Very simple and ecofriendly methods have been developed for the synthesis of the tetraketones from 5,5- Dimethylcyclohexane-1,3-dione and aromatic aldehydes using a variety of catalyst which included sodium bicarbonate, sodium sulfate, magnesium sulfate, sodium chloride, sodium lauryl sulfate, barium chloride, polyethyleneglycol and alumina in an aqueous medium at room temperature in good to excellent yields with and without the assistance of microwaves.
