Hydrochloric Acid → HCID 118659447, compound

Participants

Reaction Steps

To a stirring solution of (S)-methyl 3-((tert-butoxycarbonyl)amino)-2-(6-(((trans)-2-(hydroxymethyl)cyclopropyl)ethynyl)benzo[b]thiophene-2-carboxamido)-3-methylbutanoate (7.3) in methanol (10 mL) was added 4N HCl in dioxane (10 mL) and the reaction was stirred at room temperature for 2 hr, then at 4° C. overnight. The reaction mixture was concentrated under reduced pressure to yield a residue, which was partitioned between water and MTBE. The aqueous layer was basified with saturated sodium bicarbonate and extracted with ethyl acetate. The organic layer was washed with saturated sodium chloride, dried over magnesium sulfate, filtered and concentrated under reduced pressure to give (S)-methyl 3-amino-2-(6-(((trans)-2-(hydroxymethyl)cyclopropyl)ethynyl)benzo[b]thiophene-2-carboxamido)-3-methylbutanoate (7.4, 880 mg, 2.2 mmol, 67%).

Provenance & Evidence