Synthesis of 1,1′-diacetylferrocene dioxime esters

1,1′-Diacetylferrocene dioxime was synthesized by the reaction of 1,1′-diacetylferrocene with hydroxylamine. The dioxime reacts readily with carboxylic acids chlorides in the presence of pyridine with the formation of 1,1′-diacetylferrocene dioxime esters.