Reaktion #700177

Reaktionsgleichung

5-{[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]} methylene-2,4-thiazolidinedione

hydrogen

hydrogen

→

subtitled compound

Ausbeute 59.2%

5-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl-2,4-thiazolidinedione

Ausbeute 59.2%

Lösungsmittel

ethyl acetate

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe catalyst was removed by filtration
2. 2
   Sonstigethe filtrate was evaporated
3. 3
   Sonstigeto afford a solid
4. 4
   SonstigeThe solid was recrystallized from toluene
5. 5
   Sonstigedried at 60° C.

Vorschrift

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.

Quelle