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N-benzyltriazolium as both a molecular station and a barrier for the DB24C8 in a [2]rotaxane molecular machine. Reagents and conditions: a) 1) HCl, 2) NH4PF6; b) DIEA; c) 1) BnBr, CH2Cl2, 4 d, RT, 2) NH4PF6, CH2Cl2/H2O, 30 min, 79 %; d) Boc2O, DIEA, 15 h, RT, 93 %; e) 1) BnBr, CH2Cl2, 5 d, RT, 2) NH4PF6, CH2Cl2/H2O, 30 min, 65 %; f) 1) HCl, 1 h, RT, 2) NH4PF6, CH2Cl2/H2O, 30 min, 60 %.
