Acetic Acid → HCID 21918729, compound

Participants

Reaction Steps

5 g of 3,5-di-t-butyl-4-hydroxybenzaldehyde (21 mmol) and 2.95 g of para-nitroaniline (21 mmol) are dissolved in 50 ml of anhydrous toluene. 0.5 ml of glacial acetic acid is added and the whole is taken to reflux for 24 hours. Then 1.96 g of mercaptoacetic acid (21 mmol) is added to the medium and reflux is continued for another 24 hours. After the reaction mixture has returned to ambient temperature, it is washed with water (3 times 30 ml). After decantation. the organic phase is dried over sodium sulphate and the solvent is evaporated off under reduced pressure. The residue is purified on silica gel in an ethyl acetate/heptane mixture (1/4) and 1.33 g of pure 2-(3,5-di-t-butyl-4-hydroxyphenyl)-3-(4-nitrophenyl)-4-thiazolidinone is obtained in the form of a colourless oil (15%).

Provenance & Evidence