Thiazolidinedione → 5-[8-Methoxy-1-(4-methoxycarbonyl benzyl)-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethylidene]thiazolidine-2,4-dione

Participants

Reaction Steps

7.0 g of 8-methoxy-1-(4-methoxycarbonylbenzyl)-2-oxo-1,2,3,4-tetrahydroquinoline-5-carboxaldehyde and 3.25 g of 2,4-thiazolidinedione were suspended in 70 ml of toluene. Ten drops of piperidine and ten drops of acetic acid were added, followed by heating and refluxing for 4 hours. The resultant was allowed to cool to precipitate a solid, and the precipitated solid was collected by filtration and dried, giving 8.0 g (90% yield) of 5-[8-methoxy-1-(4-methoxycarbonylbenzyl)-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethylidene]thiazolidine-2,4-dione as a light yellow powder.

Provenance & Evidence