Iron-Catalyzed 1,4-Addition of α-Olefins to Dienes

A new intermolecular, stereo- and regioselective iron-catalyzed 1,4-addition of alpha-olefins to 1,3-dienes using as low as 1 mol % of an iminopyridine-ferrous chloride complex was developed. Importantly, both double bonds of the linear 1,4-diene addition products are obtained with absolute stereocontrol.