反应详情

A 250-mL single-neck round-bottomed flask was purged with nitrogen and charged with 287a (16.0 g, 1.0 eq., 80.0 mmol), 10% palladium on carbon (50% wet, 800 mg), and methanol (100 mL). The mixture was evacuated, charged with hydrogen gas, and stirred under hydrogen atmosphere at room temperature overnight. The hydrogen was then evacuated and nitrogen was charged into the flask. The catalyst was removed by filtration through a pad of CELITE®. The filtrate was concentrated under reduced pressure to afford 287b (11.0 g, 81%) as white solid. MS-ESI: [M+H]+ 171.1

1. customA 250-mL single-neck round-bottomed flask was purged with nitrogen
2. customThe mixture was evacuated
3. additioncharged with hydrogen gas
4. customThe hydrogen was then evacuated
5. additionnitrogen was charged into the flask
6. customThe catalyst was removed by filtration through a pad of CELITE®
7. concentrationThe filtrate was concentrated under reduced pressure