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The general scheme of triazole rings synthesis on solid support. Reagents and conditions: (i) 20% piperidine in DMF; (ii) trifluoromethanesulfonyl azide in DCM, MeOH and K2CO3, CuSO4 in H2O (2:1:1 v/v/v), and Fmoc-propargylamine 24; (iii) THF and CuSO4, sodium ascorbate in H2O (2:1 v/v).
