1H NMR (THF-d8-D2O [3 : 1], 500 MHz, 298 K) analysis of the cleavage of rotaxane14 a: i. rotaxane14 a(‘ is used to signify signals arising from the minor diastereomer); ii. rotaxane14 a+TBAF (3 equiv.) after 1 h; iii. axle15(labels and colors as in Scheme 2).
