Trifluoroacetic acid → HCID 59750273, compound

Participants

Reaction Steps

tert-Butyl 3-{3-[6-(4-oxo-4H-1,3-benzothiazin-2-yl)-3-pyridyl]propoxy}propanoate (1.0 g, 2.3 mmol) and trifluoroacetic acid (4.0 ml) was stirred under ice cooling condition for 5 hrs. The reaction mixture was concentrated under reduced pressure, diluted with chloroform, washed with water and dried. The solvent was evaporated. The residue was subjected to a silica gel column chromatography, eluted with ethyl acetate-methanol (20:1, v/v) and recrystallized from chloroform-ethyl acetate to give the titled compound (0.55 g, 66%).

Provenance & Evidence