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Electrophilic aromatic substitution reactions of compounds with Craig-Möbius aromaticity
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Electrophilic aromatic substitution reactions of compounds with Craig-Möbius aromaticity
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Electrophilic aromatic substitution reactions of compounds with Craig-Möbius aromaticity
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Journal Article
Electrophilic aromatic substitution reactions of compounds with Craig-Möbius aromaticity
2021
Overview
Electrophilic aromatic substitution (EAS) reactions are widely regarded as characteristic reactions of aromatic species, but no comparable reaction has been reported for molecules with Craig-Möbius aromaticity. Here, we demonstrate successful EAS reactions of Craig-Möbius aromatics, osmapentalenes, and fused osmapentalenes. The highly reactive nature of osmapentalene makes it susceptible to electrophilic attack by halogens, thus osmapentalene, osmafuran-fused osmapentalene, and osmabenzene-fused osmapentalene can undergo typical EAS reactions. In addition, the selective formation of a series of halogen substituted metalla-aromatics via EAS reactions has revealed an unprecedented approach to otherwise elusive compounds such as the unsaturated cyclic chlorirenium ions. Density functional theory calculations were conducted to study the electronic effect on the regioselectivity of the EAS reactions.
Publisher
National Academy of Sciences
