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Beilstein J. Org. Chem. 2018, 14, 1846–1853, doi:10.3762/bjoc.14.158
Graphical Abstract
Scheme 1: Diazide and dialkyne building blocks used in this study.
Scheme 2: Synthesis of Cat-1 by CBAAC. aAssembly yield by HPLC; bisolated yield as PF6− salt.
Scheme 3: Synthesis of [3]catenanes by CBAAC. aAssembly yield by HPLC; bisolated yield by precipitation as PF6...
Figure 1: 1H NMR (500 MHz, D2O, 298 K) of Cat-2. The signal at ca. 8.3 ppm is the residual formate from prepa...
Figure 2: (a) ESIMS, (b) HRMS, and (c) MS2 spectrum (parent ion at m/z = 887.8) of Cat-2.
Scheme 4: Synthesis of the [4]catenane Cat-11. aAssembly yield by HPLC; bisolated yield by preparative HPLC.