O H

CH3CCH2CH3 CH3 H" ^CCH2CH3

Scission to produce the larger alkyl radical dominates. For example, in the case of the 2-butoxy radical in Eq. (28), path (b) dominates over path (a) by more than two orders of magnitude (see Atkinson, 1997b, and references therein).

• If the alkoxy radical has four or more carbon atoms and can form a 6-membered transition state via the alkoxy oxygen abstracting H from a C-H bond, an intramolecular isomerization may occur:

i i ch3

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