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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Molecular Dynamics of Methyl Viologen-Cucurbit(n)uril Complexes in Aqueous Solution
TL;DR: In this article, molecular dynamics simulations have been used to study the dynamics of the inclusion complexes of methyl viologen (MV) with cucurbit[n]uril, CBn (where n = 6, 7, and 8) in aqueous environments.
Journal ArticleDOI
Cucurbit[n]urils as excipients in pharmaceutical dosage forms
TL;DR: Native, unfunctionalised cucurbit[n]uril-based dosage forms have shown enormous potential as excipients in medical formulations for improving drug delivery, with specific benefits including improved drug stability, solubility, controlled or triggered release, taste masking, inducing drug pKa shifts and as antidotes.
Journal ArticleDOI
Multiple Efficient Fluorescence Emission from Cucurbit[10]uril-[Cd4Cl16]8--Based Pillared Diamond Porous Supramolecular Frameworks.
TL;DR: This work exemplifies a facile approach for the construction of macrocycle-based porous frameworks but also offers a simple, lower cost, yet still highly efficient means of preparing multi-emitting, including white-light-emitter, solid luminescent materials.
Journal ArticleDOI
Density functional study of cucurbituril and its sulfur analogue
TL;DR: In this paper, the molecular and electronic structures of cucurbituril and its sulfur analogue, thia-cucurbiturus (TCB), have been investigated by means of density functional theory (DFT) calculations.
Journal ArticleDOI
Detection of Isomeric Microscopic Host–Guest Complexes. A Time-Evolving Cucurbit[7]uril Complex
TL;DR: The formation of inclusion complexes between the cucurbit[7]uril host and a cationic guest containing ferrocenylmethyl and adamantyl residues connected to an ammonium nitrogen initially leads to an ~1:1 mixture of two isomeric microscopic complexes, which evolves as a function of time toward the thermodynamically stable mixture, dominated by the adamantyl-included complex.
References
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Journal ArticleDOI
I. Ueber Condensationsproducte aus Glycoluril und Formaldehyd
Journal ArticleDOI
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.