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Volumn 23, Issue 17, 2004, Pages 4105-4111

Characterization and reactivity of the tetrametallic Pd2-Mo 2 complex Ph(Bu)P(η5-C5H 4)Mo(CO)3Pd(μ-I)2PdMo(CO) 3(η55-C5H4)P(Ph)Bu and its use to model Pd-catalyzed cross-coupling reactions leading to M-C≡C bonds

Author keywords

[No Author keywords available]

Indexed keywords

CATALYSIS; CHEMICAL BONDS; CHROMATOGRAPHIC ANALYSIS; COMPLEXATION; CRYSTAL ATOMIC STRUCTURE; CRYSTALS; DIFFUSION; INFORMATION ANALYSIS; INTERMETALLICS; OXIDATION; PALLADIUM COMPOUNDS; PHOSPHORUS COMPOUNDS; POLARIZATION; REACTION KINETICS; SPECTROSCOPIC ANALYSIS;

EID: 4344652937     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om0400595     Document Type: Article
Times cited : (9)

References (68)
  • 5
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    • Special Issue, 30 Years of the Cross-Coupling Reaction
    • (e) J. Organomet. Chem. 2002, 053 (issue 1-2), Special Issue, 30 Years of the Cross-Coupling Reaction.
    • (2002) J. Organomet. Chem. , vol.53 , Issue.1-2
  • 41
    • 4344602190 scopus 로고    scopus 로고
    • note
    • 8
  • 47
    • 4344608029 scopus 로고    scopus 로고
    • note
    • 3 (0.01 mL) was added to the solution to provide the lock signal. A prevalent signal at -27.2 ppm attributable to 14 is present in the spectrum.
  • 48
    • 4344627759 scopus 로고    scopus 로고
    • note
    • Complex 14 was very sensitive and its isolation was hampered by the invariable formation of the corresponding phoshinoxide derivative. Evidently the absence of the stabilizing phenyl groups on Cp and the presence of the electron-donor butyl group on phosphorus have dramatically increased the sensitivity of complex 14 with respect to the similar, more stable compounds 1 and 2.
  • 56
    • 4344691314 scopus 로고    scopus 로고
    • note
    • 31P NMR spectra of a chloroform solution of 15 containing increasing amounts of DMF, the pair of signals appearing at 46.7 and 47.2 ppm attributable to 15a and 15b, respectively, are progressively replaced by the signal at 49.8 attributable to 17.
  • 58
    • 4344632244 scopus 로고    scopus 로고
    • note
    • 7 for lock purposes.
  • 59
    • 4344573490 scopus 로고    scopus 로고
    • note
    • 4
  • 60
    • 4344627306 scopus 로고    scopus 로고
    • note
    • 4a
  • 61
    • 4344700323 scopus 로고    scopus 로고
    • note
    • 4e
  • 62
    • 4344614548 scopus 로고    scopus 로고
    • note
    • 31P NMR spectroscopy the disappearance of signals of starting material is accompanied by the formation of a species displaying a group of four doublets of doublets signals, which, upon prolonged warming, remain the only species in solution.
  • 63
    • 4344570296 scopus 로고    scopus 로고
    • note
    • To overcome reluctance of palladium to be extruded from 21, the reductive elimination process was also carried out by treating 21 (formed according to the procedure outlined in Scheme 4) in the presence of bis-1,2- diphenylphosphinoethane (dppe). However, instead of acting as scavenging agent for Pd, thus favoring formation of 22 (Scheme 5), dppe added to 21 caused the formation of 23, whose structure was assigned on the basis of spectroscopic data.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.