反应详情

A solution of 5-[4-[(2,2-diethoxy)ethoxy]phenyl methylene]thiazolidin-2,4-dione (8.0 g, 23.7 mmol) obtained in example 1, in 1,4-dioxane (100 mL) was reduced with hydrogen in the presence of 10% palladium on charcoal (16.0 g) at 60 psi for 60 h. The mixture was filtered through a bed of celite. The filtrate was evaporated to dryness under reduced pressure; purified by column chromatography using EtOAc:pet. ether (1:1) as an eluent to afford the title compound (8.04 g, 67%) as a colourless liquid.

1. filtrationThe mixture was filtered through a bed of celite
2. customThe filtrate was evaporated to dryness under reduced pressure
3. custompurified by column chromatography