Formic Acid → HCID 90410090, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-methyl-1-(pyrazin-2-yl)-1H-[1,2,3]triazolo[4,5-c]pyridine (245 mg, 1.15 mmol) in formic acid (0.70 mL, 18.5 mmol) was added dropwise triethylamine (1.28 mL, 9.24 mmol). The resulting mixture was heated to 140° C. for 24 h. The reaction was cooled and 1M NaOH was added until the pH was 7-9. The water layer was extracted with CH2Cl2 three times. The organic layers were combined, dried over anhydrous MgSO4, filtered and concentrated. The residue was dissolved in 3:1 isopropanol/concentrated HCl (4 mL) and stirred at 50° C. for 16 h. The reaction was cooled and 1M NaOH was added until pH 12 was reached. The water layer was extracted with 1:4 isopropanol/CH2Cl2 three times. The organic layers were combined, dried over anhydrous MgSO4, filtered and concentrated to a yellow solid (230 mg, 92%). MS (ESI) mass calcd. C10H12N6, 216.11. m/z found, 217.0 [M+H]+. 1H NMR (500 MHz, CDCl3) δ 9.51-9.47 (m, 1H), 8.64-8.60 (m, 1H), 8.49-8.46 (m, 1H), 4.26-4.08 (m, 2H), 3.37-3.28 (m, 1H), 3.14-3.04 (m, 1H), 2.85-2.74 (m, 1H), 2.23-2.02 (br s, 1H), 1.36 (d, J=6.3 Hz, 3H).

Provenance & Evidence