Diastereoselective synthesis of a [2]catenane from a pillar[5]arene and a pyridinium derivative.
نویسندگان
چکیده
We synthesized a new [2]catenane composed of a pillar[5]arene ring and a pyridinium derivative using ring-closing metathesis.
منابع مشابه
A [2]rota[2]catenane, constructed from a pillar[5]arene-crown ether fused double-cavity macrocycle: synthesis and structural characterization.
A topologically novel [2]rota[2]catenane containing both a pillar[5]arene-imidazolium based [2]rotaxane subunit and a crown ether-tetracationic cyclophane based [2]catenane one was designed and constructed. The structure of the [2]rota[2]catenane was thoroughly characterized by NMR spectra, MS spectrometry and single crystal X-ray diffraction analysis.
متن کاملThermally responsive shuttling behavior of a pillar[6]arene-based [2]rotaxane.
A [2]rotaxane constructed from a per-ethylated pillar[6]arene as a wheel and a pyridinium derivative as an axle was prepared. The wheel segment of the per-ethylated pillar[6]arene moved from one station to another along the axle as a result of thermal stimuli.
متن کاملSynthesis of a cationic water-soluble pillar[6]arene and its effective complexation towards naphthalenesulfonate guests.
A novel positively charged pillar[6]arene derivative bearing twelve pyridinium moieties has been synthesized. Its efficient complexation behavior towards two anionic naphthalenesulfonate substrates in aqueous media is described.
متن کاملDiastereoselective synthesis of meso-pillar[6]arenes by bridging between hydroquinone units in an alternating up-and-down manner.
We report the first synthesis of bridged pillararenes. Meso-form pillar[6]arenes were diastereo-selectively formed by bridging units of a per-hydroxylated pillar[6]arene in an alternating up-and-down manner with dialkyldichlorosilanes.
متن کاملComplex interactions of pillar[5]arene with paraquats and bis(pyridinium) derivatives.
The complexation behavior of a series of paraquats (G1.2PF(6)-G5.2PF(6)) and bis(pyridinium) derivatives (G6.2PF(6)-G14.2PF(6)) with pillar[5]arene (P5A) host has been comprehensively investigated by (1)H NMR, ESI mass and UV-vis absorption spectroscopy. It is found that P5A forms 2 : 1 external complexes with N,N'-dialkyl-4,4'-bipyridiniums (G1-G4.2PF(6)); while it forms 1 : 1 pseudorotaxane-t...
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ورودعنوان ژورنال:
- Chemical communications
دوره 50 22 شماره
صفحات -
تاریخ انتشار 2014