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Abstract |
Trimethoxyl[2.2.3]metacyclophanes 5 and 8 were prepared and it was proved by ^1H-NMR spectra that the conformational change between 2,3-alternate and the cone conformers. The comparison between the dy...namic NMR spectra of 8 and the computer-simulated spectra led to the energy barrier (ΔG^‡_<298°K>: 78.67±4.02 KJ mol^<-1>) from 2,3-alternate to cone conformers of 8.show more
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