By combining the Lewis acid Zn(C6F5)2with nucleophilic diarylzinc (ZnAr2) reagents, we report the atom-efficient arylation ofN-tosylimines under mild conditions. Mechanistic studies through the isolation of key intermediates reveal how the two zinc species act cooperatively to activate the imine substrate and regenerate the ZnAr2reagent, enabling a limiting 50 mol% to be employed.