The order in 4-bromoanisole was invesQgated for six different concentraQons across a 0.5 M to 1.5 M range. VTNA is consistent with a zero-order fit (Fig. ). For 0.5 M and 0.81 M kineQc runs the profiles deviate from the fit as the reacQon progresses due to full consumpQon of the substrate when present at lower concentraQons. KineQc runs using 4bromobenzotrifluoride using four different concentraQons across a 0.5 M to 1.5 M range also fit zeroorder behavior in substrate. The possibility of product inhibiQon was invesQgated for 4-bromoanisole through spiking of reacQon mixtures with the corresponding aldehyde and TMEDA•2HBr and comparing against a control sample. Time-shived kineQc profiles again provide excellent overlap, suggesQng that inhibiQon by either the product or amine-salt byproduct does not occur in this system (Fig. ).