Tributylphosphine → 4-((4-Chloro-3-fluorobenzyl)oxy)-1-(2-cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)pyridin-2(1H)-one

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-(2-cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)-4-hydroxypyridin-2(1H)-one (150 mg), (4-chloro-3-fluorophenyl)methanol (170 mg) and tributylphosphine (322 mg) in THF (10 ml) was added 1,1′-(azodicarbonyl)dipiperidine (401 mg) in THF (5 ml). The mixture was stirred under sonication at 60° C. for 4 h. The reaction mixture was then cooled to room temperature and concentrated in vacuo. The residue was diluted with DCM, and the DCM layer was washed with water and brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography (MeOH/DCM) to give the title compound (50 mg) as a white solid.

Provenance & Evidence