Toluene → HCID 86588863, compound

Participants

Reaction Steps

A mixture of toluene (80 mL), piperidine (380 μL), acetic acid (380 μL), 3-(1,4,4,6-Tetramethyl-2-oxo-1,2,3,4-tetrahydro-quinolin-7-yl)-4-trifluoromethoxy-benzaldehyde (7.5 g, 19.16 mmol) and a 3-alkyl—thiazolidine-2,4-dione such as 3-Methyl-thiazolidine-2,4-dione (19.16 mmol) is heated at reflux overnight. The reaction mixture is cooled to room temperature, diluted with ethyl acetate and is washed with water and brine, dried over MgSO4. The residue is recrystallized to afford 3-methyl-5-[3-(1,4,4,6-tetramethyl-2-oxo-1,2,3,4-tetrahydro-quinolin-7-yl)-4-trifluoromethoxy-benzylidene]-thiazolidine-2,4-dione.

Provenance & Evidence