Thiazolidinedione → HCID 86754591, compound

Participants

Reaction Steps

A mixture of 2-(5-methyl-2-phenyl-4-oxazolylmethoxy)cinnamaldehyde (2.00 g), 2,4-thiazolidinedione (1.10 g), piperidine (0.267 g) and acetic acid (15 ml) was heated under reflux for 2.5 hours. The reaction mixture was concentrated under reduced pressure. Crystals (1.64 g) of 5-[2-(5-methyl-2-phenyl-4-oxazolylmethoxy)cinnamilidene]-2,4-thiazolidinedione which was precipitated by addition of saturated aqueous sodium bicarbonate solution was collected by filtration and washed with ether. The crystals were dissolved in tetrahydrofuran (150 ml), and 5% palladium-carbon (1.64 g) was added. The mixture was subjected to catalytic hydrogenation at room temperature at a hydrogen pressure of 3.4 kgf/cm2. The catalyst was filtered off, and the filtrate was concentrated under reduced pressure to give crystals. The crystals were recrystallized from dichloromethane-methanol to give 5-[3-[2-(5-methyl-2-phenyl-4-oxazolylmethoxy)phenyl]-propyl]-2,4-thiazolidinedione (0.742 g, 34%). White crystals, mp. 173-174° C.

Provenance & Evidence