Selective synthesis of 1-stanna-2-boraferrocenes: novel bidentate Lewis acids via an unexpected rearrangement reaction

Abstract

Ferrocene based bidentate Lewis acids of the general formula 1,2-fc(BR₂)(SnR₃) are obtained in one step from 1,1′-distannaferrocenes and chloroboranes via an unexpected rearrangement reaction.

References

1. M. M. G. Antonisse and D. N. Reinhoudt, Chem. Commun., 1998, 443.
2. F. P. Gabbaï, A. Schier and J. Riede, Angew. Chem., Int. Ed., 1998, 37, 622.
3. T. Ooi, T. Miura and K. Maruoka, Angew. Chem., Int. Ed., 1998, 37, 2347.
4. K. Köhler, W. E. Piers, A. P. Jarvis, S. Xin, Y. Feng, A. M. Bravakis, S. Collins, W. Clegg, G. P. A. Yap and T. B. Marder, Organometallics, 1998, 17, 3557.
5. H. E. Katz, J. Am. Chem. Soc., 1986, 108, 7640.
6. B. Wrackmeyer, U. Dörfler, W. Milius and M. Herberhold, Z. Naturforsch., Teil B, 1996, 51, 851.
7. J. J. Eisch and B. W. Kotowicz, Eur. J. Inorg. Chem., 1998, 761.
8. H. Braunschweig, R. Dirk, M. Müller, P. Nguyen, R. Resendes, D. P. Gates and I. Manners, Angew. Chem., Int. Ed. Engl., 1997, 36, 2338.
9. F. Jäkle, R. Rulkens, G. Zech, D. A. Foucher, A. J. Lough and I. Manners, Chem. Eur. J., 1998, 4, 2117.
10. Z. Dawoodi, C. Eaborn and A. Pidcock, J. Organomet. Chem., 1979, 170, 95; purity of 1,1′-(fcSnMe₃)₂ > 95% by ¹H NMR spectroscopy.
11. A. Appel, F. Jäkle, T. Priermeier, R. Schmid and M. Wagner, Organometallics, 1996, 15, 1188.
12. T. Renk, W. Ruf and W. Siebert, J. Organomet. Chem., 1976, 120, 1.
13. G. Wagner and R. Herrmann, in Ferrocenes, ed. A. Togni and T. Hayashi, VCH, Weinheim, New York, Basel, Cambridge, Tokyo, 1995, p. 173.