反应详情

The 5,7-difluoro-2-tetralone (0.3 mmol) was dissolved in 2.0 mL of anhydrous dichloromethane under N2 at rt. 2-(S)-Amino-pentanoic acid (5-isopropyl-thiazol-2-yl)-amide (0.3 mmol) was then added to the reaction solution, followed by sodium triacetoxy borohydride (0.3 mmol) and acetic acid (0.3 mmol). The reaction was stirred at rt for 16 h. The crude solution was then diluted with 20 mL of EtOAc and washed with 20 mL of aqueous 1N NaOH solution and brine. The organic layer was dried over Na2SO4, filtered and concentrated under reduced pressure. The crude products were purified through flash chromatography to give 2-(S)-(5,7-Difluoro-1,2,3,4-tetrahydro-naphthalen-2-ylamino)-pentanoic acid (5-isopropyl-thiazol-2-yl)-amide. LC-MS (retention time, M+1): 2.2 min, 408 [M+1].

1. washwashed with 20 mL of aqueous 1N NaOH solution and brine
2. dry with materialThe organic layer was dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customThe crude products were purified through flash chromatography