Hydrochloric Acid → (S)-2-Acetylamino-3-{3-benzyloxy-4-[1,1,4-trioxo-5-(2-trimethylsilanylethyl)-1,2,5-thiadiazolidin-2-yl]-phenyl}-propionic Acid Tert-butyl Ester

Participants

Reaction Steps

To a Solution of (S)-2-Amino-3-{3-Benzyloxy-4-[1,1,4-Trioxo-5-(2-Trimethylsilanylethyl)-1,2,5-thiadiazolidin-2-yl]-phenyl}-propionic acid tert-butyl ester (150 mg, 0.27 mmol) and triethylamine (0.57 mL, 0.41 mmol) in methylene chloride (10 mL) at 0° C. is added acetyl chloride (0.21 mL, 0.3 mmol) dropwise then the mixture is stirred at RT for 2 h. Water and 1N HCl is added until pH 4 and the mixture is extracted with methylene chloride. The organic phase is washed with brine and dried over sodium sulfate. The solvent is removed under reduced pressure to give the title compound as an oil.

Provenance & Evidence