190779-62-5Relevant academic research and scientific papers
Building Covalent Molecular Capsules by Thiol-Michael Addition Click Reaction
Perretti, Marcelle D.,Pérez-Márquez, Lidia A.,García-Rodríguez, Raúl,Carrillo, Romen
, p. 840 - 850 (2019)
The thiol-Michael addition (TMA) is a powerful methodology to click several fragments together, despite having been underestimated in the synthesis of complex systems for supramolecular chemistry. Herein, a very fast and efficient method has been developed to make covalent molecular capsules by taking advantage of the TMA click reaction. Several scaffolds commonly used in supramolecular chemistry, such as calixarenes, CTV, or cavitands, have been used to quickly obtain covalent cages. Additionally, a 'click&click' procedure has been also developed, by sequential combination of TMA and CuAAC click reaction, as an easy and quick way to build complex molecular structures.
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).
Electroactive anion receptor with high affinity for arsenate
Etkind, Samuel I.,Vander Griend, Douglas A.,Swager, Timothy M.
supporting information, p. 10050 - 10061 (2020/10/02)
Herein, we present the synthesis and characterization of a macrocyclic polyamide cage that incorporates redox-active 1,4-dithiin units. UV/vis titration experiments with eight anions in acetonitrile revealed high affinity for H2AsO4
MACROCYCLIC COMPOUNDS
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Paragraph 00218, (2018/10/19)
The present invention relates to macrocyclic compounds which are capable of selective binding to a target saccharide (e.g. glucose), making them particularly well suited for use in saccharide sensing applications. The present invention also relates to processes for the preparation of said compounds, to compositions and devices comprising them, and to their use in the detection of a target saccharide.
Alkane oxidation catalysed by a self-folded multi-iron complex
Mettry, Magi,Moehlig, Melissa Padilla,Gill, Adam D.,Hooley, Richard J.
, p. 120 - 128 (2016/11/09)
A preorganised ligand scaffold is capable of coordinating multiple Fe(II) centres to form an electrophilic CH oxidation catalyst. This catalyst oxidises unactivated hydrocarbons including simple, linear alkanes under mild conditions in good yields with selectivity for the oxidation of secondary CH bonds. Control complexes containing a single metal centre are incapable of oxidising unstrained linear hydrocarbons, indicating that participation of multiple centres aids the CH oxidation of challenging substrates.
Enhanced fluorescence of silver nanoclusters stabilized with branched oligonucleotides
Latorre, Alfonso,Lorca, Romina,Zamora, Felix,Somoza, Alvaro
supporting information, p. 4950 - 4952 (2013/06/26)
DNA stabilized silver nanoclusters (AgNCs) are promising optical materials, whose fluorescence properties can be tuned by the selection of the DNA sequence employed. In this work we have used modified oligonucleotides in the preparation of AgNCs. The fluorescent intensity obtained was 60 times higher than that achieved with standard oligonucleotides. The Royal Society of Chemistry.
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 (2013/07/26)
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°.
Differential recognition of mannose-based polysaccharides by tripodal receptors based on a triethylbenzene scaffold substituted with trihydroxybenzoyl moieties
Carrero, Paula,Arda, Ana,Alvarez, Monica,Doyagueez, Elisa G.,Rivero-Buceta, Eva,Quesada, Ernesto,Prieto, Alicia,Solis, Dolores,Camarasa, Maria Jose,Perez-Perez, Maria Jesus,Jimenez-Barbero, Jesus,San-Felix, Ana
, p. 65 - 76 (2013/02/22)
The tripodal receptors 1 and 2 based on a triethylbenzene scaffold substituted with trihydroxybenzoyl groups have been synthesised. The conformational preferences and carbohydrate-binding ability of 1 and 2 have been examined by NMR spectroscopy and model
C3-symmetric proline-functionalized organocatalysts: Enantioselective michael addition reactions
Moorthy, Jarugu Narasimha,Saha, Satyajit
supporting information; experimental part, p. 6359 - 6365 (2011/03/17)
C3-Symmetric, tripodal catalyst 4 based on 1,3,5- triethylbenzene, which incorporates the features of a molecular receptor, is shown to catalyze Michael addition reactions ofcarbonyl compounds to β-nitrostyrenes in a high stereoselectivity (up to 99:1a dr and up to 98%ee). Copyright
Solvent-induced amphiphilic molecular baskets: Unimolecular reversed micelles with different size, shape, and flexibility
Ryu, Eui-Hyun,Yan, Jie,Zhong, Zhenqi,Zhao, Yan
, p. 7205 - 7213 (2008/02/01)
Amphiphilic molecular baskets were obtained by attaching facially amphiphilic cholate groups to a covalent scaffold (calix[4]arene or 1,3,5-2,4,6-hexasubstituted benzene). In a solvent mixture consisting of mostly a nonpolar solvent (i.e., CCl4
