Figure 21.

Takata's chiral rotaxanes for asymmetric benzoin condensations: a) example of one of the chiral rotaxanes studied, and b) example of benzoin condensation reaction where rotaxane (R)‐35 +Cl− acted as a catalyst.

Takata's chiral rotaxanes for asymmetric benzoin condensations: a) example of one of the chiral rotaxanes studied, and b) example of benzoin condensation reaction where rotaxane (R)‐35 +Cl− acted as a catalyst.