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Allylic RadicalsAllylic radicals form readily because they are more stable than ordinary primary, secondary, tertiary, or vinyl radicals1
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Chaper 152Allylic Radicals•Stabilized by resonance.•Radical stabilities: 1°< 2°< 3°< 1°allylic.•Substitution at the allylic position competes with addition to double bond.•To encourage substitution, use a low concentration of reagent with light, heat, or peroxides to initiate free radical formation.