Journal
CURRENT ORGANIC SYNTHESIS
Volume 5, Issue 2, Pages 117-133Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/157017908784221594
Keywords
asymmetric epoxidation; organocatalysis; alpha,beta-unsaturated carbonyl compounds; enantioenriched epoxides
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The area of asymmetric epoxidation of alpha,beta-unsaturated carbonyl compounds is extensively studied owing to the synthetic importance of enantiomerically enriched epoxides as building blocks and products of pharmaceutical interest. In this review a comprehensive overview of the advances on the enantioselective organocatalytic methodologies for the epoxidation of alpha,beta-unsaturated carbonyl compounds is presented. Dealing with the use of small organic molecules as catalysts, enantioselective organocatalysis is a flourishing new field of asymmetric synthesis to be considered complementary and in some examples alternative to metal complexes/chiral ligands and enzymatic approaches. In this context, new methodologies of enantioselective epoxidation of alpha,beta-unsaturated ketones and aldehydes have been recently elaborated. The noteworthy features of these protocols focus on straightforwardly available, low cost, easy to handle organic catalysts and operational simplicity.
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