Bicarbonate Ion → 5-Methyl-2-(5-phenyl-2H-1,2,4-triazol-3-ylsulfanylmethyl)-[1,2,4]triazolo[1,5-a]pyridine

Participants

Reaction Conditions

Reaction Steps

Triethylamine (0.7602 mL, 5.454 mmol) was added to a solution of [2-Chloromethyl-5-methyl-(1,2,4]triazolo[1,5-a]pyridine (495 mg, 2.73 mmol) in N,N-Dimethylformamide (12 mL, 150 mmol) and the solution was stirred aprox 2 mins. 5-Phenyl-2H-1,2,4-triazole-3-thiol (532 mg, 3.00 mmol) was added to the mixture as a solid. The reaction mixture was subsequently heated at 60° C. for 0.5 hours. The mixture was rotovaped. EtOAc (60 mL) and sat. bicarbonate (20 mL) were added to the residue and the phases were separated. The organic phase was washed with brine (20 mL). After drying (MgSO4), the solvent was removed under reduced pressure. The crude product was purified by silica gel chromatography (Eluent: EtOAC:N-heptane 50-100%). This afforded 542 mg (61%) of the title compound as a white solid. LC-MS: m/z=323.1 (MH+), tR=0.52 min, Method B. 1H NMR (600 MHz, DMSO-ds): δ 7.96 (d, 2H), 7.63 (m, 1H), 7.60 (t, 1H) 7.50 (m, 3H), 7.06 (d, 1H), 4.68 (s, 2H), 2.67 (s, 3H).

Provenance & Evidence