Photoinduced Electron Transfer Reactions in Heterocyclic Chemistry

Abstract

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Selectivity in Radical Cation Cycloadditions

“…One possible reason is the lack of predictability of selectivity due to various competing mechanisms as well as the generally low familiarity of many organic chemists with the selectivity determining factors. This review complements the previous, mechanistically oriented reviews [9][10][11]17,18,[58][59][60] in addressing some of these questions by providing an overview of patterns governing the selectivity that has been observed in ET catalyzed cycloadditions. Using selected literature examples rather than a comprehensive overview, we will discuss the experimental findings and provide an overview of the factors determining them.…”

Rationalized design, synthesis and pharmacological screening of amino acid linked spiro pyrrolidino oxyindole analogs through environment friendly reaction

“…[ 15 ] Great efforts have, therefore, been made to discover and optimize new reactions/methodologies to facilitate the construction of heterocycles. [ 16 17 ] The extensive use of heterocyclic compounds may be recognized to a huge range of reaction types available that aid subtle structural as well as physicochemical modifications in the heterocyclic compounds. [ 18 19 ] Thus endeavor toward the understanding of interactive potency of heterocyclic compounds are extracting significance, especially expedient synthesis leading to N-heteoaromatics, which are potent inhibitors of lymphocyte apoptosis and often form the framework of deoxyribonucleic acid intercalating agents.…”

The Aromatic Carbon–Carbon ipso‐Substitution Reaction

“…[35] This ipso-substitution reaction can be likewise extended to heteroarenes (e.g., cyanopyridines or cyanopyrazines). [36] A variation of these photoinduced ipso-substitution reactions is the photo-ROCAS (radical olefin combination aromatic substitution) reaction, which allows the preparation of more elaborated cyanoarenes by adding an electron-poor olefin to the reaction mixture.…”