Diethylsuccinoylsuccinate
Diethylsuccinoylsuccinate is an organic compound with the formula 2. A tetrasubstituted derivative of 1,4-cyclohexadiene, the compound is the enol tautomer of the corresponding cyclohexadione. It is produced by base-induced condensation of diethyl succinate:
Diethylsuccinylsuccinate is valued as a precursor to the quinacridone pigments. For example, it reacts with two equiv of anilines to give the diamines 2, which undergoes cyclization upon treatment with acid to give dihydroquinacridone.
When heated in the presence of acid, diethylsuccinoylsuccinate converts to 1,4-cyclohexanedione via hydrolysis of the esters followed by decarboxylation.
