Potassium Hydroxide → 2-((Tert-butoxycarbonyl)(2-(tert-butyldisulfanyl)ethyl)amino)acetic acid

Participants

Reaction Steps

Ethyl 2-((tert-butoxycarbonyl)(2-(tert-butyldisulfanyl)ethyl)amino)acetate (Compound 6e-A, 320 mg, 0.91 mmol) was dissolved in methanol (80 ml), an aqueous potassium hydroxide solution (0.18 mol/l, 30.3 ml) was added and the mixture was stirred at room temperature for 2 hours. Methanol in the reaction solution was removed by concentration under reduced pressure, and the aqueous layer was washed with diethyl ether and then adjusted to pH 3 with a 1 mol/1 aqueous hydrochloric acid solution. The aqueous layer was extracted with ethyl acetate, and the organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure to afford the title compound (268.1 mg, 91%).

Provenance & Evidence