Hydrochloric Acid → 2-{4-[2-(6-[(3-Chlorophenyl)(hydroxyimino)methyl]-2-oxo-1,3-benzothiazol-3(2H)-yl)ethoxy]phenoxy}-2-methylpropanoic acid

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Reaction Steps

To a solution of the compound obtained in Example 37 (0.6 g) in 5 ml of ethanol 95° there is added potassium hydroxide (90 mg) dissolved in 1 ml of ethanol 95°. The reaction mixture is heated at reflux overnight. After cooling to ambient temperature, the solution is acidified using 1N HCl. The precipitate obtained is then filtered and purified on a reverse phase, RP18, eluant MeOH/H2O 6/4, to yield the title compound in the form of a white powder.

Provenance & Evidence