反应详情

温度

60 °C

To a solution of 6.73 g (0.0294 moles) of N,N-diethyl-4-hydroxybenzenesulfonamide in 150 ml of DMSO was added 1.18 g (0.0294 moles) of NaOH. The mixture was heated to 60° C. and 4.88 g (0.0267 moles) of 2-chloro-5-nitrobenzonitrile was added and the mixture heated at 75° C. for 3 hrs. The reaction mixture was cooled and poured into a solution of 400 ml of 2 N aqueous NaOH and 300 ml of water. The product was collected by filtration, washed well with water and dried to obtain 8.8 g of product (88% yield). Recrystallization from ethanol afforded purified N,N-diethyl-4-(2-cyano-4-nitrophenoxy)benzenesulfonamide, mp 163°-164° C.

1. temperaturethe mixture heated at 75° C. for 3 hrs
2. temperatureThe reaction mixture was cooled
3. filtrationThe product was collected by filtration
4. washwashed well with water
5. customdried