Dienyl radicals are free radicals that can be formed by the oxidation of polyunsaturated fatty acids.
These can combine with oxygen to form cis-trans lipid peroxyl radicals.
[1] Benzene can be oxidized using a photocatalyst, QuCN+ to produce benzene radical cation.
This benzene radical cation can produce a dienyl radical through nucleophilic reagent.
This article about medicinal chemistry is a stub.