Radical trifluoromethylation of aryl N,N-dimethyl hydrazones using TBAI as an
initiator and Togni’s
reagent as a trifluoromethyl radical source is described. Cascades
proceed via electron-catalysis; this approach is generally more applicable
to hydrazone perfluoroalkylation using perfluoroalkyl iodides as the
radical precursors in combination with a base under visible-light
initiation.
In this paper, the application of the double radical nucleophilic aromatic substitution (SRN1) in various dihalogenated, mostly diiodinated, π-conjugated systems as a tool for qualitatively estimating their π-conjugation is described.
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