Importantly, an aged batch of Ni( 4-tBu stb)3 stored in the freezer (-18 °C) under air for ca. 6 months resulted in similar reactivity, highlighting the robustness of the protocol ). High yields could also be obtained with NiBr2(dme) when handled inside the glovebox (Table ). NiBr2(bipy)3, a complex successfully employed in electrocatalytic amination, 8b led to no reactivity in our system (Table , entry 6). Expectedly, Ni(COD)2 also afforded 3 in good yields when handling the pre-catalyst under inert atmosphere (Table ).