Ter/-butoxy radicals

Ter-butoxy radical is known to be very reactive towards allylic hydrogen abstraction Eq. (2), but a fraction undergoes the 0 scission reaction (1) ... 

Table 7. Retetive rate constants for the reactions of ter-butoxy radicals with iso-octane and model compounds simulatiiig different conju ted dienic unsaturations ...

Other Photofragmentations - Photodissociation of tert-huty hydroperoxide at 266 nm gives OH radicals with dynamics which are similar to those found for OH from H2O2, and which are consistent with dissociation via a repulsive excited state. Rates of p-scission of the ter/-butoxy radical to acetone and methyl radicals have been determined in flash-photolysis experiments by monitoring its transient UV absorption and its laser-induced fluorescence. ... 

The model compounds (III,a), (V,f), (VI,a) and NB described in Sect. B.l h) and the kinetic results obtained from the attack of t-butoxy radical on isooctane solutions of these products have been used to clarify some aspects of the mechanism of ter-polymer cross-linking. The reactivity of isooctane, expressed as the hydrogen abstraction reaction by t-butoxy radical relative to the scission rem tion of (CH3)300 (see k2/ki values in Table 7), has bear converted into the rate cmstant for the H abstraction from ethylene-propylene units (kj) Iqy means of Pryor s... 

---