Methanol → (S)-2-amino-N-(benzo[b]thiophen-3-ylmethyl)-N-((S)-1,1-diethoxypropan-2-yl)propanamide

Participants

Reaction Steps

(9H-Fluoren-9-yl)methyl (S)-1-((benzo[b]thiophen-3-ylmethyl)((S)-1,1-diethoxypropan-2-yl)amino)-1-oxopropan-2-ylcarbamate (Compound III-12) 15.8 g (27 mmol) and piperidine 22.7 g (270 mmol) were added in DCM (90 ml). The mixture was stirred for 1.5 h at room temperature. The mixture was diluted with DCM (200 ml) and washed with water (150 ml×3). The solution was concentrated in vacuo. The residue was purified by column chromatography on silica gel with PE:EA=50:1 to DCM:MeOH=10:1 to give the title compound 7.4 g, (yield 75%).

Provenance & Evidence