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Volumn , Issue 27, 2008, Pages 4236-4241

Rate and mechanism of the oxidative addition of a silylborane to Pt 0 complexes - Mechanism for the Pt-catalyzed silaboration of 1,3-cyclohexadiene

Author keywords

Kinetics; Platinum; Reaction mechanisms; Silaboration

Indexed keywords

ADDITION REACTIONS; CATALYSIS; ELECTROLYTIC REDUCTION; IONS; LIGANDS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; RATE CONSTANTS; SILICON COMPOUNDS;

EID: 53549134267     PISSN: 14341948     EISSN: 10990682     Source Type: Journal    
DOI: 10.1002/ejic.200800285     Document Type: Article
Times cited : (8)

References (26)
  • 1
    • 0000185390 scopus 로고
    • a) K. A. Horn, Chem. Rev. 1995, 95, 1317-1350;
    • (1995) Chem. Rev , vol.95 , pp. 1317-1350
    • Horn, K.A.1
  • 14
    • 85153232163 scopus 로고    scopus 로고
    • 0 complexes in oxidative addition to aryl halides, see: a C. Amatore, M. Azzabi, A. Jutand, J. Am. Chem. Soc. 1991, 113, 8375-8384;
    • 0 complexes in oxidative addition to aryl halides, see: a) C. Amatore, M. Azzabi, A. Jutand, J. Am. Chem. Soc. 1991, 113, 8375-8384;
  • 22
    • 85153195232 scopus 로고    scopus 로고
    • 2Ph) of unidentified products.
    • 2Ph) of unidentified products.
  • 23
    • 85153226203 scopus 로고    scopus 로고
    • 1H NMR spectroscopy at 24 h intervals. After 6 d, a 0.54:0.62:0.35:0.62 mixture of 1/2/3/4 was obtained.
    • 1H NMR spectroscopy at 24 h intervals. After 6 d, a 0.54:0.62:0.35:0.62 mixture of 1/2/3/4 was obtained.
  • 24
    • 85153177774 scopus 로고    scopus 로고
    • After 24 h at 80 °C, no trace of complexes 2-4 was present. No product of silaboration (5) was found.
    • After 24 h at 80 °C, no trace of complexes 2-4 was present. No product of silaboration (5) was found.
  • 25
    • 85153290272 scopus 로고    scopus 로고
    • Crystallization from Et2O, benzene, DCM, or CDCl3 with hexane or pentane was attempted by direct precipitation, diffusion chamber, or diffusion in the NMR tube. Typically, a brown oil was obtained, or complex 3 was isolated in pure form. Further attempts to isolate complex 4 were also made, but met with little success: reaction conditions were optimized in terms of stoichiometries, order and time of addition, and temperature, but no increase in the yield of 4 relative to that obtained under the standard conditions was observed. Exchange of Pt(acac)2 for Pt(cod)2 or addition of 1,3-cyclohexadiene to complex 2 isolated in pure form did not lead to any increase in amount or purity of complex 4. Finally, attempts to react 4 with sodium dimethyl malonate (A. J. Blacker, M. L. Clarke, M. S. Loft, M. F. Mahon, M. E. Humphries, J. M. J. Williams, Chem. Eur. J. 2000, 6, 353-360) met with n
    • 2 or addition of 1,3-cyclohexadiene to complex 2 isolated in pure form did not lead to any increase in amount or purity of complex 4. Finally, attempts to react 4 with sodium dimethyl malonate (A. J. Blacker, M. L. Clarke, M. S. Loft, M. F. Mahon, M. E. Humphries, J. M. J. Williams, Chem. Eur. J. 2000, 6, 353-360) met with no success - heating at 60 ° C overnight only led to decomposition.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.