Abstract
AbstractThe first C2‐symmetric immobilized organocatalyst for asymmetric aldol reactions containing the (1R,2R)‐bis[(S)‐prolinamido]cyclohexane unit tagged with two imidazolium+/PF6– ion pairs has been synthesized. In its presence, (hetero)aromatic aldehydes reacted with linear or cyclic ketones in aqueous media to yield chiral aldols with high diastereo‐ and enantioselectivities and the catalyst could be recovered and reused at least 10 times without any decrease in the reaction rate or selectivity.
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