反应详情

温度

140 °C

1.6 g (5 mmole) N-{4-[2-(4-formylphenoxy)ethyl]phenyl}methanesulfonamide, 0.73 g (6.25 mmole) 2,4-thiazolidinedione and 1.025 g (12.5 mmole) sodium acetate were mixed and heated to 140° C. on an oil bath under vacuum (it melted at 130° C.). It was kept at 140° C. for 20 minutes and thereafter taken off the heat. When the temperature was low enough water:acetone (2:1) was added to dissolve the reaction product. Acetone was evaporated in vacuo, acetic acid was added and the obtained crystals were filtered off and recrystallized in dichloromethane to give 0.83 g (yield 40%) of 5-(4-[2-(4-methanesulfonylamino-phenyl)ethoxy]benzylidene)thiazolidine-2,4-dione.

1. additionwas added
2. dissolutionto dissolve the reaction product
3. customAcetone was evaporated in vacuo, acetic acid
4. additionwas added
5. filtrationthe obtained crystals were filtered off
6. customrecrystallized in dichloromethane