A new set of structurally related enantiopure polypyrazolyl ligands of varying rotational symmetry: Synthesis, metal complexation, and comparison of asymmetric induction

Organometallics

Volumn 17, Issue 10, 1998, Pages 1984-1992

  Keyes, Michael C ^a   Chamberlain, Bradley M ^a   Caltagirone, Scott A ^a   Halfen, Jason A ^a   Tolman, William B ^a  

^a University of Minnesota   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000766087     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om9801047     Document Type: Article

References (64)

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4. Selected references: (a) Pfaltz, A. Acc. Chem. Res. 1993, 26, 339-345. (b) Pfaltz, A. In Modern Synthetic Methods; Scheffold, R., Ed.; Springer-Verlag: Berlin, 1989; Vol. 5, pp 198-248. (c) Doyle, M. P. In Catalytic Asymmetric Synthesis; Ojima, I., Ed.; VCH: New York, 1993; pp 63-99. (d) Evans, D. A.; Woerpel, K. A.; Hinman, M. M.; Faul, M. M. J. Am. Chem. Soc. 1991, 113, 726-728. (e) Park, S.-B.; Murata, K.; Matsumoto, K.; Nishiyama, H. Tetrahedron 1995, 6, 2487-2494. (f) Nishiyama, H.; Itoh, Y.; Sugawara, Y.; Matsumoto, H.; Aoki, K.; Itoh, K. Bull. Chem. Soc. Jpn. 1995, 68, 1247-1262.
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41. 2, which was found in a preliminary X-ray crystal structure (marred by disorder problems) to be analogous to several other published dimers of achiral Tp and bis(pyrazolyl)dihydroborate ligands that have two-coordinate Cu(I) ions in a linear geometry bridged by two bidentate chelates. See ref 12 and (a) Carrier, S. M.; Ruggiero, C. E.; Houser, R. P.; Tolman, W. B. Inorg. Chem. 1993, 32, 4889-4899. (b) Houser, R. P. Ph.D. Thesis, University of Minnesota, Minneapolis, MN, 1996. (c) Yoon, K.; Parkin, G. Polyhedron 1995, 14, 811-821. (d) Kiani, S.; Long, J. R.; Stavropoulos, P. Inorg. Chim. Acta 1997, 263, 357-366.
42. 2, which was found in a preliminary X-ray crystal structure (marred by disorder problems) to be analogous to several other published dimers of achiral Tp and bis(pyrazolyl)dihydroborate ligands that have two-coordinate Cu(I) ions in a linear geometry bridged by two bidentate chelates. See ref 12 and (a) Carrier, S. M.; Ruggiero, C. E.; Houser, R. P.; Tolman, W. B. Inorg. Chem. 1993, 32, 4889-4899. (b) Houser, R. P. Ph.D. Thesis, University of Minnesota, Minneapolis, MN, 1996. (c) Yoon, K.; Parkin, G. Polyhedron 1995, 14, 811-821. (d) Kiani, S.; Long, J. R.; Stavropoulos, P. Inorg. Chim. Acta 1997, 263, 357-366.
43. 2, which was found in a preliminary X-ray crystal structure (marred by disorder problems) to be analogous to several other published dimers of achiral Tp and bis(pyrazolyl)dihydroborate ligands that have two-coordinate Cu(I) ions in a linear geometry bridged by two bidentate chelates. See ref 12 and (a) Carrier, S. M.; Ruggiero, C. E.; Houser, R. P.; Tolman, W. B. Inorg. Chem. 1993, 32, 4889-4899. (b) Houser, R. P. Ph.D. Thesis, University of Minnesota, Minneapolis, MN, 1996. (c) Yoon, K.; Parkin, G. Polyhedron 1995, 14, 811-821. (d) Kiani, S.; Long, J. R.; Stavropoulos, P. Inorg. Chim. Acta 1997, 263, 357-366.
44. 2, which was found in a preliminary X-ray crystal structure (marred by disorder problems) to be analogous to several other published dimers of achiral Tp and bis(pyrazolyl)dihydroborate ligands that have two-coordinate Cu(I) ions in a linear geometry bridged by two bidentate chelates. See ref 12 and (a) Carrier, S. M.; Ruggiero, C. E.; Houser, R. P.; Tolman, W. B. Inorg. Chem. 1993, 32, 4889-4899. (b) Houser, R. P. Ph.D. Thesis, University of Minnesota, Minneapolis, MN, 1996. (c) Yoon, K.; Parkin, G. Polyhedron 1995, 14, 811-821. (d) Kiani, S.; Long, J. R.; Stavropoulos, P. Inorg. Chim. Acta 1997, 263, 357-366.
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53. + in which a pyrazolyl arm dangles free. (a) Kettler, P. B.; Tokar, C. J.; Tolman, W. B. Unpublished results. (b) Tokar, C. J.; Kettler, P. B.; Tolman, W. B. Organometallics 1992, 11, 2738-2739.
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