Hydrochloric Acid → HCID 57955652, compound

Participants

Reaction Conditions

Reaction Steps

Compound ethyl 4-((2-chloro-5-nitropyrimidin-4-yl)((3R)-3-methylcyclopentyl)amino)-3,3-difluoro-2-oxobutanoate was dissolved in AcOH and then cooled in an ice bath (sometimes this crystallizes out upon cooling). Iron powder (2 equivalents) was added followed by the slow addition of HCl (15 mL, conc.). After 10 minutes the reaction was transferred to a heat bath and left to stir at 60° C. for 5 hours. The reaction was then cooled, the stir bar and unreacted iron removed with a magnet (or by filtration through paper), and the solvent volume reduced by about 75% on a rotovap. The mixture was then diluted with ice water (150 mL) and EtOAc (1500 mL), the layers separated, the aqueous layer washed with EtOAc (2×150 mL), the organic extracts combined, washed with sat. NaHCO3 (100 mL), brine (100 mL), dried over MgSO4, filtered and concentrated to yield a brown syrup. Trituration with EtOAc (15 mL) and ether (100 mL) to coax out a tannish solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 0.91-2.29 (m, 10 H) 3.80-4.20 (m, 2 H) 4.81-5.07 (m, 1 H) 8.12 (s, 1 H) 11.07 (br. s., 1 H). m/z 317.

Provenance & Evidence