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THIACALIX[4]ARENES: SYNTHESIS AND MOLECULAR RECOGNITION OF SOME ANIONS A.A. Yantemirova, R.V. Nosov, A.N. Yagarmina, I.I. Stoikov, I.S. Antipin, A.I. Konovalov A.M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation. E-mail: anelia_86@mail.ru The potential uses of products of supramolecular chemistry and the ability of these products to exhibit properties typical of highly organized biomolecules, e.g. molecular recognition, catalysis, active and selective transport, has promoted research in the chemistry of synthetic receptors. The design and synthesis of systems, capable of recognizing anions, continues to be one of the challenging problems in supramolecular chemistry. For the synthesis of anion receptors we had proposed to use derivatives of thiacalixarene with different substituents at the lower rim. Regioselective functionalization of the lower rim of the thia-analog of calixarene is significantly complicated because of the difficulties in selection of the reaction conditions (ratio of reagents, temperature and duration of the synthesis). Therefore, synthesis of thiacalix[4]arenes with different substituents at the lower rim is commonly more difficult than that of the other similar macrocycles substituted with identical fragments. New thiacalix[4]arenes containing amide, hydroxyl and ester fragments differently substituted at the lower rim were synthesized. For the synthesis of stereoisomers of p- tert-butyl thiacalix[4]arene with ester and amide fragments at the lower rim, the template effect of alkali metal cations was used. Receptor properties of the newly synthesized thiacalix[4]arene derivatives toward some tetrabutylammonium salts n- Bu4NX (X =F - , Cl - , Br - , I - , CH3CO2 - , H2PO4 - , NO3 - ) were studied by UV spectroscopy. Selective receptors for fluoride ion and dihydrogen phosphate ion were found. This work was supported by Federal Program "Research and scientific- pedagogical cadres Innovative Russia" in 2009-2013 years (№ P1295 on 9 June 2010), RFBR (09-03-00426, 10-03-92661-NSF) and the Program of the President of the Russian Federation for the State support of young Russian scientists - Doctors of Sciences (MD-2747.2010.3).
Tuning of Knoevenagel-type substrate reactivity and optical properties by supramolecular interactions Nadine Allendörfer & Jean-Marie Lehn* <strong>Laboratoire</strong> de Chimie Supramoléculaire, ISIS Université de Strasbourg 8 Allée Gaspard Monge, 67000 Strasbourg (France) lehn@isis.u-strasbg.fr Dynamic chemistry uses reversible reactions of molecular and supramolecular entities. Here a covalent or non-covalent linkage of the components is possible. Dynamic covalent chemistry (DCC) has become a useful tool in material science and drug design. Some examples of reversible reactions used in DCC are amine/carbonyl condensations, peptide exchange, disulfide exchange, trans-esterifications, Diels-Alder condensations and olefin metathesis. In this work, we have focused on the Knoevenagel reaction, which allows the dynamic formation and cleavage of C=C double bonds. The reactivity of Knoevenagel-type substrates like benzylidenes, derived from aldehydes and barbituric acid, can be influenced by their structure. Therefore, we modified the aldehyde components to obtain polyene benzylidenes. Such donor- acceptor polyenes have interesting linear and nonlinear optical properties and have potential applications in telecommunications, optical data storage, and optical information processing. The reactivity and optical properties of Knoevenagel-type components can also be tuned by supramolecular interactions. An H-bond-mediated molecular recognition of various benzylidenes and receptors is observed. A comparative study of the reactivity and optical properties of Knoevenagel-type substrates with and without supramolecular influence was made.
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4 th International Summer School Se
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4 th International Summer School
Page 5 and 6: Tuesday, September 13 th 9 - 10.30
Page 7 and 8: 4.30 - 5.30 pm Poster Short Talks (
Page 9 and 10: 2.30 - 4 pm Session VIII (Inorganic
Page 11 and 12: 11.30 - 12.00 am Olga Federova, Mos
Page 13 and 14: INNOVATIVE DEVELOPMENTS ON THE BASI
Page 15 and 16: Calixarenes: from molecular recepto
Page 17 and 18: Controlled and Targeted Drug Delive
Page 19 and 20: What does the recognition of biomol
Page 21 and 22: Binding properties of calix[4]arene
Page 23 and 24: “Light and Molecular Design in Bi
Page 25 and 26: Supramolecular protein immobilizati
Page 27 and 28: Cucurbiturils at the interface betw
Page 29 and 30: Chiral Concave N-Heterocyclic Carbe
Page 31 and 32: Aromaticity Switching In Porphyrino
Page 33 and 34: Zwitterion-chromophore modules for
Page 35 and 36: Chemoinformatics approaches to virt
Page 37 and 38: Polyphosphorus Ligands in Supramole
Page 39 and 40: Lithium-controlled hierarchical ass
Page 41 and 42: Luisa De Cola Germany, Münster "Se
Page 43 and 44: Cationic amphiphilic calixarenes: s
Page 45 and 46: Supramolecular devices based on pho
Page 47 and 48: The sensing of interfacial interact
Page 49 and 50: Molecular recognition of organic qu
Page 51 and 52: Towards a molecular assembly based
Page 53 and 54: Analysis of benzodiaza-15-crown-5 e
Page 55: Crown-containing derivatives of nap
Page 59 and 60: FRET based distance measurements on
Page 61 and 62: Synthesis and supramolecular associ
Page 63 and 64: The features of the coordination ne
Page 65 and 66: Catalysts within Dynamic Combinator
Page 67 and 68: SYNTHESIS AND COMPLEXATION ABILITIE
Page 69 and 70: Towards a Light Driven Proton Pump
Page 71 and 72: HPLC study of the complexation of c
Page 73 and 74: Novel fluorescent sensors based on
Page 75 and 76: SYNTHETIC TETRAAMIDES ANION RECEPTO
Page 77 and 78: Development of Vesicle-based Chemos
Page 79 and 80: Catechol derivatives of thiacalix[4
Page 81 and 82: Victor Pavlovsky Ukraine, Odessa "S
Page 83 and 84: Synthesis of disubstituted by merca
Page 85 and 86: SUPRAMOLECULAR POLYMERS OF OLIGO-DY
Page 87 and 88: Investigation of self-assembling ab
Page 89 and 90: Conjugates of thiacalixarenes and c
Page 91 and 92: Chromogenic Anion Receptors Based o
Page 93 and 94: Family Name First Name Title Positi
Page 95: Universität Regensburg - direction
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