Activation of HOOH by Lewis acids

100% represents one substrate oxygenation or dehydrogenation per HOOH added. For dioxygenations, 100% represents one substrate converted per two HOOH added. 

PhCH-CHMe dioxane (dimer) + [PhCH(O) + MeCH(O)] PhCHs PhCHaOH [+PhCH(O), CHsPWOH)] 

100% represents one substrate dehydrogenation or oxygenation per ROOH added to the reaction system. In the case of HOOH all of it was consumed, either by 

These numbers represent a crude measure of the relative extent of reaction for the adduct with substrate and HOOH. 

In the absence of substrate, the combination of Fe(n) and HOOH in dry MeCN results in the latter s rapid disproportionation to O2 and H2O, but the Fe(n) remains unoxidized. Similar combinations of Fe(n) with f-BuOOH or m-ClPhC(O)OOH do not promote their rapid disproportionation, but facilitate a slow hydrolysis process (ROOH + H2O - ROH + HOOH, assayed for ROH). 

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