Hydrochloric Acid → 1-[3-(7-Fluoro-quinolin-6-ylmethyl)-3H-[1,2,3]triazolo[4,5-b]pyrazin-5-yl]-ethanone

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Reaction Steps

A solution of the 6-[6-(1-ethoxy-vinyl)-[1,2,3]triazolo[4,5-b]pyrazin-1-ylmethyl]-7-fluoro-quinoline (600.0 mg, 0.89 mmol) and 3 N HCl (0.1 mL) in acetic acid was stirred at 50° C. for 2 hour. The solvent was removed under reduced pressure. The residue was diluted with water, adjusted the pH value of solution to around 8 with aqueous NaHCO3, extracted with DCM twice. The combined organic layers were washed sequentially with water and brine, dried over Na2SO4, filtered and concentrated in vacuo to give the title compound as a white solid (630 mg, 96%). 1H1H-NMR (400 MHz, CDCl3) δ ppm 9.46 (s, 1H), 8.94 (d, 1H), 8.11 (d, 2H), 7.85 (dd, 1H), 7.41 (dd, 1H), 6.23 (s, 2H), 2.79 (s, 3H). LCMS (method A): [MH]+=323, tR=2.23 min.

Provenance & Evidence