Fletcher, Nicholas C., Keene, Richard, Ziegler, Marco, Stoeckli Evans, Heather, Viebrock, Heiko, and von Zelewsky, Alex (1996) The synthesis and characterization of new optically active 'dimeric' 'pineno'- 4,5 -fused 2,2'-bipyridines linked without spacer or by small spacer groups. Helvetica Chimica Acta, 79 (4). pp. 1192-1202.

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Abstract

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.

Item ID:	22773
Item Type:	Article (Research - C1)
ISSN:	0018-019X
Keywords:	ligands; metal
Date Deposited:	09 Aug 2012 02:38
FoR Codes:	03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry @ 100%
SEO Codes:	97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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