3,3′-oxazolidinyl-substituted 2,2′-biphenyldiols: Novel tropos ligands with a large induction on the chiral axis

Organic Letters

Volumn 8, Issue 12, 2006, Pages 2455-2458

  Wünnemann, Stefan ^a   Fröhlich, Roland ^a   Hoppe, Dieter ^a  

^a UNIVERSITY OF MÜNSTER   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 33745575000     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol060528u     Document Type: Article

References (21)

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17. CD-spectroscopic and quantum chemical investigations on a related compound support this assumption; in cooperation with C. Diedrich and S. Grimme. To be published.
18. In our work using chiral N-arenesulfonyl-1,3-oxazolidines as chiral auxiliaries, nor-pseudoephedrine derivatives often provided superior selectivity; see, for example: Brüggemann, M.; Fröhlich, R.; Wibbeling, B.; Holst, C.; Hoppe, D. Tetrahedron 2002, 58, 321.
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20. (b) Krause, N.; Hoffmann-Röder, A. Synthesis 2001, 171.
21. The absolute configuration of 12 was determined by derivatization: Alexakis, A.; Frutos, J. C.; Mangeney, P. Tetrahedron: Asymmetry 1993, 4, 2431.