反应详情

A solution of N-(4-chloromethylphenylmethyl)acetamide (1.0 g), 1-(2-pyridyl)piperazine (1.4 g) and potassium carbonate (4.2 g) in dimethylformamide (20 ml) was stirred at 60-70° C. for 2.5 hr. The reaction mixture was poured into water and extracted with ethyl acetate. The extract was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated to give a brown oil. The obtained brown oil was purified by silica gel column chromatography (developing solvent; chloroform:methanol=20:1) to give a pale-yellow oil (2.5 g). The obtained pale-yellow oil was crystallized from ethyl acetate and the crystals were recrystallized from ethyl acetate to give the title compound (1.4 g) as white crystals, m.p.=100-101° C.

1. extractionextracted with ethyl acetate
2. washThe extract was washed with saturated brine
3. dry with materialdried over anhydrous sodium sulfate
4. customThe solvent was evaporated
5. customto give a brown oil
6. customThe obtained brown oil was purified by silica gel column chromatography (developing solvent; chloroform:methanol=20:1)