Methylamine → HCID 57505641, compound

Participants

Reaction Steps

A mixture of 2-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}thio)benzoic acid (120 mg, 0.35 mmol), a solution of methylamine in tetrahydrofuran (2M, 1 mL, 2.0 mmol), O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (200 mg, 0.53 mmol) and N,N-dimethylformamide (4 mL) was stirred at room temperature for 5 hr. The mixture was evaporated under reduced pressure, ethyl acetate/tetrahydrofuran and water were added to the residue, and the aqueous layer was extracted with ethyl acetate/tetrahydrofuran (×4). Combined organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and filtrated. The filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=40/60→90/10) to give the title compound (45 mg, 41%) as a pale-yellow solid.

Provenance & Evidence