ATRP BINOL synthesis C-C coupling C-H activation C-H functionalisation C-H functionalization C–O activation DFT Fe-catalysis FeI/FeII/FeIII mechanism Grignard reagent Iron Kumada cross-coupling Research & information: general alcohols aldehyde alkenyl halides alkylation amidation amides amines aryl esters asymmetric catalysis asymmetric transfer hydrogenation ate iron(II) complex bifunctional catalyst bis-(aryl)manganese borylation carbene carboazidation