A kinetic study on the activating power of lithium ions on the porphyrin metallation by lanthanides and on a microwave specific effect

René Faure , Robert Granet (1) , Pierre Krausz (1)

1 LCSN - Laboratoire de Chimie des Substances Naturelles

A kinetic study of the lithium ion activating effect on porphyrin metallation has been investigated using monohydroxy-tritolyl porphyrin and the lanthanides erbium and gadolinium in dimethylacetamide. The powerful, concentration-dependent, catalytic effect of lithium, observed in both cases with classical heating was considerably enhanced under microwave irradiation at the same temperature thus underscoring a specific microwave effect.

Mots clés: Porphyrins; Lanthanides; Lithium ions; Metallation; Microwaves; Kinetics

Domaines: Chimie; Chimie organique

René Faure, Robert Granet, Pierre Krausz. A kinetic study on the activating power of lithium ions on the porphyrin metallation by lanthanides and on a microwave specific effect. Comptes Rendus. Chimie, 2009, 12 (3-4), pp.506-510. ⟨10.1016/j.crci.2008.06.005⟩. ⟨hal-00697261⟩