Novel polymer-supported organocatalyst via ion exchange reaction: facile immobilization of chiral imidazolidin-4-one and its application to Diels-Alder reaction

The polymer-supported organocatalyst was prepared by ion exchange reaction of MacMillan iminium catalyst with polymer-supported sulfonic acids. Resulting polymeric organocatalyst was effective for Diels-Alder reaction of 1,3-cyclopentadiene and trans-cinnamaldehyde in CH3OH/H2O, affording good enantioselectivity and reusability.

The polymer-supported organocatalyst prepared by ion exchange reaction with polymer-supported sulfonic acids was effective for Diels-Alder reaction of 1,3-cyclopentadiene and trans-cinnamaldehyde in CH3OH/H2O, affording good enantioselectivity and reusability.