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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Interaction Between Cucurbit[8]uril and HCl Salts of 3,4,7,8-Tetramethyl-1,10-phenanthroline
TL;DR: In this article, two different inclusion orientation isomer complexes of cucurbit[8]urils (Q[8], host) and protonated 3,4,7,8-tetramethyl-1,10-phenanthroline (guest) were observed.
Journal ArticleDOI
Templating Effects in the Dynamic Chemistry of Cucurbiturils and Hemicucurbiturils
Sandra Kaabel,Riina Aav +1 more
Journal ArticleDOI
Adaptive Se-Te Metathesis Controlled by Cucurbituril-Based Host-Guest Interaction.
TL;DR: C cucurbituril-based host-guest interaction was embedded into the dynamic metathesis between diselenide and ditelluride to establish an equilibrium-adaptive system to regulate the reactivity and equilibrium of dynamic reaction.
Journal ArticleDOI
Probing Reversible Guest Binding with Hyperpolarized 129Xe-NMR: Characteristics and Applications for Cucurbit[n]urils.
Jabadurai Jayapaul,Leif Schröder +1 more
TL;DR: This review summarizes recent achievements with chemical exchange saturation transfer (CEST) detection of efficiently exchanging Xe in various CB[n]-based supramolecular systems and discusses applications such as displacement assays for enzyme activity detection and rotaxanes as emerging types of Xe biosensors.
Journal ArticleDOI
Supramolecular System of Aminoacids and Cucurbit[7]uril: NMR Studies in Solution
TL;DR: In this article, the nuclear magnetic resonance (NMR) studies of protonated aminoacids (AAH+ = ValH+, IleH+, AsnH+, SerH+, ThrH+) with cucurbit[7]uril (CB[7]) in solution were investigated for different experimental conditions.
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.