NacNac

diketones. These species can exist as a mixture of tautomers.^[1]

alkyl. To prepare 1,3-diketimines from bulky amines, e.g. 2,4,6-trimethylanilines, prolonged reaction times are required. 2,6-Diisopropylaniline

acetylacetonates, the steric properties of the coordinating atoms in NacNac⁻ ligands is adjustable by changes in the R substituent. Attachment to a metal center is usually carried out by initial deprotonation of HNacNac with n-butyllithium; the lithium derivative is then treated with a metal chloride to eliminate lithium chloride

acetylacetonate ligands. An intermediate class of ligands are derived from monoimino-ketones.^[5][6] The first Dipp-NacNac ligand was synthesized by Dr. Francis S. Mair in 1998.^[7]