反应详情

To a solution of 2,4,6-trichloropyrimidine (1.0 g) and potassium carbonate (0.84 g) in acetonitrile (20 ml) was added a solution of N-(4-((piperazin-1-yl)methyl)phenylmethyl)acetamide (1.0 g) obtained in Example 78(2) in acetonitrile (20 ml) under ice-cooling over 5 min. The mixture was stirred at the same temperature for 30 min. The reaction mixture was poured into water (100 ml) and extracted with ethyl acetate. The extract was washed with brine and dried over anhydrous sodium sulfate. The solvent was evaporated to give a pale-brown oil (1.6g). The obtained pale-brown oil was purified by silica gel column chromatography (developing solvent; chloroform:methanol=50:1) to give a crude purification product (0.28 g) of N-(4-((4-(4,6-dichloropyrimidin-2-yl)piperazin-1-yl)methyl)phenylmethyl)acetamide and a crude purification product (0.9 g) of N-(4-((4-(2,6-dichloropyriinidin-4-yl)piperazin-1-yl)methyl)phenylmethyl)acetamide. The crude purification product of N-(4-((4-(4,6-dichloropyrimidin-2-yl)piperazin-1-yl)methyl)phenylmethyl)acetamide was crystallized from ethyl acetate:hexane to give the title compound (0.2 g) as white crystals, m.p.=139-140° C.

1. temperaturecooling over 5 min
2. extractionextracted with ethyl acetate
3. washThe extract was washed with brine
4. dry with materialdried over anhydrous sodium sulfate
5. customThe solvent was evaporated