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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Journal ArticleDOI
A novel one-dimensional supramolecular inclusion compound linked by hydrogen bonding interaction
TL;DR: In this paper, the cucurbit[6]uril host and its tetrahydrofuran (THF) guest in the Pmn21 crystal lattice were analyzed and the crystal data and refinement parameter for the title compound were: a = 14027(3), b = 11807(3, c = 16760(4) A, V = 27747(9) A3 For Z = 2 and Mw = 152952, the calculate density Dcal = 1825g/cm3 Hydrogen bonding interaction assembled the adjacent {[La(
Journal ArticleDOI
Chloroaqua Complexes [M3S4(H2O)9−x Clx](4−x)+ (M = Mo, W; x = 4, 6, 7) and Their Supramolecular Compounds with Cucur[8]uril
Elena V. Chubarova,Denis G. Samsonenko,H. G. Platas,F. M. Dolgushin,Andrey V. Gerasimenko,Maxim N. Sokolov,Zoya A. Starikova,M. Yu. Antipin,Vladimir P. Fedin +8 more
TL;DR: In this article, trigonal cluster chloroaqua complexes with cucurbit[8]uril were synthesized by slowly evaporating HCl solutions of chalcogenides heterometallic cubane cluster complexes of molybdenum and tungsten with cucurusuril in air; the complexes were characterized by X-ray diffraction analysis.
Journal ArticleDOI
Supramolecular assemblies of moroxydine hydrochloride and cucurbit[7,8]uril
TL;DR: In this paper, the morpholino group of moroxydine hydrochloride (ABOB) with cucurbit[n]urils (n = 7 or 8) was investigated using 1H NMR spectroscopy, Quadrupole-Time of Flight mass spectrometry (Q-TOF), UV absorbance spectrophotometry, isothermal titration calorimetry (ITC), and X-ray crystallography.
Patent
Introverted CB[n] compounds
Kimoon Kim,Sang-Kyu Park,Young Ho Ko,Hyunuk Kim,Youngkook Kim,Narayanan Selvapalam,Lyle Isaacs,Simin Liu +7 more
TL;DR: Inverted cucurbituril compounds have at least one pair of hydrogen atoms protruding into an internal molecular cavity thereof as discussed by the authors, and they are known as inverted cucurbits.
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.
Journal ArticleDOI
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.