Tridentate cobalt catalysts for linear dimerization and isomerization of α-olefins

Organometallics

Volumn 22, Issue 16, 2003, Pages 3178-3183

  Small, Brooke L ^a  

^a CHEVRON PHILLIPS CHEMICAL COMPANY LP   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

LINEAR DIMERIZATION;

CATALYSTS; COBALT; DIMERIZATION; DIMERS; ISOMERIZATION;

OLEFINS;

EID: 0042031143     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om030210v     Document Type: Article

References (24)

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9. (a) Small, B. L.; Marcucci, A. J. Organometallics 2001, 20, 5738.
10. (b) Small, B. L.; Baralt, E. J.; Marcucci, A. J. (Chevron Phillips) U.S. Patent 6291733, 2001.
11. (a) Small, B. L.; Brookhart, M. Macromolecules 1999, 32, 2120.
12. (b) Pellecchia, C.; Mazzeo, M.; Pappalardo, D. Macromol. Rapid Commun. 1998, 19, 651.
13. Cobalt complexes containing pyrrole ligands have previously been reported for the dimerization of ethylene to high purity 1-butene: Wu, A. U.S. Pat. 5414178 (Phillips Petroleum), 1995.
14. For specific ligand syntheses, see the following references: (a) Small, B. L.; Brookhart, M. J. Am. Chem. Soc. 1998, 120, 7143.
15. (b) Alyea, E. C.; Merrell, P. H. Synth. React. Inorg. Metal-Org. Chem. 1974, 4 (6), 535.
16. For specific Co complex syntheses, see the following references: (a) Edwards, D. A.; Edwards, S. D.; Martin, W. R.; Pringle, T. J. Polyhedron 1992, 11 (13), 1569.
17. (b) Britovsek, G. J. P.; Mastroianni, S.; Solan, G. A.; Baugh, S. P. D.; Redshaw, C.; Gibson, V. C.; White, A. J. P.; Williams, D. J.; Elsegood, M. R. J. Chem. Eur. J. 2000, 6 (12), 2221.
18. For general synthetic details for preparing pyridinebisimine cobalt complexes, see, for example, the following references: (a) Small, B. L.; Brookhart, M.; Bennett, A. M. A. J. Am. Chem. Soc. 1998, 120, 4049.
19. (b) Britovsek, G. J. P.; Gibson, V. C.; Kimberley, B. S.; Maddox, P. J.; McTavish, S. J.; Solan, G. A.; White, A. J. P.; Williams, D. J. Chem. Commun. 1998, 849.
20. (c) Ittel, S. D.; Johnson, L. K.; Brookhart, M. Chem. Rev. 2000, 100, 1169.
21. (d) Britovsek, G. J. P.; Gibson, V. C.; Wass, D. F. Angew. Chem., Int. Ed. 1999, 38, 428.
22. 2O) was used, demonstrates that low Al:Co ratios can be achieved when the olefin is substantially free of moisture.
23. Bennett, A. M. A. (DuPont) U.S. Patent 6063881, 2000.
24. Complex 1 has been previously reported (ref 8a), but was prepared using ethanol instead of THF as solvent.