Catalytic oxidations using cobalt(II) complexes - Advances in Catalytic Activation of Dioxygen by Metal Complexes - page 321

latter is readily decomposed by metal ions to the t -butoxy radical, which is
then cleaved to acetone (see Figure 69).

In addition to isobutane, 2-methylbutane, 3-methylpentane and 2,3-
dimethylbutane

also undergo oxidation in the presence of the

system 200 .
The exposure of solid [Tp”Co(CO)] (Tp” = hydrotris(3-isopropyl-5-
methylpyrazolyl)-borate) to excess gas afforded the dioxygen complex
A close analog of this paramagnetic complex
(Tp' = hydrotris(3- tert -butyl-5-methylpyrazolyl)-borate) 202 decomposes in
solution to yield the doubly bridged and more reactive transient intermediate
which subsequently abstracts H-atoms from the

ligand (Figure 70) 203 .