Potassium Carbonate → 4-(4-{1-(4-Fluorophenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxoazetidin-2-yl}phenoxy)butane-1-sulfonic acid

Participants

Reaction Steps

250 mg of 1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-hydroxyphenyl)azetidin-2-one (7) were dissolved in 6 ml of absolute dimethylformamide. 337 mg of powdered potassium carbonate and 69 μl of 1,4, -butanesultone were added. The mixture was stirred at room temperature overnight. The reaction solution was filtered and concentrated under oil pump vacuum. The residue was chromatographed on a 10 g SiO2 cartridge (dichloromethane/methanol=5/1) and crystallized from diethyl ether. The product (131 mg) was obtained as a solid.

Provenance & Evidence