Acetic Acid → HCID 58288311, compound

Participants

Reaction Conditions

Reaction Steps

15.2 ml of acetic acid and 7.6 ml of concentrated hydrochloric acid were added to 1.96 g (3.89 mmol) of ethyl (+)-(2R)-2-(4-chloro-3-{[(2S,3R)-2-(4-chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}benzyl)butanoate. The reaction mixture was stirred under reflux for 5 h (bath temperature 140° C.). After cooling, water was added. The mixture was extracted repeatedly with dichloromethane, and the combined organic phases were washed with saturated sodium chloride solution, dried over sodium sulphate and concentrated under reduced pressure. Chromatography of the residue on silica gel (mobile phase cyclohexane/ethyl acetate 10:1→2:1) gave 1.46 g (78.6% of theory) of the title compound.

Provenance & Evidence