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PubMed · 1136821

Synthesis of dioxatricyclohexadecane--a new polycyclic ring system.

C Gmernicka-Haftek·W Wieniawski
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Bridged-Ring CompoundsChemical PhenomenaChemistryCrystallizationCyclohexanesIndicators and ReagentsMethodsOxidation-ReductionJournal Article

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C Gmernicka-Haftek, W Wieniawski. 1975. Synthesis of dioxatricyclohexadecane--a new polycyclic ring system.. https://pubmed.ncbi.nlm.nih.gov/1136821/

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PubMed2007

Reversible 2D pseudopolyrotaxanes based on cyclodextrins and cucurbit[6]uril.

In this paper, a pseudorotaxane (2) was synthesized by reaction of cucurbit [6]uril with 6-[(6-aminohexyl)amino]-6-deoxy-beta-cyclodextrin chloride. Subsequently, pseudorotaxanes 2 were further assembled to form a 2D pseudopolyrotaxane (3) through an alpha,omega-PPG2000 diamino polymer threading the cavities of cyclodextrins in 2, and the resulting pseudopolyrotaxane was comprehensively characterized by FT-IR, NMR, TG-DTA, elemental analysis, and transmission electron microscopy. Significantly, the 2D pseudopolyrotaxane can turn into a main-chain pseudopolyrotaxane in the presence of base, and then the addition of alpha-cyclodextrins may result in a reversible switch between two different 2D pseudopolyrotaxanes.

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