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  • Title: Enantioselective assembly of substituted dihydropyrones via organocatalytic reaction in water media.
    Author: Wang J, Yu F, Zhang X, Ma D.
    Journal: Org Lett; 2008 Jun 19; 10(12):2561-4. PubMed ID: 18476713.
    Abstract:
    The diarylprolinol ether/HOAc-catalyzed cascade Michael addition and cyclization of aldehydes and alpha-keto-alpha,beta-unsaturated esters proceeds smoothly in water to afford cyclic hemiacetals, which are oxidized to furnish highly functionalized 3,4,5,6-tetrasubstituted dihydropyrones with excellent enantioselectivities.
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