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Beilstein J. Org. Chem. 2019, 15, 1339–1346, doi:10.3762/bjoc.15.133
Graphical Abstract
Scheme 1: CTV and chiral CTV derivatives.
Scheme 2: The two enantiomeric crown isomers of chiral CTV 1 and its saddle isomer 1-S.
Scheme 3: Synthesis of CTV 1.
Figure 1: a) Chromatogram of an analytical separation of (rac)-1 on a CHIRALPAK IB column as the stationary p...
Figure 2: a) Chromatogram of the analytical separation of (rac)-1 (CHIRALPAK IB, 100% MeOH, 293 K, flow rate:...
Figure 3: a) 1H NMR spectrum of the neat crown isomers of (rac)-1 in CD3OD (400 MHz, 298 K); b) 1H NMR spectr...
Figure 4: Chromatograms of the analytical separations (CHIRALPAK IB, acetonitrile/water 40:60, 293 K, flow ra...
Figure 5: The mole fractions obtained in the racemization experiment plotted against the time, with black tri...