反应详情

To 15.0 g (0.045 moles) of 5-{[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]} methylene-2, 4-thiazolidinedione, in 375 ml of ethyl acetate, 3.0 g of 10% palladium on carbon was added. The mixture was heated at 80° C. in the presence of 50 psi (345 KPa) of hydrogen for 4.5 hours. An additional 3.0 g of 10% palladium on carbon was added and the mixture was again heated at 80° C. in the presence of 50 psi (345 KPa) of hydrogen for 2 hours. The catalyst was removed by filtration and the filtrate was evaporated to afford a solid. The solid was recrystallized from toluene and dried at 60° C. to obtain 8.93 g (59% yield) of subtitled compound.

1. customThe catalyst was removed by filtration
2. customthe filtrate was evaporated
3. customto afford a solid
4. customThe solid was recrystallized from toluene
5. customdried at 60° C.