The reaction of maleic anhydride with dimedone
Abstract
Two compounds arising from the acid-catalysed condensation of maleic anhydride with dimedone are 3-carboxymethyl-5,6,7,8-tetrahydro-4-hydroxy-7,7-dimethyl-5-oxonaphthalene-1,2-dicarboxylic anhydride (4) and α-(4,4-dimethyl-2,6-dioxocyclohexyl)succinic acid (8).