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e) for a recent review on catalyzed asymmetric arylations, see C. Bolm, J. P. Hildebrand, K. Muñiz, N. Hermanns, Angew. Chem. 2001. 113, 3382; Angew. Chem. Int. Ed. 2001, 40, 3284.
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For other recent examples for the enantioselective addition of diethylzinc to imines, see a) H. Fujihara, K. Nagai, K. Tomioka, J. Am. Chem. Soc. 2000, 122, 12055; b) J. R. Porter, J. F. Traverse, A. H. Hoveyda, M. L. Snapper, J. Am. Chem. Soc. 2001, 123, 984; c) J. R. Porter, J. F. Traverse, A. H. Hoveyda, M. L. Snapper, J. Am. Chem. Soc. 2001, 123, 10409.
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The [2.2]paracyclophane-based N,O-ligands have previously been employed in the dialkylzinc and the alkenylzinc addition to aldehydes: a) S. Dahmen, S. Bräse, Chem. Commun. 2002, 26; b) S. Dahmen, S. Bräse, Org. Lett. 2001, 3, 4119; c) for the synthesis of compounds 4 and 6, see V. Rozenberg, T. Danilova, E. Sergeeva, E. Vorontsov, Z. Starikova, K. Lysenko, Y. Belokon, Eur. J. Org. Chem. 2000, 3295.
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The [2.2]paracyclophane-based N,O-ligands have previously been employed in the dialkylzinc and the alkenylzinc addition to aldehydes: a) S. Dahmen, S. Bräse, Chem. Commun. 2002, 26; b) S. Dahmen, S. Bräse, Org. Lett. 2001, 3, 4119; c) for the synthesis of compounds 4 and 6, see V. Rozenberg, T. Danilova, E. Sergeeva, E. Vorontsov, Z. Starikova, K. Lysenko, Y. Belokon, Eur. J. Org. Chem. 2000, 3295.
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The [2.2]paracyclophane-based N,O-ligands have previously been employed in the dialkylzinc and the alkenylzinc addition to aldehydes: a) S. Dahmen, S. Bräse, Chem. Commun. 2002, 26; b) S. Dahmen, S. Bräse, Org. Lett. 2001, 3, 4119; c) for the synthesis of compounds 4 and 6, see V. Rozenberg, T. Danilova, E. Sergeeva, E. Vorontsov, Z. Starikova, K. Lysenko, Y. Belokon, Eur. J. Org. Chem. 2000, 3295.
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D = +10.8 (c = 2.18, ethanol), see G. R. Clemo, C. Gardner, R. Raper, J. Chem. Soc. 1939, 1958.
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2142840672
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note
-
The absolute configurations of all other products should be R as well if an analogous stereochemical reaction pathway is assumed.
-
-
-
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40
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2142684153
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-
note
-
Attempts to determine the enantiomeric excess of amine 10b itself by means of HPLC on a chiral stationary phase were unsuccessful.
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