Patent ID: 8722933

Claim:
A method for preparing a group 2 metal-containing polydentate β-ketoiminate represented by the following structure A: wherein M is a metal selected from the group consisting of Mg, Ca, Sr, and Ba; R 1 , R 3 , R 5 , and R 6 are independently selected from an alkyl group, a fluoroalkyl group, a cycloaliphatic group, and an aryl group; R 2 is selected from a hydrogen atom, an alkyl group, an alkoxy group, a cycloaliphatic group, and an aryl group; and R 4 is an alkyenyl bridge, wherein the method comprises: reacting M in a reaction mixture comprising a tridentate ketoimine ligand and an alcohol selected from the group consisting of methanol, ethanol, n-propanol, iso-propanol, n-butanol, sec-butanol, iso-butanol, n-pentanol, neo-pentanol, and combinations thereof, for a reaction time of from about 4 to about 48 hours to obtain the group 2 metal-containing polydentate β-ketoiminate at a yield greater than 80%, wherein the tridentate ketoimine ligand comprises a compound represented by the following structure B: wherein R 1 , R 3 , R 5 , and R 6 are independently selected from an alkyl group, a fluoroalkyl group, a cycloaliphatic group, and an aryl group; R 2 is selected from a hydrogen atom, an alkyl group, an alkoxy group, a cycloaliphatic group, and an aryl group; and R 4 is an alkyenyl bridge.