View PDF Version
 
DOI: 10.1039/A908313H (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 4287-4288

C2-symmetric bis(oxazolinato) complexes of yttrium and lanthanum[hair space]†[hair space]‡

(Note: The full text of this document is currently only available in the PDF Version )

Hans W. Görlitzer, Michael Spiegler and Reiner Anwander

Abstract

Chiral 2,2′-methylene-bis[(4S[hair space])-4-tert-butyl-2-oxazoline] reacts with Ln[N(SiHMe2)2]3(thf[hair space])2 (Ln = Y, La) via an extended silylamide route to yield the first mono- and bis-(bisoxazolinato) complexes, potentially relevant to enantioselective catalysis.

References

  1. (a) A. Pfaltz, Acc. Chem. Res., 1993, 26, 339 CrossRef CAS; (b) A. Togni and L. M. Venanzi, Angew. Chem., 1994, 106, 517 CAS; Angew. Chem., Int. Ed. Engl., 1994, 33, 497 Search PubMed.
  2. (a) C. Bolm, Angew. Chem., 1991, 103, 556 CAS; Angew. Chem., Int. Ed. Engl., 1991, 33, 542 Search PubMed; (b) D. J. Ager, I. Prakash and D. R. Schaad, Chem. Rev., 1996, 96, 835 CrossRef CAS; (c) A. K. Ghosh, P. Mathivanan and J. Cappiello, Tetrahedron: Asymmetry, 1998, 9, 1 CrossRef CAS.
  3. V. Schulze and R. W. Homann, Chem. Eur. J., 1999, 5, 337 CrossRef CAS.
  4. M. Bandini, P. G. Cozzi, L. Negro and A. Umani-Ronchi, Chem. Commun., 1999, 39 RSC.
  5. (a) M. Nakamura, A. Hirai, M. Sogi and E. Nakamura, J. Am. Chem. Soc., 1998, 120, 546 and references therein; (b) R. P. Singh, Bull. Soc. Chim. Fr., 1997, 134, 765 CAS.
  6. (a) R. E. Lowenthal, A. Abiko and S. Masamune, Tetrahedron Let., 1990, 31, 6005 CrossRef CAS; (b) J. Hall, J.-M. Lehn, A. DeCian and J. Fischer, Helv. Chim. Acta, 1991, 74, 1 CrossRef CAS; (c) D. Müller, G. Umbricht, B. Weber and A. Pfaltz, Helv. Chim. Acta, 1991, 74, 232 CrossRef; (d) R. Schumacher, F. Dammast and H.-U. Reiβig, Chem. Eur. J., 1997, 3, 614 CAS.
  7. J. M. Brown, P. J. Guiry, D. W. Price, M. B. Hursthouse and K. Karalulov, Tetrahedron: Asymmetry, 1994, 5, 561 CrossRef CAS.
  8. R. Anwander, Top. Organomet. Chem., 1999, 2, 1 Search PubMed.
  9. For recent examples, see: (a) R. Duchateau, C. T. van Wee, A. Meetsma and J. H. Teuben, J. Am. Chem. Soc., 1993, 115, 4931 CrossRef CAS; (b) M. R. Bürgstein, H. Berberich and P. W. Roesky, Organo-metallics, 1998, 17, 1452 Search PubMed; (c) T. I. Gountchev and T. D. Tilley, Organometallics, 1999, 18, 2896 CrossRef CAS; (d) L. W. M. Lee, W. E. Piers, M. R. J. Elsegood, W. Glegg and M. Parvez, Organometallics, 1999, 18, 2947 CrossRef CAS.
  10. P. K. Jadhav and H.-W. Man, J. Am. Chem. Soc., 1997, 119, 846 CrossRef CAS.
  11. R. Anwander, O. Runte, J. Eppinger, G. Gerstberger, E. Herdtweck and M. Spiegler, J. Chem. Soc., Dalton Trans., 1998, 847 RSC.
  12. W. A. Herrmann, J. Eppinger, M. Spiegler, O. Runte and R. Anwander, Organometallics, 1997, 16, 1813 CrossRef CAS.
  13. W. A. Herrmann, F. C. Munck, G. R. J. Artus, O. Runte and R. Anwander, Organometallics, 1997, 16, 682 CrossRef CAS.
  14. C. S. Erasmus and J. C. A. Boeyens, Acta Crystallogr., Sect. B, 1970, 26, 1843 CrossRef CAS; J. P. R. de Villiers and J. C. A. Boeyens, Acta Crystallogr., Sect. B, 1972, 28, 2335.
  15. A. L. Spek, Acta Crystallogr., Sect. A, 1990, 46, C34.
Click here to see how this site uses Cookies. View our privacy policy here.