Piperidine → 5-[[3,5-Bis(1,1-dimethylethyl)-4-hydroxyphenyl]methylene]-2-thioxo-4-thiazolidinone

Participants

Reaction Steps

To a solution of 14.6 g (110 mmol) of rhodanine and 25.7 g (110 mmol) of 3,5-di-tert-butyl-4-hydroxybenzaldehyde in 150 ml of ethanol, 1.08 ml (11.0 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 26.71 g of the desired compound (69.7% yield, pale yellow crystals).

Provenance & Evidence