Thiazolidinedione → 2,4-Thiazolidinedione, 5-(2-thienylmethylene)-, (Z)-

Participants

Reaction Steps

To a solution of 20 g (171 mmol) of 2,4-thiazolidinedione and 16.0 ml (171 mmol) of 2-thiophenecarboxaldehyde in 350 ml of ethanol, 1.68 ml (17.1 mmol) of piperidine was added, and the mixture was heated under reflux for 5 hours. After cooling, the precipitated crystals were filtered and washed with cooled ethanol to give 24.03 g of the desired compound (66.6% yield, pale yellow crystals).

Provenance & Evidence