Impact of Adding <i>N</i>‑hexylamine\nto Nickel Metallophotoredox C–N Coupling to Form Diarylamines

The mechanistic understanding of how alkylamines impact\nNi-metallophotoredox\nC–N coupling to form diarylamines remains unclear. In this\nstudy, 12-alkylamines were evaluated as additives to determine their\neffects on the synthesis of diarylamines in a flow photochemical system.\nNotably, <i>n</i>-hexylamine demonstrated the most significant\npromotional effect. Spectroscopic studies and experimental data reveal <i>n</i>-hexylamine substitutes DABCO as a Ni catalyst ligand,\nenhancing yields particularly in sterically hindered arylamines.