反应详情

0.5M solution of trimethyl-trifluoromethyl-silane in THF (6.68 mL, 3.344 mmol) and K2CO3 (250 mg, 10.82 mmol) were added to 2-fluoro-4-[3-(4-methyl-pyridin-3-yl)-2-oxo-imidazolidin-1-yl]-benzaldehyde (I-121a: 400 mg, 1.337 mmol) in dry DMF (5 mL) under nitrogen atmosphere. The resulting mixture was stirred at room temperature overnight. The reaction was monitored by TLC (5% MeOH in CHCl3). The reaction mixture was quenched with brine solution and the THF layer was concentrated. The aqueous layer was extracted with chloroform. The organic layer was dried over Na2SO4 and concentrated to get the crude product. Purification by column chromatography on silica gel (2.5% MeOH in CHCl3), followed by hexane wash, afforded 325 mg of the product (65.92% yield).

1. customThe reaction mixture was quenched with brine solution
2. concentrationthe THF layer was concentrated
3. extractionThe aqueous layer was extracted with chloroform
4. dry with materialThe organic layer was dried over Na2SO4
5. concentrationconcentrated
6. customto get the crude product
7. customPurification by column chromatography on silica gel (2.5% MeOH in CHCl3)
8. washwash