反应详情

To a solution of 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-2-piperazinone (5.0 g) and triethylamine (6.792 g) in dichloromethane (80 ml) was added dropwise at 0° C. a solution of 2-chloroethanesulfonyl chloride (4.11 g) in dichloromethane (20 ml), and the mixture was stirred at 0 for 30 minutes. The reaction solution was diluted with dichloromethane, washed with water, citric acid solution, sodium bicarbonate solution and brine, dried and concentrated, and the residue was purified with silica gel column chromatography (ethyl acetate) to give colorless amorphous of 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-vinylsulfonyl-2-piperazinone (3.99 g).

1. washwashed with water, citric acid solution, sodium bicarbonate solution and brine
2. customdried
3. concentrationconcentrated
4. customthe residue was purified with silica gel column chromatography (ethyl acetate)