Formic Acid → HCID 59255521, compound

Participants

Reaction Conditions

Reaction Steps

To a N-methylpyrrolidinone (4 mL) solution of 5-chloro-3-(5-(4-(pyridin-2-ylmethoxy)-benzyl)-isoxazol-3-yl)-pyridin-2-ylamine (141 mg, 0.359 mmol) described in Manufacturing Example 189-1-2 were added tetrakis(triphenylphosphine)palladium (0) (42 mg, 36 μmol), formic acid (20 μL, 0.58 mmol), and N,N-diisopropylethylamine (193 μL, 1.08 mmol), which was stirred under nitrogen atmosphere for 5 hours and 35 minutes at 100° C. Water was added to the reaction mixture at room temperature, which was extracted with ethyl acetate. The organic layer was separated, washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure. The residue was purified by reverse-phase high performance liquid chromatography (using an acetonitrile-water mobile phase containing 0.1% trifluoroacetic acid), and then further purified by NH silica gel column chromatography (ethyl acetate: methanol=10:1) to obtain the title compound (8.3 mg, 6.5%).

Provenance & Evidence