O-ethylhydroxylamine hydrochloride → (E)-N-ethoxy-1-[3-(1-quinolin-6-ylcyclopropyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]ethanimine

Participants

Reaction Steps

A solution of 1-(3-(1-(quinolin-6-yl)cyclopropyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)ethanone (30 mg, 0.09 mmol) and O-ethyl-hydroxylamine hydrochloride (18 mg, 0.18 mmol) in 2 mL of DCM was stirred at 40° C. overnight. The solvent was removed under reduced pressure and the residue was purified by flash chromatography on silica gel eluting with EtOAc/methanol gradient to afford the title compound. 1H-NMR (400 MHz, CDCl3) 3 ppm 8.84 (d, 1H), 8.29 (d, 1H), 8.25 (d, 1H), 7.92-7.91 (m, 2H), 7.72-7.68 (m, 2H), 7.49 (dd, 1H), 4.26 (q, 2H), 2.01 (s, 3H), 1.76 (s, 2H), 1.66 (s, 2H), 1.27 (t, 3H). LCMS (method A): [MH]+=373, tR=5.56 min.

Provenance & Evidence