HCID 10921303, compound → HCID 10881677, compound

Participants

Reaction Steps

A solution of 233 mg (1.34 mmol) of trans-cinnamaldehyde N,N-dimethylhydrazone was added to a solution of 4-methyl-1H-quinoline-2,5,8-trione (127 mg, 0.67 mmol) in dry chloroform (120 ml). The reaction was stirred under nitrogen at room temperature for 3 days, with periodical additions of solvent (100 ml each 12 h). A further amount of 166 mg (0.61 mmol) of the hydrazone was added, and the reaction was refluxed for 24 h and evaporated to dryness, and the residue was purified by silica gel chromatography using a gradient elution, starting with neat dichloromethane to dichloromethane/ethyl acetate (7:3), to yield 204 mg of the starting diene, 72 mg (35%) of 2 and 160 mg of 6-dimethylamino-4-methyl-1H-quinoline-2,5,8-trione.

Provenance & Evidence