Pillar[<i>n</i>]arene–calix[<i>m</i>]arene hybrid macrocyclic structures

Liu, Zhaona; Li, Bing; Song, Leqian; Zhang, Huacheng

doi:10.1039/d2ra05118d

Cited by 1 publication

(1 citation statement)

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“…Covalent linking of several calixarene-type macrocycles is one of the modern synthetic strategies towards multitopic receptor systems, which possess unique properties that cannot be achieved using a single macrocyclic core [1][2][3][4][5][6][7][8][9][10][11][12][13]. In particular, the involvement of more than one linker into the connection of pairs of the cores is widely used in calixarene chemistry to obtain various multi(macrocycles) having tubular or semi-tubular shapes [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], which have special receptor properties provided by the new receptor holes formed during macrocyclization.…”

Section: Introductionmentioning

confidence: 99%

Building Triazolated Macrocycles from Bis-Propargylated Calix[4]arenes and Bis-Azidomethylated Azobenzene or Stilbene

Lentin,

Korniltsev,

Gorbunov

et al. 2023

Molbank

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Copper(I)-catalyzed azide-alkyne cycloaddition was employed to construct biscalixarene assemblies from the calix[4]arene dipropargyl ethers and 4,4′-bis-azidomethylated azobenzene or stilbene. Three bis(calixarenes) having the calix[4]arene cores linked to each other by pairs of (E)-azobenzene/stilbene units through four triazole groups were obtained as confirmed by NMR, HRMS and X-ray diffraction data. Nevertheless, the formation of larger macrocycles and polymeric/oligomeric products was found to be the major competing process that seriously limited the applicability of the one-step macrocyclization approach for the construction of photoresponsive biscalixarene assemblies linked by pairs of azobenzene/stilbene units.

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