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Synthesis of bis(triazole) macrocycle 3 and tetra(triazole) macrocycle 4. Conditions and reagents: (i) 1,6-Heptadiyne, [CuI(CH3CN)4](PF6), tris[(benzyltriazol-4-yl)methyl]amine (TBTA), diisopropylamine (DIPEA), CH2Cl2, 50%; (ii) CuII(OAc)2·H2O, CH3CN, reflux, 54% of 3, 12% of 4.
