2. Important Features of Radical Reactivity

Radicals can promote an enormously diverse array of chemical transformations that are of relevance not only to organic and polymer synthesis, but to combustion,56 atmospheric57 and biological58 chemistry as well. Free radicals can react with a variety of different substrates, often forming multiple products and so controlling their chemoselectivity can be problematic. These reactions include bimolecular radical combination and disproportionation, transfer (substitution) and addition reactions with spin-paired molecules, or fragmentation and ring opening. Arguably, radical processes are more complex and less intuitive than their ionic counterparts, which is the predominant reason why radical reactions ...

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