A series of methyl 2,7,7-trimethyl-5-oxo-4-aryl1,4,5,6,7,8-hexahydroquinoline-3-carboxylate were synthesized by the reaction of aromatic aldehydes,dimedone and methyl acetoacetate using ammonium acetate as catalyst in glycol under microwave irradiation with 82%～98% yields in 4～6 min.

A series of 9-arylpolyhydroacridine derivatives have been synthesized by reaction of arylmethylidenecyanoacetate with dimedone in HOAc in the presence of ammonium acetate,and the structures were characterized by IR,and 1HNMR.