It is well-known that radical rearrangements involving migrations from carbons in position 1 to carbons in position 4 are seldom~ bserved. l-~ Krusic and Kochi suggested: however, that a 1, 4-hydrogen shift might occur in the p-methoxyethyl radical; this rearrangement would in fact explain the observation of the ESR spectrum of CH20CH2CH3 when cyclopropane solutions of P-methoxypropionyl peroxide are photolyzed within the cavity of an ESR ...