Hydrazine → (2S)-N-((1R)-2-amino-1-[4-((S)-2-methylbutoxy)phenyl]-ethyl)-2-phenylpropionamide

Participants

Reaction Conditions

Reaction Steps

To a solution of (S)-N-{(R)-2-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-1-[4-((S)-2-methyl-butoxy)-phenyl]-ethyl}-2-phenyl-propionamide dissolved in 10 mL of EtOH, was added anhydrous hydrazine. The resulting mixture was heated to 55° C. 1.5 h. It was cooled to rt, and diluted with EtOAc. The solids were filtered off, and the filtrate concentrated and was purified by column chromatography on silica gel using 0%→10% MeOH/DCM to obtain 109 mg (96%) of the desired product. 1H NMR (400 MHz, MeOD) δ 7.19-7.33 (m, 5H), 7.05-7.12 (m, 2H), 6.79-6.88 (m, 2H), 5.12 (dd, J=8.8, 5.8 Hz, 1H), 3.77-3.86 (m, 1H), 3.69-3.77 (m, 2H), 3.21-3.29 (m, 2H), 1.81 (s, 1H), 1.57 (ddd, J=13.4, 7.6, 5.8 Hz, 1H), 1.47 (d, J=6.8 Hz, 3H), 1.22-1.35 (m, 1H), 1.02 (d, J=6.8 Hz, 3H), 0.96 (t, J=7.5 Hz, 3H); LCMS m/e calcd 355.2 [(M+H)+, for C22H31N2O2 355.2].

Provenance & Evidence