Three-component coupling (3CC) of phthalhydrazide, aldehydes and barbituric acid has been accomplished in the presence of 15 mol % FeCl3 under solvent-free conditions to afford the corresponding synthesis of pyrimidin-4-yl)-2,3-dihydrophthalazine-1,4-diones in good yields. This method provides high yields, shorter reaction time and mild reaction conditions.

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