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Improved procedure for the room temperature asymmetric phase-transfer mediated epoxidation of α,β-unsaturated ketones

✍ Scribed by Barry Lygo; Daniel C.M To

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
95 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

Studies into the factors affecting the rate of reaction in the enantioselective epoxidation of a,b-unsaturated ketones utilising Cinchona alkaloid-derived quaternary ammonium phase-transfer catalysts are reported. This has led to the identification of improved conditions for the room temperature epoxidation process, which require only 1 mol% catalyst and lead to isolation of the epoxide products in high enantiomeric excess.

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