Water → (E)-3-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]piperidin-2-one

Participants

Reaction Conditions

Reaction Steps

To a sodium hydride suspension (40% mineral oil content, 2.77 g) in THF (50 mL) and DMF (200 mL), a solution of 3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzaldehyde (10 g) obtained in Example 1 and 1-acetylpiperidin-2-one (7.17 g) in THF (50 mL) and DMF (200 mL) were added dropwise over 20 minutes at 5° C. This reaction solution was agitated at 0° C. for 2 hours. The reaction solution was added to iced water and the reaction solution was extracted with ethyl acetate. The obtained organic layer was washed with a saturated sodium chloride solution, and concentrated under reduced pressure after dried over anhydrous magnesium sulfate. The deposited solids were separated by filtering and 5.0 g of the title compound was obtained by washing with diethyl ether. The physical properties of the compound are as follows.

Provenance & Evidence