Tropo(thio)ne-embedded homoHPHACs and their dications were synthesised by an electrophilic annulation of secoHPHAC and successive oxidation. C NMR spectra of the dications represented global 22π homoaromaticity homoconjugation, while alkylation of a thiocarbonyl-bridged homoHPHAC produced a 24π antiaromatic monocation.
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| http://dx.doi.org/10.1039/d1cc07152a | DOI Listing |
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