Facile axial chirality control by using a precursor with central chirality. Application to the preparation of new axially chiral diphosphine complexes for asymmetric catalysis

Chemical Communications

Volumn , Issue 21, 2002, Pages 2546-2547

  Lotz, Matthias ^a   Kramer, Gernot ^a   Knochel, Paul ^a  

^a UNIVERSITY OF MUNICH   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

4 TOLYLFERROCENYL SULFOXIDE; LIGAND; PALLADIUM; PHOSPHINE DERIVATIVE; SULFOXIDE; UNCLASSIFIED DRUG;

ARTICLE; CATALYSIS; CHIRALITY; COMPLEX FORMATION; ENANTIOSELECTIVITY; SUBSTITUTION REACTION;

EID: 0036977479     PISSN: 13597345     EISSN: None     Source Type: Journal    
DOI: 10.1039/b207399d     Document Type: Article

References (17)

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11. -3, max. shift/error: 0.002, programs used: 'SIR97 (Cascarano et al., Acta Crystallogr., Sect A, 1996, C79', 'SHELXL-97 G M Sheldrick University of Gottingen 97-2 version' ORTEP M N Burnett C K Johnson ORTEP-III Oak Ridge Thermal Ellipsoid Plot Program for Crystal Structure Illustrations Oak Ridge National Laboratory Report ORNL-6895 1996 CCDC 190672 See http//wwwrscorg/suppdata/cc/b2/b207399d/ for crystallographic data in CIF or other electronic format
12. The new ligand 1 was patented in collaboration with Degussa AG: M. Lotz, P. Knochel, A. Monsees, T. Riermeier, R. Kadyrov and J. Almena, Ger. Pat. No. DE 10211250.
13. G. Helmchen and A. Pfaltz, Acc. Chem. Res., 2000, 33, 336; B. M. Trost, Chem. Pharm. Bull., 2002, 50, 1.
14. G. Helmchen and A. Pfaltz, Acc. Chem. Res., 2000, 33, 336; B. M. Trost, Chem. Pharm. Bull., 2002, 50, 1.
15. G. J. Dawson, J. M. J. Williams and S. J. Coote, Tetrahedron: Asymmetry, 1995, 6, 2535.
16. 2O 50:1) affording 1 (260 mg, 0.41 mmol, 81%) as a yellow solid (mp = 187°C).
17. 2O 2:1) affording 12a (181 mg, 0.50 mmol, 78%, 97% ee) as a white solid.