反应详情

A mixture of 4-(5-bromo-2-thiophenesulfonyl)-1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-2-piperazinone (115 mg), 4-chlorophenylboronic acid (52 mg), tetrakistriphenylphosphine palladium (25 mg), 2M sodium carbonate solution (0.25 ml) and dimethoxyethane (10 ml) was refluxed for 15 hours. The reaction solution was concentrated, and to the residue was sodium bicarbonate solution. The mixture was extracted with ethyl acetate, washed with brine, dried, and concentrated, and the residue was purified with silica gel column chromatography (hexane:ethyl acetate=1:3) to give colorless solid of 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-[5-(4-chlorophenyl)-2-thiophenesulfonyl]-2-piperazinone (113 mg).

1. temperaturewas refluxed for 15 hours
2. concentrationThe reaction solution was concentrated
3. extractionThe mixture was extracted with ethyl acetate
4. washwashed with brine
5. customdried
6. concentrationconcentrated
7. customthe residue was purified with silica gel column chromatography (hexane:ethyl acetate=1:3)