149525-65-5Relevant articles and documents
Shape-Persistent [4+4] Imine Cages with a Truncated Tetrahedral Geometry
Lauer, Jochen C.,Zhang, Wen-Shan,Rominger, Frank,Schr?der, Rasmus R.,Mastalerz, Michael
, p. 1816 - 1820 (2018)
The synthesis of shape-persistent organic cage compounds is often based on the usage of multiple dynamic covalent bond formation (such as imines) of readily available precursors. By careful choice of the precursors geometry, the geometry and size of the resulting cage can be accurately designed and indeed a number of different geometries and sizes have been realized to date. Despite of this fact, little is known about the precursors conformational rigidity and steric preorganization of reacting functional groups on the outcome of the reaction. Herein, the influence of conformational rigidity in the precursors on the formation of a [4+4] imine cage with truncated tetrahedral geometry is discussed.
Metal triggered fluorescence sensing of citrate using a synthetic receptor
Cabell, Larry A.
, p. 315 - 323 (2001)
A metal containing fluorescent chemosensor was designed, synthesized, and studied for the quantification of citrate in common beverages. The sensor consists of Cu(II) bound by a 1,10-phenanthroline ligand which is attached to a bis(aminoimidazolium) recep
A new tripodal receptor for molecular recognition of monosaccharides. A paradigm for assessing glycoside binding affinities and selectivities by 1H NMR spectroscopy
Vacca, Alberto,Nativi, Cristina,Cacciarini, Martina,Pergoli, Roberto,Roelens, Stefano
, p. 16456 - 16465 (2004)
A new tripodal receptor for the recognition of monosaccharides is described. The prototypical host 1 features a 1,3,5-substituted 2,4,6-triethylbenzene scaffold bearing three convergent H-bonding units. The binding ability of the t-octyl derivative 1a tow
Synthesis and coordination chemistry of a tris(benzene-o-dithiolato)- functionalized ligand as a siderophore analog
Ruppel, Susanne,Schulte To Brinke, Christian,Hahn, F. Ekkehardt
, p. 551 - 556 (2013)
As a siderophore analog, the tripodal tris(benzene-o-dithiol)- functionalized ligand H6-5, has been synthesized in four steps including the reaction of 1,3,5-(triaminomethyl)-2,4,6-triethylbenzene and 2,3-bis(isopropylmercapto)benzoyl chloride followed by removal of the S-protecting groups. Reaction of compound H6-5 with [Ti(OPr) 4] in the presence of (NEt4)Cl leads to the formation of complex (NEt4)2[Ti(5)] featuring three bidentate benzene-o-dithiolato donors from one ligand coordinated to the metal center. An X-ray diffraction structure analysis with crystals of (NEt4) 2[Ti(5)]·DMF has shown that the coordination geometry at the metal center is best described as distorted trigonal-prismatic with a twist angle of φav = 18:5°.
Hydrogen and halogen bonding in the crystal structure of a 1,3,5-substituted 2,4,6-triethylbenzene consisting of three phenanthroline units
Mazik, Monika,Hartmann, Andre,Jones, Peter G.
, p. 458 - 463 (2010)
1,3,5-Tris-[N-(l,10-phenanthrolin-2-yl-carbonyl)aminomethyl]-2,4, 6-triethylbenzene (1) was synthesized, and its crystal structure was examined. X-ray structural analysis revealed the presence of hydrogen-bonded water molecules as well as hydrogen- and halogen-bonded chloroform, molecules in the crystal structure of 1. The 1-H2O-CHCl3 associate is stabilized, by N-H...O, O-H...N, O-H...O, C-H...O, and C-H...Cl hydrogen bonds as well as C-Cl...O, C-Cl...π, and C-Cl...Cl interactions. Particularly short C-H...O hydrogen bonds with H...-O and C...O distances of 1.89 and 2.94 , respectively, are observed in the crystal structure. The H...O distance is approximately 30% shorter than the sum of the van der Waals radii of involved atoms.
Synthesis of a new tripodal chemosensor based on 2,4,6-triethyl-1,3,5- trimethylbencene scaffolding bearing thiourea and fluorescein for the chromo-fluorogenic detection of anions
Moragues, María E.,Santos-Figueroa, Luis E.,ábalos, Tatiana,Sancenón, Félix,Martínez-Má?ez, Ramón
, p. 5110 - 5113 (2012)
A tripodal receptor containing thiourea as binding site and fluorescein as signalling subunit has been designed, synthesized and used for the colorimetric detection of basic anions in DMSO solutions.
Disposable receptor-based optical sensor for nitrate
Capitan-Vallvey, Luis Fermin,Arroyo-Guerrero, Eduardo,Fernandez-Ramos, Maria Dolores,Santoyo-Gonzalez
, p. 4459 - 4466 (2005)
A new optical absorption-based disposable sensor for nitrate is described. The nitrate-sensitive element is a bicyclic cyclophane receptor next to a suitable pH-sensitive lipophilic dye immobilized in a plasticized polymeric membrane. The rigid amide-base
Transformation of Imine Cages into Hydrocarbon Cages
Schick, Tobias H. G.,Lauer, Jochen C.,Rominger, Frank,Mastalerz, Michael
, p. 1768 - 1773 (2019)
In contrast to organic cages which are formed by exploiting dynamic covalent chemistry, such as boronic ester cages, imine cages, or disulfide cages, those with a fully carbonaceous backbone are rarer. With the exception of alkyne metathesis based approac
A synthetic receptor selective for citrate
Metzger,Lynch,Anslyn
, p. 862 - 865 (1997)
Applied molecular recognition strong and selective binding of citrate in highly competitive media such as water and orange juice is reported. Five steps are enough to synthesize receptor 1 that is complementary in charge and shape to citrate. Electrostati
Supramolecular Alloys from Fluorinated Hybrid Tri4Di6 Imine Cages
Kunde, Tom,Pausch, Tobias,Schmidt, Bernd M.
supporting information, p. 8457 - 8460 (2021/05/24)
To create innovative materials, efficient control and engineering of pore sizes and their characteristics, crystallinity and stability is required. Eight hybrid Tri4Di6 imine cages with a tunable degree of fluorination and one fully fluorinated Tri4Di6 imine cage are investigated. Although the fluorinated and the non-fluorinated building blocks used herein differ vastly in reactivity, it was possible to gain control over the outcome of the self-assembly process, by carefully controlling the feed ratio. This represents the first hybrid material based on fluorinated/hydrogenated porous organic cages (POCs). These cages with unlimited miscibility in the solid state were obtained as highly crystalline samples after recrystallization and even showed retention of the crystal lattice, forming alloys. All mixtures and the fully fluorinated Tri4Di6 imine cage were analyzed by MALDI-MS, single-crystal XRD, powder XRD and in regard to thermal stability (TGA).