tert-butyl (3S)-3-amino-4-phenylbutanoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-cyano-4-hydroxy-7-phenoxy-isoquinoline-3-carboxylic acid methyl ester (40 mg, 0.125 mmol) and (S)-3-amino-4-phenyl-butyric acid tert-butyl ester (88 mg, 0.375 mmol) (Acros Organics, Thermo Fisher Scientific, Morris Plains N.J.) in 2-methoxyethanol (10 mL) was refluxed for 1.5 h. The resulting mixture was concentrated in vacuo, and the residue was purified by column chromatography (0-40% EtOAc/hexanes) to give 50 mg of the title compound. MS: (−) m/z 522.25 (M−1). was refluxed for 1.5 h The resulting mixture was concentrated in vacuo the residue was purified by column chromatography (0-40% EtOAc/hexanes)