Dimethylformamide → 4'-{[6-ethyl-3-[2-(1-methyl-1H-benzoimidazol-2-yl)-2-oxoethyl]-2,4-dioxo-3,4-dihydrothieno[2,3-d]pyrimidin-1(2H)-yl]methyl}biphenyl-2-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a mixture of 4′-[(6-ethyl-2,4-dioxo-3,4-dihydrothieno[2,3-d]pyrimidin-1(2H)-yl)methyl]biphenyl-2-carbonitrile (1.0 g), 2-bromo-1-(1-methyl-1H-benzoimidazol-2-yl)ethanone (1.0 g) and N,N-dimethylformamide (10 mL) was added 60% sodium hydride (0.16 g), and the mixture was stirred at 50° C. for 24 hr. After allowing to cool to room temperature, ethyl acetate and water were added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was successively washed with water and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give the title compound as a pale-yellow amorphous solid (0.28 g, 19%).

Provenance & Evidence