Transition metal catalysts are widely used for direct and selective C-H functionalization . While late transition metals like palladium have been frequently used in experimental studies in the past , recent studies are shifting towards the use of catalysts containing manganese, iron, cobalt, nickel , etc. as they show comparable or even better reactivity than the late transition metal catalysts . Of the mid-row 3d metal catalysts, manganese catalysts for C-H fluorination look particularly attractive due to the non-toxicity of manganese, its relatively low cost, and environment friendly characteristics . Manganese enzymes found in nature can activate C-H bonds with high dissociation energy, which led to development of bioinspired molecular catalysts .