Synthesis of optically active diols using an efficient polymer bound cinchona alkaloid derivative
โ Scribed by Antonella Petri; Dario Pini; Silvia Rapaccini; Piero Salvadori
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 404 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0899-0042
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โฆ Synopsis
A new insoluble polymer containing a Cinchona alkaloid derivative has been synthesized and used as chiral ligand in the heterogeneous enantioselective dihydroxylation of olefins. It is shown that the enantioselectivity of the optically active diols obtained from both aliphatic and aromatic substrates is always comparable to that observed in the homogeneous phase under the same reaction conditions. A method for evaluating the enantiomeric excesses of the optically active products is also described.
๐ SIMILAR VOLUMES
Supporting information for this article is available on the WWW under http://dx.doi.org/10.1002/chem.200902303. Scheme 1. Organocatalyzed tandem intramolecular oxa-Michael addition/ electrophilic fluorination reaction to access chiral fluorinated flavanones.