Enantioselective synthesis of β-hydroxy ketones from heterocyclic aldehydes in water catalyzed by a recyclable organocatalyst bearing an ionic liquid moiety
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Abstract
The aldol reactions of cyclic (heterocyclic) ketones and heterocyclic aldehydes catalyzed by (4R,S)-4-hydroxyproline modified with a ionic liquid moiety proceed with high yields and diastereo- and enantioselectivity in the presence of water. The catalyst retained its activity and selectivity for at least five cycles.
Key words
organocatalysis asymmetric aldol reaction water β-hydroxy ketones heterocyclic aldehydes catalyst regeneration ionic liquidsPreview
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References
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