Acetyl chloride → HCID 86584860, compound

Participants

Reaction Steps

130 mg (0.325 mmol) [2S,4R]-2-{[acetyl-(2,5-difluoro-benzyl)-amino]-methyl}-4-mercapto-pyrrolidine-1-carboxylic acid butyl ester in 3 ml pyridine were treated with 120 μl (1.68 mmol, 5.1 eq) acetyl chloride at 0° C. The resulting suspension was diluted with 8 ml CH2Cl2, and the mixture was stirred at RT over night, concentrated in vacuo and the oil was redissolved in EtOAc/1M HCl. The inorganic phase was extracted with CH2Cl2 and the organic phases were washed with 1M HCl and brine, dried over Na2SO4. The crude product was purified by flash column chromatography with EtOAc/hexane 1:1 as eluent yielding 118.2 mg (82%) [2S,4R]-2-{[acetyl-(2,5-difluoro-benzyl)-amino]-methyl}-4-acetylsulfanyl-pyrrolidine-1-carboxylic acid butyl ester as light yellow oil, MS: 443 (MHf).

Provenance & Evidence