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Volumn 350, Issue 16, 2008, Pages 2583-2598

Palladium nanoparticles in allylic alkylations and heck reactions: The molecular nature of the catalyst studied in a membrane reactor

Author keywords

Active species; Asymmetric catalysis; C C coupling; Nanocatalysts; Structure elucidation

Indexed keywords


EID: 56649103851     PISSN: 16154150     EISSN: 15213897     Source Type: Journal    
DOI: 10.1002/adsc.200800424     Document Type: Article
Times cited : (53)

References (109)
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    • The use of reactivity patterns is hampered due to the difficulty to find a reaction that only works with heteregeneous catalysts or viceversa (see ref.[6h, For recent examples, see: a) J. A. Widegren, R. G. Finke, J. Mol. Catal. A: Chem. 2003, 191, 187;
    • [6h]). For recent examples, see: a) J. A. Widegren, R. G. Finke, J. Mol. Catal. A: Chem. 2003, 191, 187;
  • 45
    • 56649093925 scopus 로고    scopus 로고
    • Several complexes that may be involved have a molecular mass slightly above 700, but this does not seem to influence the results
    • Several complexes that may be involved have a molecular mass slightly above 700, but this does not seem to influence the results.
  • 57
    • 0042836770 scopus 로고
    • Eds, K. I. Thomas, K. I. Zamaraev, Blackwell, Oxford
    • c) I. I. Moiseev, M. N. Vargaftik, in: Perspectives in Catalysis, (Eds.: K. I. Thomas, K. I. Zamaraev), Blackwell, Oxford, 1992, pp91-123;
    • (1992) Perspectives in Catalysis , pp. 91-123
    • Moiseev, I.I.1    Vargaftik, M.N.2
  • 59
    • 85022571014 scopus 로고    scopus 로고
    • Schmid and co-workers have found that usually the ideal icosahedron arrangement is distorted and forms a cubooctahedron geometry. See for instance: a G. Schmid, M. Harms, J.-O. Malm, J.-O. Bovin, J. van Ruitenbeck, H. W. Zandbergen, W. T. Fu, J. Am. Chem. Soc. 1993, 115, 2046;
    • Schmid and co-workers have found that usually the ideal icosahedron arrangement is distorted and forms a cubooctahedron geometry. See for instance: a) G. Schmid, M. Harms, J.-O. Malm, J.-O. Bovin, J. van Ruitenbeck, H. W. Zandbergen, W. T. Fu, J. Am. Chem. Soc. 1993, 115, 2046;
  • 61
    • 56649084658 scopus 로고    scopus 로고
    • ref.[1a
    • [1a]
  • 64
    • 56649086216 scopus 로고    scopus 로고
    • This is meant as a rough calculation; also, the clusters are different in nature, as the Moiseev cluster is charged and the present ones contain Pd0
    • This is meant as a rough calculation; also, the clusters are different in nature, as the Moiseev cluster is charged and the present ones contain Pd(0).
  • 65
    • 0003441482 scopus 로고
    • Palladium Reagents and Catalysis
    • For recent reviews on Pd-catalyzed allylic substitution, see: a, Wiley, New York
    • For recent reviews on Pd-catalyzed allylic substitution, see: a) J. Tsuji, Palladium Reagents and Catalysis, in: Innovations in Organic Synthesis, Wiley, New York, 1995;
    • (1995) Innovations in Organic Synthesis
    • Tsuji, J.1
  • 68
    • 0000687774 scopus 로고    scopus 로고
    • Eds, E. N. Jacobsen, A. Pfaltz, H. Yamamoto, Springer-Verlag, Berlin, Chapter 24;
    • d) A. Pfaltz, M. Lautens, in: Comprehensive Asymmetric Catalysis, (Eds.: E. N. Jacobsen, A. Pfaltz, H. Yamamoto), Springer-Verlag, Berlin, 1999, Vol. 2, Chapter 24;
    • (1999) Comprehensive Asymmetric Catalysis , vol.2
    • Pfaltz, A.1    Lautens, M.2
  • 70
    • 4043123499 scopus 로고    scopus 로고
    • for recent reviews on Pd-catalyzed Heck reactions, see: f L. F. Tietze, H. Ila, H. P. Bell, Chem. Rev. 2004, 104, 3453;
    • for recent reviews on Pd-catalyzed Heck reactions, see: f) L. F. Tietze, H. Ila, H. P. Bell, Chem. Rev. 2004, 104, 3453;
  • 73
  • 77
    • 56649098421 scopus 로고    scopus 로고
    • The recycling was done adding in every run 10 mol% of ligand
    • The recycling was done adding in every run 10 mol% of ligand.
  • 78
    • 56649120063 scopus 로고    scopus 로고
    • [4a] Therefore, the final catalytic suspension was cooled down to -70°C to favour the separation of the nanoparticles from the solution. Then, the resulting solution was removed. The remaining solid was washed with dichloromethane under argon and subsequently used as catalyst precursor.
    • [4a] Therefore, the final catalytic suspension was cooled down to -70°C to favour the separation of the nanoparticles from the solution. Then, the resulting solution was removed. The remaining solid was washed with dichloromethane under argon and subsequently used as catalyst precursor.
  • 79
    • 56649093922 scopus 로고    scopus 로고
    • For recovered Pd1 we found 42.59% of Pd and 2.11% of P. For recovered Pd5 we found 46.45% of Pd and 1.81% of P.
    • For recovered Pd1 we found 42.59% of Pd and 2.11% of P. For recovered Pd5 we found 46.45% of Pd and 1.81% of P.
  • 80
    • 56649112431 scopus 로고    scopus 로고
    • PhD Thesis, Universitat Rovira i Virgili
    • Y. Mata, PhD Thesis, Universitat Rovira i Virgili, 2007.
    • (2007)
    • Mata, Y.1
  • 81
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    • + is not observed.
    • + is not observed.
  • 103
    • 19544381937 scopus 로고    scopus 로고
    • Wilmington, USA
    • a) Koch Membrane Systems, Wilmington, USA, http://www.kochmembrane.com;
    • Koch Membrane Systems
  • 105
    • 0034520340 scopus 로고    scopus 로고
    • This set-up has previously given good results with dendritic ligands in transition metal catalysed reactions. See, for instance ref.[9a] and: a D. de Groot, P. G. Emmerink, C. Coucke, J. N. H. Reek, P. C. J. Kamer, P. W. N. M. van Leeuwen, Inorg. Chem. Commun. 2000, 3, 711;
    • [9a] and: a) D. de Groot, P. G. Emmerink, C. Coucke, J. N. H. Reek, P. C. J. Kamer, P. W. N. M. van Leeuwen, Inorg. Chem. Commun. 2000, 3, 711;


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.