“…2-(4-Chlorophenyl)-5-pyridin-2-yl-2H- [ 1 , 2 , 3 ] triazol-4-ylamine ( 6a ): Yellow crystals (80%); mp.167-169 o C; IR (cm -1 ): 3303, 3155 (NH 2 ); 1 H-NMR: δ = 6.30 (s, 2H, NH 2 ), 7.30-8.0 (m, 4H, pyr-H), 8.02 (d, 2H, J = 7.2 Hz, Ar-H), 8.6 (d, 2H, J = 7.2 Hz, Ar-H); 13 C-NMR: δ = 152.8, 150.7, 148.8, 137.9, 137.2, 132.1, 130.3, 129.4, 122.3, 119.7, 118.7; Anal. Calcd.…”