C1, Br) was investigated to determine the sN2 reactivity of these dioxetanes and the product distribution of the hydroxylamine ether 2 adducts and the dioxetane fragmentation products 3. It was shown that the overall rectivity and the product distribution are strongly dependent on the substituents of the dioxetanes 1. Thus, the reactivity of the dioxetanes 1 toward morpholine was demonstrated to correlate with the electron-accepting propensity of the ...