Procedure for the catalytic asymmetric epoxidation of allylic alcohols in the presence of molecular sieves
β Scribed by Hanson, Robert M.; Sharpless, K. Barry
- Book ID
- 118000713
- Publisher
- American Chemical Society
- Year
- 1986
- Tongue
- English
- Weight
- 703 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0022-3263
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π SIMILAR VOLUMES
The titanium-catalyzed, asymmetric epoxidation of dialkyl-and phenylsubstituted allylic alcohols with various enantiomerically pure hydroperoxides has been examined in the presence of achiral diol ligands. Enantioselectivities with ee values up to 50% were achieved in the oxygen transfer from (-)-(S
Peroxotungstic acid and quaternary ammonium peroxotungstic salts when complexed to organophosphorus(V) ligands exhibit enhanced reactivity and selectivity in the epoxidation of unsaturated alcohols with hydrogen peroxide. The organophosphorus ligands contain the phosphoryl O=P= subunit as complexing
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