Fig. 2: CuAAC-AMT synthesis of amphoteric ChB/XB/HB [2]rotaxane receptors. | Nature Chemistry

Fig. 2: CuAAC-AMT synthesis of amphoteric ChB/XB/HB [2]rotaxane receptors.

From: Amphoteric chalcogen-bonding and halogen-bonding rotaxanes for anion or cation recognition

Fig. 2

CuAAC-AMT reaction of a 1:1 mixture of macrocycle 3 and [Cu(CH3CN)4]PF6, in the presence of excess alkynyl 5 and azido 6/7 stopper units affords the series of tri- (8) and tetradentate (9) ChB/XB/HB amphoteric [2]rotaxanes. The binding cavities of the mechanically interlocked receptors are incorporated with amphoteric ChB/XB/HB donors for convergent and multidentate anion or cation recognition. Isolated yields are indicated in parentheses.

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