PEG as an alternative reaction medium in metal-mediated transformations

Poly(ethylene glycol)s (PEGs) are an interesting environment-friendly alternative to classical solvents. Their combination with metals and metallic salts provides powerful reaction systems for a wide variety of transformations. This study presents an overview of the various reactions developed in PEG together with a metallic species. The influence of PEG on the reaction course, the stabilizing effects of the polymer on the metals and the recycling possibility are reported for the various metallic elements of the periodic table.

► The use of PEG as solvent for metal based-chemistry is decribed.
► PEG can be used with a wide variety of metals.
► Reactivity and purification is facilitated in many cases.
► PEG may act as a stabilizer of metallic species.