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Beilstein J. Org. Chem. 2019, 15, 2486–2492, doi:10.3762/bjoc.15.241
Graphical Abstract
Scheme 1: Structures of tetraisobutylpyridine[4]arene 1 and tetraisobutylresorcin[4]arene 2.
Figure 1: Spectra of 1 + Me4NPF6 1:3 in acetone in a) (+)ESI-MS and b) (−)ESI-MS. Insets showing arrival time...
Figure 2: (+)ESI-MS profile spectrum of the mixture of 1, 2 and TMAPF6 in acetonitrile (20 µM, 1:1:1). Inset ...
Figure 3: Calculated ESP surfaces (in au) superimposed on the total electron density (0.004 au) for 1 and 2: ...