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Beilstein J. Org. Chem. 2019, 15, 633–641, doi:10.3762/bjoc.15.59
Graphical Abstract
Scheme 1: Synthesis of the propargyloxy calixarene Ca.
Scheme 2: Synthesis of polyaminoazides from polyamines.
Scheme 3: Reaction of 1,3-dibromopropane (4) with sodium azide.
Scheme 4: Formation of the 1,3-oxazinan-2-one ring.
Scheme 5: Formation of the product at m/z 382.2765 u.
Scheme 6: Formation of the components of mixture I.
Figure 1: FTIR spectra (liquid) of mixture I (red) and mixture II (blue).
Figure 2: FTIR spectra (nujol) of Ca (red), CaNS-I (blue) and CaNS-II (green).
Figure 3: CP-MAS NMR spectra of CaNSs.
Figure 4: Structures of guests 6–15.