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Volumn 79, Issue C, 2009, Pages 531-548

Synthesis, structure and catalytic activity of macrocyclic NHC PD pincer complexes

Author keywords

Chirality; Macrocycle; N Heterocyclic Carbene; Palladium Catalyst; Palladium Complex

Indexed keywords


EID: 67749088330     PISSN: 03855414     EISSN: None     Source Type: Journal    
DOI: 10.3987/COM-08-S(D)13     Document Type: Article
Times cited : (14)

References (56)
  • 37
    • 33846869728 scopus 로고    scopus 로고
    • Reviews for the bis- and tris-NHC carbene complexes
    • Reviews for the bis- and tris-NHC carbene complexes. Pugh D., and Danopoulos A.A. Coord. Chem. Rev. 251 (2007) 610
    • (2007) Coord. Chem. Rev. , vol.251 , pp. 610
    • Pugh, D.1    Danopoulos, A.A.2
  • 45
    • 4444382495 scopus 로고    scopus 로고
    • The strong interaction between imidazole and imidazole cation was examined theoretically. See
    • The strong interaction between imidazole and imidazole cation was examined theoretically. See. Yan S., Bu Y., Cao Z., and Li P. J. Phys. Chem. A 108 (2004) 7038
    • (2004) J. Phys. Chem. A , vol.108 , pp. 7038
    • Yan, S.1    Bu, Y.2    Cao, Z.3    Li, P.4
  • 46
    • 67749092121 scopus 로고    scopus 로고
    • note
    • 2) where kc is the rate constant at the coalescence point, Av is the difference in chemical shifts (in Hz), and J is coupling constant. The signals of the benzylic protons (signals of the methylene protons located between the NHC group and the phenyl group) appeared as coupled AB signals at low temperature, and they were analyzed to calculate the parameters.
  • 48
    • 67749126846 scopus 로고    scopus 로고
    • note
    • The decomposition of the Pd complexes to colloidal Pd might have occured at the elevated temparature (120 °C), since the color of the reaction mixure turned brown. The decomposition of the Pd catalyst seems to be suppressed at 80 °C (entries 5-6).
  • 49
    • 67749092531 scopus 로고    scopus 로고
    • note
    • Though we examined the reaction of some aryl bromides, the reactions proceeded very slowly, indicating the lower catalytic activity of the macrocyclic Pd complexes compared to the acyclic analogues. See, ref. 12a.
  • 54
    • 67749123610 scopus 로고    scopus 로고
    • note
    • Unless the Pd-C bond is cleaved, it is necessary to postulate a less stable Pd(III) complex as an intermediate.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.