The syntheses of three original trifluoromethylated enaminones L1H-L3H, an unexplored type of ligand with possible multiple coordination centres, their redox properties and explorative coordination chemistry with copper(II) are presented. The ability of these ligands to coordinate copper(II) and then to form new mono- and dinuclear complexes is presented and discussed. The consequences of this metal coordination on redox properties are also explored.

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Ketones Q 0350Indium-Mediated Reduction of β-Aminovinyl Chloro-Difluoromethylated Ketones in the Presence of Heteroaryl Aldehydes. A Mild Entry to Novel Difluoromethylene Enaminone Derivatives. -Indium is found to be an effective reagent to promote coupling reactions of new β-aminovinyl chlorodifluoromethyl ketones such as (V), (IX) and (XII) with aromatic and heteroaromatic aldehydes. -(FENAIN, F.; MEDEBIELLE*, M.; ROCHER, M.; ONOMURA, O.; OKADA, E.; SHIBATA, D.; J. Fluorine Chem. 128 (2007) 10, Special Issue, 1286-1299; Inst. Chim. Biochim. Mol. Supramol., Univ. Claude Bernard Lyon, F-69622 Villeurbanne, Fr.; Eng.) -R. Staver 06-067