Sulfuric Acid → HCID 89545048, compound

Participants

Reaction Steps

Step 2 To a rapidly stirred solution of crude 3-{[(1R)-1-{3-[(6-aminopyridin-3-yl)carbonyl]-4-chloro-2-fluorophenyl}propyl]amino}-4-methylpentanenitrile (0.911 mmol) in toluene (2.91 mL) and water (0.145 mL) at 0° C. was added sulfuric acid (0.966 mL). The reaction mixture was allowed to warm to room temperature and stirred overnight. The mixture was made neutral by the addition of saturated Na2CO3 solution followed by saturated NaHCO3 solution and was extracted into EtOAc (×2). The combined organic extracts were dried (Na2SO4), filtered and concentrated. The residue was purified by chiral preparative HPLC to give (3R)-3-{[(1R)-1-{3-[(6-aminopyridin-3-yl)carbonyl]-4-chloro-2-fluorophenyl}propyl]amino}-4-methylpentanamide which was converted to the HCl salt, 0.0656 g and (3S)-3-{[(1R)-1-{3-[(6-aminopyridin-3-yl)carbonyl]-4-chloro-2-fluorophenyl}propyl]-amino}-4-methylpentanamide which was also converted to the HCl salt, 0.0259 g.

Provenance & Evidence