Acetic Acid → tert-butyl (3R,4R,5S)-1-(3-aminopyridin-4-yl)-4-(tert-butyldimethylsilyloxy)-5-methylpiperidin-3-ylcarbamate

Participants

Reaction Steps

A mixture of tert-butyl [(3R,4R,5S)-4-{[tert-butyl(dimethyl)silyl]oxy}-5-methyl-1-(3-nitropyridin-4-yl)piperidin-3-yl]carbamate (130 mg, 0.279 mmol), AcOH (10.0 mL, 176 mmol) and iron powder (558 mg, 1.00 mmol) was stirred at room temperature for 2 h. The mixture was diluted with 30 mL of EtOAc and filtered through a pad of diatomaceous earth and the filtrate was then concentrated under reduced pressure. The resulting residue was diluted with EtOAc and then washed with aq. Na2CO3 solution and 0.2 M NaOH. The organic extract was concentrated under reduced pressure to give 0.622 g of the sub-title compound as a brown solid. LCMS calc. for C22H41N4O3Si (M+H)+: m/z=437.3. found: 437.1.

Provenance & Evidence