| abstract |
Process for the preparation of a mixture of alkyl pentenoates by carbonylation of butadiene in the liquid phase in the presence of an alkanol, carbon monoxide, palladium and a bidentate organic phosphorus, antimony or arsenic ligand, the bidentate ligand having as bridging group a bis( eta -cyclopentadienyl) coordination group of a transition metal. Preferably the transition metal is iron. |