反应详情

(RS)-[(4-{[2-(2,6-Difluoro-3-hydroxy-phenyl)-2-ethoxy-acetylamino]-methyl}-phenyl)-imino-methyl]-carbamic acid benzyl ester (250 mg) was dissolved in EtOH (20 ml) and 0.9 N HCl in EtOH (5 ml) was added. After 10 min stirring 10% Pd/C (11 mg) was added and the mixture was hydrogenated 2 h at rt under 1 atm H2. Filtration, evaporation of the solvent and trituration with MeCN (4 ml) afforded the solid product that was washed with two portions of Et2O (5 ml). After drying on the vacuum at 50° C. 175 mg (87%) of (RS)-N-(4-carbamimidoyl-benzyl)-2-(2,6-difluoro-3-hydroxy-phenyl)-2-ethoxy-acetamide hydrochloride were obtained. White solid. MS 364.0 ([M+H]+).

1. additionwas added
2. filtrationFiltration, evaporation of the solvent and trituration with MeCN (4 ml)
3. customafforded the solid product that
4. washwas washed with two portions of Et2O (5 ml)
5. customAfter drying on the vacuum at 50° C