A new, three-component cobalt-catalysed domino reaction leading to ferrocenyl-tetrahydro-4(1H)-pyrimidinone derivatives

► Novel ferrocenyl-tetrahydro-4(1H)-pyrimidinones were obtained and characterised. ► A Co-catalysed domino reaction of imines, CO and ethyl diazoacetate was applied. ► Possible mechanisms are discussed. ► The geometry of products was determined by 2D NMR techniques. ► Some structures were confirmed by X-ray crystallography.