The X-ray crystal structure of 1,3-diphenylallyllithium, complexed with enantiomerically pure (-)-sparteine, was determined. The crystallized complex is stereohomogeneous. Its subsequent electrophilic substitution reactions proceed with low enantioselectivity.
Synthesis and X-ray crystal structure of 〚VCl3((–)-sparteine)〛 and 〚FeCl2((–)-sparteine)〛
✍ Scribed by Christian Lorber; Robert Choukroun; Jean-Pierre Costes; Bruno Donnadieu
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 183 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1631-0748
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✦ Synopsis
Novel complexes of vanadium(III), chromium(III) and iron(II) containing the alkaloid (-)-sparteine as a bidentate ligand have been prepared. Two of them, [VCl 3 ((-)-sparteine)] and [FeCl 2 ((-)-sparteine)], were characterised by X-ray diffraction. Known cobalt(III) and nickel(II) analogue complexes were prepared using the same procedure. To cite this article: C. Lorber et al., C. R. Chimie 5 (2002) 251-255 © 2001 Académie des sciences / Éditions scientifiques et médicales Elsevier SAS (-)-sparteine / vanadium / chromium / iron Résumé -Synthèse et structure moléculaire de [VCl 3 ((-)-spartéine)] et de [FeCl 2 ((-)-spartéine)]. Les nouveaux complexes du vanadium(III), du chrome(III) et du fer(II) comportant l'alkaloïde (-)-spartéine en tant que ligand bidenté ont été préparés. Les composés [VCl 3 ((-)-spartéine)] et [FeCl 2 ((-)-spartéine)] ont été caractérisés par diffraction des rayons X. Les complexes analogues du cobalt(II) et du nickel(II), déjà connus, ont été préparés selon la même méthode.
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