Acetyl chloride → HCID 86585080, compound

Participants

Reaction Steps

A solution of 124 mg (0.2 mmol) (2S,4R)-{[4-Mercapto-1-(naphthalene-2-sulfonyl)-pyrrolidine-2-carbonyl]-phenethyl-amino}-acetic acid in 3.2 ml pyridine were treated at 0° C. with 0.04 ml (0.4 mmol) acetyl chloride and stirred for 10 min at RT. The reaction was poured on ice water and extracted wit 1N HCl/EtOAc (3×). The organic phases were washed with aqueous 1 N HCl and 10% NaCl, dried over Na2SO4 and evaporated. Precipitation from CH2Cl2/Pentane (4° C.) gave 30 mg (28%) (2S,4R)-{[4-Acetylsulfanyl-1-(naphthalene-2-sulfonyl)-pyrrolidine-2-carbonyl]-phenethyl-amino}-acetic acid, mp: 190-193° C.; MS: 539 (M-H)−.

Provenance & Evidence