Heck arylation of allylic alcohols in molten salts

The Heck coupling of ArX (X=I, Br) with allylic alcohols, carried out at 80–120 °C in molten n-Bu4NBr using NaHCO3 as base and PdCl2 as catalyst without extra ligands, leads to the corresponding β-arylated carbonyl compounds. After extraction of the organic materials with diethyl ether, the ionic layer can be reused directly.