Functional model oxygenations by nonheme iron complexes - Advances in Catalytic Activation of Dioxygen by Metal Complexes - page 180

substrates, rather than supporting the hydrogen atom abstraction mechanism

(Scheme 1).

acid-dependent dioxygenases were studied by Ha et al ., 176 Funabiki
et al . 177, 178 and Que et al .. 179-185 It is proposed that the latter oxygenation involves
the binding of to Fe(II), followed by substrate binding, and binding to
afford a Fe(III) superoxide species as shown in Scheme 2. Model studies are mostly
limited to characterization of complexes, which are inactive for

oxygenation.