Practical Synthesis of Rac-Ethylenebis(η5-indenyl)zirconium Dichloride

Synlett

Volumn 1996, Issue 2, 1996, Pages 147-148

  Yang, Qing ^a   Jensen, Michael D ^a  

^a UNIVERSITY OF NORTH DAKOTA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0002624559     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-1996-5352     Document Type: Article

References (22)

1. Chemical and Engineering News 1995, May 1, pp.7.
2. Kaminsky, W.; Kulper, K.; Brintzinger, H. H.; Wild, F. R. W. P. Angew. Chem. Int. Ed. Engl. 1985, 24, 507.
3. Pino, P.; Cioni, P.; Wei, J. J. Am. Chem. Soc. 1987, 109, 6189.
4. Coates, G. W.; Waymouth, R. M. J. Am. Chem. Soc. 1993, 115, 91.
5. Jaquith, J. B.; Guan, J.; Wang, S.; Collins, S. Organometallics 1995, 14, 1079.
6. (a) Grossman, R. B.; Davis, W. M.; Buchwald, S. L. J. Am. Chem. Soc. 1991, 113, 2321.
7. (b) Willoughby, C. A.; Buchwald, S. L. J. Am. Chem. Soc. 1992, 114, 7562.
8. (c) Willoughby, C. A.; Buchwald, S. L J. Org. Chem. 1993, 58, 7627.
9. Broene, R. D.; Buchwald S. L. J. Am. Chem. Soc. 1993, 115, 12569.
10. Collins, S; Kuntz, B. A.; Hong, Y. J. Org. Chem. 1989, 54, 4154.
11. Morken, J. P.; Didiuk, M. T.; Visser, M. S.; Hoveyda, A. H. J. Am. Chem. Soc. 1994, 116, 3123.
12. (a) Wild, F. R. W. P.; Wasiucionek, M.; Huttner, G.; Brintzinger, H. H. J. Organomet. Chem. 1985, 288, 63.
13. (b) Wild, F. R. W. P.; Zsolnai, S.; Huttner, G.; Brintzinger, H. H. J. Organomet. Chem. 1985, 232, 233.
14. (c) Collins, S.; Kuntz, B. A.; Taylor, N. J.; Ward, D. G. J. Organomet. Chem. 1988, 342, 21.
15. (d) Grossman, R. B.; Doyle, R. A.; Buchwald, S. L. Organometallics 1991, 10, 1501.
16. (e) Lee, I.; Gauthier, W. J.; Ball, J. M.; Iyengar, B.; Collins, S. Organometallics 1992, 11, 2115.
17. Piemontesi, F.; Camurati, I.; Resconi, L.; Balboni, D.; Sironi, A.; Moret, M.; Ziegler, R.; Piccolrovazzi, N. Organometallics 1995, 14, 1256.
18. 4.
19. Piemontosi (see reference 11) has recently reported an aprotic workup using soxhlet extraction which yields 40% of the title compound.
20. From this modified procedure, like that of Collins', only the rac isomer is obtained.
21. Previous reports add 1,2-dibromoethane to indenyllithium.
22. 4, which is commercially available, as starting material.