A new class of bis-oxazoline ligands for the Cu-catalysed asymmetric cyclopropanation of olefins
β Scribed by Ashutosh V. Bedekar; Pher G. Andersson
- Book ID
- 103406027
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 197 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
The diastereo-and enantioselective cyclopropanation of furans was achieved in up to 91% ee using a new set of chiral bis(oxazoline) ligands that are able to use secondary binding sites to enhance selectivity. In contrast, with substrates such as styrene and N-Boc-pyrrole, with which no secondary int
Chiral biferrocene-based bis(oxa~aline) compounds, which have both planar and central chirality, are synthesized. The Cu(I)-complexes of the bis(oxa~alinyl)biferracenes were found to be conformationaily flexible and have a wide bite angle (13~') by NMR and molecular modeling studies. The complexes c