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Beilstein J. Org. Chem. 2010, 6, No. 39, doi:10.3762/bjoc.6.39
Graphical Abstract
Scheme 1: Fluorinated molecular tweezers.
Scheme 2: Synthesis of non-fluorinated and fluorinated syn-bis-quinoxalines.
Figure 1: (a) Thermal ellipsoid image of the tweezer molecular 16c in the structure 16c · CH3CO2C2H5; thermal...
Figure 2: Electrostatic potential surfaces of 16a–c (Spartan 06 [41]: B3LYP/6-31G*//B3LYP/6-31G*; legend in kcal/...
Figure 3: 1H NMR spectra (CD2Cl2, 500 MHz) of 16c (host [black]) upon titration with N,N,N′,N′-tetramethyl-p-...