Order in base was invesQgated using both TMEDA and Et3N. The former amine is dibasic while the laeer in monobasic. Both were invesQgated to deconvolute the order in reagent from order in acQve basic sites. For the reacQon of 4-bromoanisole, TMEDA iniQal concentraQons were varied from 0.15 to 1.2 M and iniQal rate data collected. Plofng lnkobs vs ln[TMEDA] gave an order of 0.46 (Fig. ).