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  • Title: A recyclable fluorous (S)-pyrrolidine sulfonamide promoted direct, highly enantioselective Michael addition of ketones and aldehydes to nitroolefins in water.
    Author: Zu L, Wang J, Li H, Wang W.
    Journal: Org Lett; 2006 Jul 06; 8(14):3077-9. PubMed ID: 16805556.
    Abstract:
    [reaction: see text] A recycle and reusable fluorous (S)-pyrrolidine sulfonamide organocatalyst has been developed for promoting highly enantio- and diastereoselective Michael addition reactions of ketones and aldehydes with nitroolefins in water. The organocatalyst is conveniently recovered from the reaction mixtures by fluorous solid-phase extraction and can be subsequently reused (up to six cycles) without a significant loss of catalytic activity and stereoselectivity.
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