issue 11, 2005, Pages 2253-2256

Efficient dendritic diphosphino Pd(II) catalysts for the Suzuki reaction of chloroarenes

Author keywords

[No Author keywords available]

Indexed keywords

BENZENEBORONIC ACID; LEAD; POLYCYCLIC AROMATIC HYDROCARBON DERIVATIVE;

EID: 20644470924     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol050645+     Document Type: Article
Times cited : (69)

References (73)
  • 8
    • 0001804313 scopus 로고
    • For a review of Brunner's pionering work in the area, see: Brunner, H. J. Organomet. Chem. 1995, 500, 39.
    • (1995) J. Organomet. Chem. , vol.500 , pp. 39
    • Brunner, H.1
  • 13
    • 20644446084 scopus 로고    scopus 로고
    • Ref 4a
    • (c) Ref 4a.
  • 18
    • 20644448410 scopus 로고    scopus 로고
    • note
    • (a) Synthesis of these dendrimers and Heck catalysis were reported by Reetz, et al. (ref 3a);
  • 26
    • 17144421373 scopus 로고    scopus 로고
    • Astruc, D., Ed.; Wiley-VCH: Weinheim
    • (f) Suzuki, A. In Modern Arene Chemistry; Astruc, D., Ed.; Wiley-VCH: Weinheim, 2002; pp 53-106.
    • (2002) Modern Arene Chemistry , pp. 53-106
    • Suzuki, A.1
  • 66
    • 20644436935 scopus 로고    scopus 로고
    • note
    • Dioxane, toluene, and DME were used, but the catalysts were not soluble enough to carry out the reaction.
  • 67
    • 20644471884 scopus 로고    scopus 로고
    • note
    • Various bases were tested for the Suzuki reaction of iodobenzene with phenylboronic acid and catalyst 1a, and again the best base was unambiguously NaOH. For more details, see Supporting Information.
  • 69
    • 20644446299 scopus 로고    scopus 로고
    • note
    • 2O, and NaOH (6 mmol), at 65 °C, with 1a (0.001 mol %) gave a 73% yield after 3 days.
  • 70
    • 20644447608 scopus 로고    scopus 로고
    • see ref 6
    • 1H NMR spectrum shows the signal of the catalyst (see ref 5c for details of the characterizations of the catalysts) with the presence of aromatic signals of borate salts species (see ref 6). Indeed, the mass of the precipitate is twice that of the initially loaded catalyst.
  • 71
    • 20644438275 scopus 로고    scopus 로고
    • note
    • Recycling procedure described in ref 17 was followed. In the first reaction cycle, the brown THF phase was separated, and then pentane was added. A black precipitate, insoluble in all solvents, fell out of the clear mother liquor, which confirms the formation of Pd black. No catalysis was found herewith in the second reaction cycle.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.