N,N'-Dimethylethylenediamine → 1-Acetyl-3-{5-chloro-2-[4-(3,5-dimethylpyridin-2-yl)piperazine-1-carbonyl]phenyl}imidazolidin-2-one

Participants

Reaction Steps

To a mixture of (2-bromo-4-chlorophenyl) [4-(3,5-dimethylpyridin-2-yl)piperazin-1-yl]methanone (817 mg) described in Preparation Example 167, 1-acetylimidazolidin-2-one (384 mg), tripotassium phosphate (849 mg) and copper(I) iodide (191 mg) were added dioxane (4 mL) and N,N′-dimethylethylenediamine (215 μL), and the mixture was stirred at 8 hr under refluxing. After cooling, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The solvent was evaporated, and the residue was purified by column chromatography (ethyl acetate:methanol) to give the title compound (639 mg).

Provenance & Evidence