Journal ArticleDOI
Controlling factors in the synthesis of cucurbituril and its homologues.
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TLDR
A wide range of reaction conditions are examined that include the effects of acid type, acid concentration, reactant concentrations, and temperature to both probe the mechanism and optimize the yields of isolated cucurbit[n]urils, where n = 5-10.Abstract:
The acid-catalyzed synthesis of cucurbit[n]urils from formaldehyde and glycoluril is poorly understood. In this paper, we examine a wide range of reaction conditions that include the effects of acid type, acid concentration, reactant concentrations, and temperature to both probe the mechanism and optimize the yields of isolated cucurbit[n]urils, where n = 5−10. A mechanism for the formation of these cucurbit[n]urils is presented. Individual cucurbit[n]urils were unambiguously identified in reaction mixtures using ESMS and 13C NMR.read more
Citations
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The Inheritance Angle: A Determinant for the Number of Members in the Substituted Cucurbit[n]uril Family
TL;DR: Two new glycoluril diethers have been prepared, bearing strainedcyclobutene and cyclobutane rings at the fused junction of the two imidazolidinone rings, enabling the synthesis of cyclobutanocucurbit[5-8]uril, the largest member being the most significant achievement.
Journal ArticleDOI
Aggregation and thermal gelation of N-isopropylacrylamide based cucurbit[7]uril side-chain polypseudorotaxanes with low pseudorotaxane content
TL;DR: In this article, the authors designed side-chain polypseudorotaxanes with low pseudoretaxane content with the intention to emulate rod-coil block copolymers.
Journal ArticleDOI
New supramolecular interactions for electrochemical sensors development: different cucurbit[8]uril sensing platform designs.
TL;DR: The comparison of the electrochemical behaviour exhibited by the unmodified electrodes against various probes, with respect to that of each modified electrode, resulted in an appropriate method to choose among different strategies for the development of electrochemical sensors.
Journal ArticleDOI
Multistep assembling via intermolecular interaction between (bis)styryl dye and cucurbit[7]uril: Spectral effects and host sliding motion
Ekaterina Y. Chernikova,Sergey V. Tkachenko,Olga A. Fedorova,Olga A. Fedorova,Alexander S. Peregudov,Ivan A. Godovikov,Nikolay E. Shepel,Stela Minkovska,Atanas Kurutos,N. Gadjev,Todor Deligeorgiev,Yuri V. Fedorov +11 more
TL;DR: In this article, the host-guest interaction between bis(styryl)pyridinium dye (BSP ) and cucurbit[7]uril (CB[7]) was studied by means of optical spectroscopy, 1 H and 2D (COSY, ROESY, DOSY) NMR and electrospray ionization mass spectrometry in different microenvironment (aqueous or phosphate buffer solution).
Journal ArticleDOI
Host–guest complexes of some cucurbit[n]urils with the hydrochloride salts of some imidazole derivatives
TL;DR: In this article, the 1H NMR spectra analysis established a basic interaction model in which inclusion complexes with a host:guest ratio of 1:1 forms for the normal cucurbit[n]urils (n = 6,7,8; Q[6], Q[7, 8, Q[8]), with the hydrochloride salts of some imidazole derivatives N-(4-hydroxylphenyl)-imidazoles (g1), N-( 4-aminophenyl)-IMIDazole (g2), 2-
References
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Journal ArticleDOI
I. Ueber Condensationsproducte aus Glycoluril und Formaldehyd
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An efficient, enantioselective synthesis of the taxol side chain
TL;DR: Synthese de la chaine du taxol a partir du phenylacetylene avec comme etapes-cle une epoxydation asymetrique et la scission regioselective de l'epoxyde as mentioned in this paper.
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A Molecular Bowl with Metal Ion as Bottom: Reversible Inclusion of Organic Molecules in Cesium Ion Complexed Cucurbituril
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Cucurbituril as a ligand for the complexation of cations in aqueous solutions
TL;DR: The complex formation of the ligand cucurbituril with alkaline cations and other cations have been studied by means of solubility measurements in the presence of the salts in aqueous solutions at 25 °C.
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Host–guest complexes of cucurbituril with the 4-methylbenzylammonium lon, alkali-metal cations and NH4+
TL;DR: In this article, the existence of two different complexes of cucurbituril with 4-methylbenzylammonium ions was reported. But the 1 : 1 stability constants were not reported for the 2 : 1 complexes with different cations.