Photochemical isomerization of Me2Si-bridged zirconocene complexes. Application to stereoselective syntheses of ansa-zirconocene binaphtholate stereoisomers

Organometallics

Volumn 16, Issue 8, 1997, Pages 1724-1728

  Schmidt, Katrin ^a   Reinmuth, Annette ^a   Rief, Ursula ^a   Diebold, Josef ^a   Brintzinger, Hans H ^a  

^a UNIVERSITY OF KONSTANZ   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000816506     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om961089d     Document Type: Article

References (41)

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28. In contrast to ethanediyl-bridged complexes, tetramethyl-ethanediyl-bridged titanocene and zirconocene complexes are photostable, (a) Burger, P. Dissertation, University of Konstanz, 1991. (b) Reference 5b.
29. In contrast to ethanediyl-bridged complexes, tetramethyl-ethanediyl-bridged titanocene and zirconocene complexes are photostable, (a) Burger, P. Dissertation, University of Konstanz, 1991. (b) Reference 5b.
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33. Collins, S.; Hong, Y.; Taylor, N. J. Organometallics 1990, 9, 2695. Collins, S.; Hong, Y.; Ramachandran, R.; Taylor, N. J. Organometallics 1991, 10, 2349.
34. Burger, P.; Hortmann, K.; Diebold, J.; Brintzinger, H. H. J. Organomet. Chem. 1991, 417, 9.
35. Previous mechanistic studies: (a) Harrigan, R. W.; Hammond, G. S.; Gray, H. B. J. Organomet. Chem. 1974, 81, 79. (b) Tsai, Z. T.; Brubaker, C. H. J. Organomet. Chem. 1979, 166, 199. (c) Rheingold, A. L.; Robinson, N. P.; Whelan, J.; Bosnich, B. Organometallics 1992, 11, 1869.
36. Previous mechanistic studies: (a) Harrigan, R. W.; Hammond, G. S.; Gray, H. B. J. Organomet. Chem. 1974, 81, 79. (b) Tsai, Z. T.; Brubaker, C. H. J. Organomet. Chem. 1979, 166, 199. (c) Rheingold, A. L.; Robinson, N. P.; Whelan, J.; Bosnich, B. Organometallics 1992, 11, 1869.
37. Previous mechanistic studies: (a) Harrigan, R. W.; Hammond, G. S.; Gray, H. B. J. Organomet. Chem. 1974, 81, 79. (b) Tsai, Z. T.; Brubaker, C. H. J. Organomet. Chem. 1979, 166, 199. (c) Rheingold, A. L.; Robinson, N. P.; Whelan, J.; Bosnich, B. Organometallics 1992, 11, 1869.
38. 2 and racemic or enantiomerically pure 1,1′-bi-2-naphthol in THF solution, Kuntz and Collins obtained the respective binaphtholate complexes in low yields only. Kuntz, R. A. Ph.D. Thesis, University of Waterloo, 1991.
39. 5b
40. Schäfer, A.; Eberhard, K.; Zsolnai, L.; Huttner, G.; Brintzinger, H. H. J. Organomet. Chem. 1987, 328, 87.
41. Assignments are based on DEPT, COSY, ROESY, HMQC, and HMBC spectra. Labels of the binaphtholate carbons in complexes 2-BIN and 4-BIN are analogous to those of complex 2-BIN in Figure 2.