Hydrazine hydrate (1:1) → [2-(2-Amino-ethyl)-phenyl]-acetic acid tert-butyl ester

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Reaction Steps

A solution of {2-[2-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-vinyl]-phenyl}-acetic acid tert-butyl ester (1.97 g) and hydrazine hydrate (1.97 mL) in EtOH (75 mL) was heated at reflux for 90 minutes. The solids were removed by filtration and the filtrate was concentrated in vacuo. The residue was dissolved in EtOAc (50 mL) and the solution was washed with saturated NaHCO3 followed by brine. The organic solution was dried over MgSO4, filtered, and concentrated. Purification by flash chromatography (CHCl3:MeOH 97.5:2.5 to 95:5 to 9:1) provided the title amine (853 mg). MS 236 (M+1).

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