Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 26/06/1996 |
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<mark>Journal</mark> | Helvetica Chimica Acta |
Issue number | 4 |
Volume | 79 |
Number of pages | 11 |
Pages (from-to) | 1192-1202 |
Publication Status | Published |
<mark>Original language</mark> | English |
Linked chiral bipyridines 2-4 are prepared by combining two optically active 'pineno'-[4,5]-fused 2,2′-bipyridines in a stereoselective reaction (Scheme 1). These potential ligands are new members of the 'chiragen' family, and are characterized by NMR spectroscopy and, in the case of 2 and 3 by single-crystal X-ray analysis. A new synthesis of 'dipineno'-[4,5;4′,5′]-fused 2,2′-bipyridine 8 is described, which, when coupled, gives additional four chiral centres to the analogous 'chiragen' series (→9). Analysis of the CD spectra allowed conformational information about the solution species to be determined.