PROCESS FOR THE PREPARATION OF A 1,2-DIOXIME

摘要

The invention relates to a process for the preparation of a 1,2-dioxime of the general formula A-C(=NOH)-C(=NOH)-R, wherein A represents an aromatic group and R a hydrocarbyl group or a hydrogen atom, which process comprises the reaction of hydroxylamine with one or more hydroxyiminoketones of formula A-C(=O)-C(=NOH)-R or of formula A-C(=NOH)-C(=NOH)-R in the presence of a nickel compound forming a complex with the 1,2-dioxime.