Cross-linked scandium containing dendrimers: A new class of heterogenous catalysts

Angewandte Chemie - International Edition

Volumn 39, Issue 14, 2000, Pages 2498-2501

  Reetz, Manfred T ^a   Giebel, Dirk ^a  

^a MAX PLANCK INSTITUT FÜR KOHLENFORSCHUNG   (Germany)

Author keywords

Dendrimers; Heterogeneous catalysis; Scandium

Indexed keywords

DENDRIMER; SCANDIUM;

ADSORPTION; ARTICLE; CATALYST; CHEMICAL ANALYSIS; CHEMICAL REACTION; CHEMICAL STRUCTURE; CROSS LINKING; POROSITY; REACTION ANALYSIS;

EID: 0034679481     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/1521-3773(20000717)39:14<2498::AID-ANIE2498>3.0.CO;2-C     Document Type: Article

References (37)

1. a) G. R. Newkome, C. N. Moorefield, F. Vögtle, Dendritic Molecules: Concepts - Syntheses - Perspectives, VCH, Weinheim, 1996;
2. b) F. J. Stoddart, T. Welton, Polyhedron 1999, 18, 3575-3591;
3. J. W. J. Knapen, A. W. van der Made, J. C. de Wilde, P. W. N. M. van Leeuwen, P. Wijkens, D. M. Grove, G. van Koten, Nature 1994, 372, 659-663;
4. M. T. Reetz, G. Lohmer, R. Schwickardi, Angew. Chem. 1997, 109, 1559-1562; Angew. Chem. Int. Ed. Engl. 1997, 36, 1526-1529;
5. M. T. Reetz, G. Lohmer, R. Schwickardi, Angew. Chem. 1997, 109, 1559-1562; Angew. Chem. Int. Ed. Engl. 1997, 36, 1526-1529;
6. e) H. Brunner, J. Organomet. Chem. 1995, 500, 39-46;
7. f) C. Bolm, N. Derrien, A. Seger, Synlett 1996, 387-388;
8. g) P. Bhyrappa, J. K. Young, J. S. Moore, K. S. Suslick, J. Am. Chem. Soc. 1996, 118, 5708-5711;
9. h) G. E. Oosterom, R. J. van Haaren, J. N. H. Reek, P. C. J. Kamer, P. W. N. M. van Leeuwen, Chem. Commun. 1999, 1119-1120;
10. J.-J. Lee, W. T. Ford, J. A. Moore, Y. Li, Macromolecules 1994, 27, 4632-4634;
11. j) N. J. Hovestad, E. B. Eggeling, H. J. Heidbuchel, J. T. B. H. Jastrzebski, U. Kragl, W. Keim, D. Vogt, G. van Koten, Angew. Chem. 1999, 111, 1763-1765; Angew. Chem. Int. Ed. 1999, 38, 1655-1658;
12. j) N. J. Hovestad, E. B. Eggeling, H. J. Heidbuchel, J. T. B. H. Jastrzebski, U. Kragl, W. Keim, D. Vogt, G. van Koten, Angew. Chem. 1999, 111, 1763-1765; Angew. Chem. Int. Ed. 1999, 38, 1655-1658;
13. k) D. de Groot, J. C. de Wilde, R. J. van Haaren, J. N. H. Reek, P. C. J. Kamer, P. W. N. M. van Leeuwen, E. B. Eggeling, D. Vogt, H. Kooijman, A. L. Spek, A. W. van der Made, Chem. Commun. 1999, 1623-1624;
14. C. Köllner, B. Pugin, A. Togni, J. Am. Chem. Soc. 1998, 120, 10274-10275;
15. L. Lüning, T. Marquardt, J. Prakt. Chem. 1999, 341, 222-227;
16. n) N. Brinkmann, D. Giebel, G. Lohmer, M. T. Reetz, U. Kragl, J. Catal. 1999, 183, 163-168;
17. o) T. Mizugaki, M. Ooe, K. Ebitani, K. Kaneda, J. Mol. Catal. A 1999, 145, 329-333;
18. p) C. Schlenk, H. Frey, Monatsh. Chem. 1999, 130, 3-14;
19. q) S. C. Bourque, F. Maltais, W.-J. Xiao, O. Tardif, H. Alper, P. Arya, L. E. Manser, J. Am. Chem. Soc. 1999, 121, 3035-3038;
20. r) C. Bolm, N. Derriem, A. Seger, Chem. Commun. 1999, 2087-2088.
21. Cross-linked dendrimers as polymers without catalytic properties: a) N. Moszner, T. Volkel, V. Rheinberger, Macromol. Chem. Phys. 1996, 197, 621-631; b) M. Trollsås, M. A. Kelly, H. Claesson, R. Siemens, J. L. Hedrick, Macromolecules 1999, 32, 4917-4924.
22. Cross-linked dendrimers as polymers without catalytic properties: a) N. Moszner, T. Volkel, V. Rheinberger, Macromol. Chem. Phys. 1996, 197, 621-631; b) M. Trollsås, M. A. Kelly, H. Claesson, R. Siemens, J. L. Hedrick, Macromolecules 1999, 32, 4917-4924.
23. Cross-linked enzymes (CLECs) as catalysts: N. S. Clair, Y.-F. Wang, A. L. Margolin, Angew. Chem. 2000, 112, 388-391; Angew. Chem. Int. Ed. 2000, 39, 380-383, and references therein.
24. Cross-linked enzymes (CLECs) as catalysts: N. S. Clair, Y.-F. Wang, A. L. Margolin, Angew. Chem. 2000, 112, 388-391; Angew. Chem. Int. Ed. 2000, 39, 380-383, and references therein.
25. 4 with formation of recyclable Ti catalysts: H. Sellner, D. Seebach, Angew. Chem. 1999, 111, 2039-2041; Angew. Chem. Int. Ed. 1999, 38, 1918-1920. Numerous related examples of the embedment of ligands in cross-linked polymers are known, for example:
26. 4 with formation of recyclable Ti catalysts: H. Sellner, D. Seebach, Angew. Chem. 1999, 111, 2039-2041; Angew. Chem. Int. Ed. 1999, 38, 1918-1920. Numerous related examples of the embedment of ligands in cross-linked polymers are known, for example:
27. b) S. J. Fritschel, J. J. H. Ackerman, T. Keyer, J. K. Stille, J. Org. Chem. 1979, 44, 3152-3157;
28. e) S. Itsuno, Y. Sakurai, K. Ito, T. Maruyama, S. Nakahama, J. M. J. Fréchet, J. Org. Chem. 1990, 55, 304-310;
29. K. Nozaki, Y. Itoi, F. Shibahara, E. Shirakawa, T. Ohta, H. Takaya, T. Hiyama, J. Am. Chem. Soc. 1998, 120, 4051-4052.
30. a) S. Kobayashi, Eur. J. Org. Chem. 1999, 15-27;
31. b) S. Kobayashi, S. Nagayama, J. Am. Chem. Soc. 1996, 118, 8977-8978;
32. S. Kobayashi, S. Nagayama, Synlett 1997, 653-654;
33. D. Longbottom, Synlett 1999, 2023.
34. Dendrimer 1 and other poly(amino) dendrimers are commercially available (Aldrich).
35. Discussion concerning the limitations of the BET method: a) B. C. Gates, Catalytic Chemistry, Wiley, New York, 1992; b) J. Seifert, G. Emig, Chem. Ing. Tech. 1987, 59, 475-484.
36. Discussion concerning the limitations of the BET method: a) B. C. Gates, Catalytic Chemistry, Wiley, New York, 1992; b) J. Seifert, G. Emig, Chem. Ing. Tech. 1987, 59, 475-484.
37. 3 serving as the precursors. Such gels are catalytically active.