Abstract
A route to the MDM2-p53 inhibitor isoindolinone pharmacophore from a pre-formed phthalimide is detailed. The route involves treatment of 3-hydroxy-2-(n-propyl)isoindolinone with a substituted benzene in the presence of triflic acid. The resulting 3-aryl-2-(n-propyl)isoindolinones are then oxidized to the corresponding 3-hydroxy-3-aryl-2-(n-propyl) isoindolinones by treatment with 2,2’-bipyridinium chlorochromate. The benzylic oxidation represents a rather rare oxochromium (VI)-mediated reaction in which a selective C–H to C–OH transformation occurs.
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