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(A) Capsules based on non-covalent interactions. (B) Diels-Alder reaction between 29 and 30 in the cavity of host 26, yielding unusual regioisomer 32. (C) A regioselective 1,3-dipolar cycloaddition accelerated within nanoreactor 28. (D) Asymmetric [2+2] photodimerization of fluoranthenes (36) and N-cyclohexylmaleimide (37) within a chiral analog of cage 26. (E) Regio- and stereoselective bimolecular radical coupling within cage 26.
