Formation and reactivity of cationic alkyl derivatives of titanium containing ortho-(1-naphthyl)phenoxide ligation

Abstract

A series of dimethyl compounds of Ti(IV) have been isolated containing both cyclopentadiene and ortho-arylphenoxide ligation; reaction with [B(C₆F₅)₃] generates corresponding cationic methyl species which eliminate methane and form [Cp(ArO)Ti{CH₂B(C₆F₅)₂}(C₆F₅)] derivatives.

References

1. M. Bochmann, J. Chem. Soc., Dalton Trans., 1996, 255; H. H. Brintzinger, D. Fischer, R. Mülhaupt, B. Rieger and R. M. Waymouth, Angew. Chem., Int. Ed. Engl., 1995, 34, 1143; P. C. Möhring and N. J. Coville, J. Organomet. Chem., 1994, 479, 1; W. Kaminsky, K. Kulper and H. H. Brintzinger, Angew. Chem., Int. Ed. Engl., 1985, 24, 507.
2. J. S. Vilardo, M. G. Thorn, P. E. Fanwick and I. P. Rothwell, Chem. Commun., 1998, 2425.
3. I. M. M. Fussing, D. Pletcher and R. J. Whitby, J. Organomet. Chem., 1994, 470, 109; K. Nomura, N. Naga, M. Miki, K. Yanagi and A. Imai, Organometallics, 1998, 17, 2152.
4. For related chemistry of perfluorophenoxide derivatives see S. W. Ewart, M. J. Sarsfield, D. Jeremic, T. L. Tremblay, E. F. Williams and M. C. Baird, Organometallics, 1998, 17, 1502; M. J. Sarsfield, S. W. Ewart, T. L. Tremblay, A. W. Roszak and M. C. Baird, J. Chem. Soc., Dalton Trans., 1997, 3097; T. L. Tremblay, S. W. Ewart, M. J. Sarsfield and M. C. Baird, Chem. Commun., 1997, 831.
5. For linked Cp-phenoxide derivatives see Y.-X. Chen, P.-F. Fu, C. L. Stern and T. J. Marks, Organometallics, 1997, 16, 5958.
6. U. Thewalt and T. Wohrle, J. Organomet. Chem., 1994, 464, C17.
7. P. E. Fanwick, personal communication.
8. X. Yang, C. L. Stern and T. J. Marks, J. Am. Chem. Soc., 1994, 116, 10015; J. A. Ewen and M. J. Elder, Chem. Abstr., 1991, 115, 136998g; A. G. Massey and A. J. Park, J. Organomet. Chem., 1964, 2, 245.
9. J. D. Scollard, D. H. McConville and S. J. Rettig, Organometallics, 1997, 16, 1810; R. E. von H. Spence, D. J. Parks, W. E. Piers, M.-A. MacDonald, M. J. Zaworotko and S. J. Rettig, Angew. Chem., Int. Ed. Engl., 1995, 34, 1230.