Abstract
Supramolecular asymmetric catalysis has arisen from the in-depth intersection of supramolecular chemistry and asymmetric catalysis due to its unique advantages in building chiral catalyst libraries and regulating performance of catalysts. Herein, we combine crown ether based host-guest chemistry with chiral phosphoric acid mediated asymmetric catalysis to actualize the supramolecular regulation of catalytic asymmetric two-component tandem acetalization reactions. By comparison with the catalytic reaction without host-guest interaction, improvement of up to 72% in yield and increases of up to 13% in enantioselectivity were acquired after addition of the alkali metal guests, which demonstrated the great advantages of this supramolecular regulation strategy.
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