1
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Affiliation(s)
- Radim Hrdina
- Institute of Organic Chemistry Justus-Liebig University Giessen Heinrich-Buff-Ring 17 35392 Giessen Germany
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2
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Denisov DA, Novikov RA, Potapov KV, Korolev VA, Shulishov EV, Tomilov YV. 1,1 ’-Bicyclopropyl-2,2-dicarboxylate and Cyclopropylmethylidenemalonate as Homovinylogs and Vinylogs of Donor-Acceptor Cyclopropanes. ChemistrySelect 2016. [DOI: 10.1002/slct.201601506] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dmitry A. Denisov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Roman A. Novikov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Konstantin V. Potapov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Victor A. Korolev
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Evgeny V. Shulishov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Yury V. Tomilov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russian Federation
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3
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Takaki Y, Ozawa R, Kajitani T, Fukushima T, Mitsui M, Kobayashi K. Synthesis and Self-Assembly of Cyclic 2,7-Anthrylene Ethynylene 1,3-Phenylene Ethynylene Trimer with a Planar Conformation. Chemistry 2016; 22:16760-16764. [PMID: 27734532 DOI: 10.1002/chem.201603627] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Indexed: 11/06/2022]
Abstract
Cyclic arylene ethynylene hexamer 1, composed of alternating 2,7-anthrylene ethynylene units and meta-phenylene ethynylene units, was synthesized. It shows C3 symmetry and possesses a flat and rigid conformation with a large equilateral triangle-like cavity. Macrocycle 1 self-associates through π-π stacking interactions between the anthracene-containing macrocyclic aromatic cores with indefinite-association constant KE =6980 m-1 in CDCl3 at 303 K. Macrocycle 1 also self-assembles into π-stacked nanofibers in the drop-cast film.
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Affiliation(s)
- Yuta Takaki
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Ryota Ozawa
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Takashi Kajitani
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.,RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo, 679-5148, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Masaaki Mitsui
- Department of Chemistry, Graduate School of Science, Rikkyo University, 3-34-1 Nishiikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Kenji Kobayashi
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
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4
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Zhong Y, Wang Q, Yang Y, Lu Z, He L, Gong B. Hexakis(m-phenylene ethynylene) Macrocycles with Multiple H-Bonding Side Chains and Modified Cavities: Altered Stacking Strength and Persistent Tubular Assembly. Org Lett 2016; 18:2094-7. [DOI: 10.1021/acs.orglett.6b00718] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yulong Zhong
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Qiuhua Wang
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Yi Yang
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Zhonglin Lu
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Lan He
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
- National Institute for Food and Drug Control, Beijing 100050, China
| | - Bing Gong
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
- Department
of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States
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5
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6
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Gooyit M, Tricoche N, Lustigman S, Janda KD. Dual protonophore-chitinase inhibitors dramatically affect O. volvulus molting. J Med Chem 2014; 57:5792-9. [PMID: 24918716 PMCID: PMC4216208 DOI: 10.1021/jm5006435] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The
L3-stage-specific chitinase OvCHT1 has been implicated in the
development of Onchocerca volvulus,
the causative agent of onchocerciasis. Closantel, a known anthelmintic
drug, was previously discovered as a potent and specific OvCHT1 inhibitor.
As closantel is also a known protonophore, we performed a simple scaffold
modulation to map out the structural features that are relevant for
its individual or dual biochemical roles. Furthermore, we present
that either OvCHT1 inhibition or protonophoric activity was capable
of affecting O. volvulus L3 molting
and that the presence of both activities in a single molecule yielded
more potent inhibition of the nematode’s developmental process.
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Affiliation(s)
- Major Gooyit
- Departments of Chemistry and Immunology and Microbial Science, The Skaggs Institute for Chemical Biology, and The Worm Institute of Research and Medicine, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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7
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Zhang Y, Haske W, Cai D, Barlow S, Kippelen B, Marder SR. Efficient blue-emitting electrophosphorescent organic light-emitting diodes using 2-(3,5-di(carbazol-9-yl)phenyl)-5-phenyl-1,3,4-oxadiazole as an ambipolar host. RSC Adv 2013. [DOI: 10.1039/c3ra43720e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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8
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Candeias NR, Afonso CAM, Gois PMP. Making expensive dirhodium(ii) catalysts cheaper: Rh(ii) recycling methods. Org Biomol Chem 2012; 10:3357-78. [DOI: 10.1039/c2ob06731e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Synthesis and characterization of optically active poly(phenylene-ethynylene)s containing chiral oxazoline derivatives. Polym J 2011. [DOI: 10.1038/pj.2011.129] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Duddeck H, Tóth G, Simon A, Gómez ED, Mattiza JT. Adamantanes as spherical nanosondes in adducts with a chiral dirhodium complex-discriminating enantiomers and probing spatial proximities. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49:328-342. [PMID: 21452345 DOI: 10.1002/mrc.2751] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 02/10/2011] [Indexed: 05/30/2023]
Abstract
Three different kinds of substituted chiral adamantane molecules-adamantanones, dioxolanoadamantanes and dithiolano-adamantanes-were studied in the dirhodium experiment (NMR measurement with 1:1 molar mixtures with Rh((II))(2)[(R)-(+)-MTPA](4) in CDCl(3)). Their different behavior in adduct formation is described, and the possibility of determining enantiomeric purities and absolute configurations is explored. Detailed inspection of one- and two-dimensional NMR experiments allowed for an interpretation of steric and electronic intra-adduct interaction showing that the phenyl groups of Rh* tend to enwrap the bound adamantane ligand so that through-space effects over a range of 6-7 Å away from the binding rhodium atom can be observed. Even slight differences in the relative orientation of phenyl groups can be monitored when comparing diastereomeric adducts via NMR signal dispersion.
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Affiliation(s)
- Helmut Duddeck
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1B, D-30167 Hannover, Germany.
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11
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Sinha A, Daw P, Rahaman SW, Saha B, Bera JK. A RuII–N-heterocyclic carbene (NHC) complex from metal–metal singly bonded diruthenium(I) precursor: Synthesis, structure and catalytic evaluation. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Li S, Moorefield CN, Shreiner CD, Wang P, Sarkar R, Newkome GR. A rigid metallohexameric macrocycle composed of endo- and exo-cyclic bisterpyridine-metal complexes. NEW J CHEM 2011. [DOI: 10.1039/c1nj20195f] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Mattiza JT, Meyer VJ, Duddeck H. Stereoisomeric 2-butylphenylsulfoxides and their binding modes in the adduct formation with an enantiopure dirhodium tetracarboxylate complex. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.01.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Mattiza JT, Meyer VJ, Duddeck H. Experimental verification of diverging mechanisms in the binding of ether, thioether, and sulfone ligands to a dirhodium tetracarboxylate. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:192-197. [PMID: 20066661 DOI: 10.1002/mrc.2562] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Complexation of the oxygen atom in 2-butylphenylethers and sulfur in 2-butylphenylthioethers to a rhodium atom in dirhodium tetracarboxylate Rh((II)) (2)[(R)-(+)-MTPA](4) is compared. Oxygen atoms complex via electrostatic attraction exclusively leading to an increase in alpha effects on C-2 complexation shifts in the sequence OCH(3) > F > Br > NO(2). However, that trend is opposite in thioethers. This can be rationalized by an additional highest occupied molecular orbital (HOMO)-LUMO interaction and the response of this interaction upon complex formation shifts. Thereby, an experimental evidence was found for the existence of the HOMO-LUMO binding mechanism which has been proposed previously based on theoretical considerations and indirect spectroscopic evidence. Sulfones hardly bind to Rh((II)) (2)[(R)-(+)-MTPA](4). Diastereomeric dispersion effects at (13)C and (1)H signals can be observed for all compounds indicating that enantiodifferentiation is easy in all classes of functionalities.
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Affiliation(s)
- Jens T Mattiza
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
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15
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Feng K, Zuniga C, Zhang YD, Kim D, Barlow S, Marder SR, Brédas JL, Weck M. Norbornene-Based Copolymers Containing Platinum Complexes and Bis(carbazolyl)benzene Groups in Their Side-Chains. Macromolecules 2009. [DOI: 10.1021/ma901280x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Marcus Weck
- Department of Chemistry and Molecular Design Institute, New York University, New York, New York 10003
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16
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Lo SC, Harding RE, Shipley CP, Stevenson SG, Burn PL, Samuel IDW. High-Triplet-Energy Dendrons: Enhancing the Luminescence of Deep Blue Phosphorescent Iridium(III) Complexes. J Am Chem Soc 2009; 131:16681-8. [DOI: 10.1021/ja903157e] [Citation(s) in RCA: 172] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shih-Chun Lo
- Centre for Organic Photonics & Electronics, The University of Queensland, School of Chemistry & Molecular Biosciences, QLD 4072, Australia, Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, Fife, KY16 9SS, U.K., and Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Ruth E. Harding
- Centre for Organic Photonics & Electronics, The University of Queensland, School of Chemistry & Molecular Biosciences, QLD 4072, Australia, Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, Fife, KY16 9SS, U.K., and Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Christopher P. Shipley
- Centre for Organic Photonics & Electronics, The University of Queensland, School of Chemistry & Molecular Biosciences, QLD 4072, Australia, Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, Fife, KY16 9SS, U.K., and Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Stuart G. Stevenson
- Centre for Organic Photonics & Electronics, The University of Queensland, School of Chemistry & Molecular Biosciences, QLD 4072, Australia, Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, Fife, KY16 9SS, U.K., and Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Paul L. Burn
- Centre for Organic Photonics & Electronics, The University of Queensland, School of Chemistry & Molecular Biosciences, QLD 4072, Australia, Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, Fife, KY16 9SS, U.K., and Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Ifor D. W. Samuel
- Centre for Organic Photonics & Electronics, The University of Queensland, School of Chemistry & Molecular Biosciences, QLD 4072, Australia, Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, Fife, KY16 9SS, U.K., and Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
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18
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Díaz Gómez E, Duddeck H. Origin of 13C complexation shifts in the adduct formation of 2-butyl phenyl ethers with a dirhodium tetracarboxylate complex. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46:23-29. [PMID: 18098227 DOI: 10.1002/mrc.2116] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Complexation of the oxygen atom in 2-butyl phenyl ethers to a rhodium atom of the dirhodium tetracarboxylate Rh(II) 2[(R)-(+)-MTPA]4(Rh*, MTPA-H = methoxytrifluoromethylphenylacetic acid identical with Mosher's acid) deshields an sp3-hybridized 13C nucleus directly bonded to the ether oxygen; apparently, the inductive effect of the oxygen is enhanced when it is complexed to the rhodium atom. On the other hand, deshielding complexation shifts of aromatic ipso-carbons (alpha-positioned) are minute but ortho- and para-carbon signals are influenced by the resonance effect of oxygen. This effect can be modulated by further substituents at the benzene ring. In turn, this modulation of the resonance correlates linearly ith the magnitude of the inductive effect exerted on the aliphatic alpha-carbon atoms. Diastereomeric dispersion effects at 13C signals can be observed for most compounds, indicating that enantiodifferentiation is possible in this class of ethers.
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Affiliation(s)
- Edison Díaz Gómez
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
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19
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Rodríguez P, Álvarez E, Nicasio MC, Pérez PJ. Catalytic Carbon−Hydrogen Bond Functionalization in an Ionic Liquid Medium. Organometallics 2007. [DOI: 10.1021/om700822a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pilar Rodríguez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain, and Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Eleuterio Álvarez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain, and Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - M. Carmen Nicasio
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain, and Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain, and Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
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20
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Duddeck H, Malik S, Moeller S, Gáti T, Tóth G, Rozwadowski Z. Chirality Recognition of Selenium Compounds by NMR Spectroscopy in the Presence of a Chiral Dirhodium Complex. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500590905905] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | | | - S. Moeller
- a Hannover University , Hannover , Germany
| | - Tamás Gáti
- b Budapest University of Technology and Economics , Budapest , Hungary
| | - Gábor Tóth
- b Budapest University of Technology and Economics , Budapest , Hungary
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21
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Moeller S, Albert D, Duddeck H, Simon A, Tóth G, Demchuk OM, Pietrusiewicz KM. Chiral Atropisomeric 2-Iodo-4,4′,6,6′-tetramethyl-2′-(diphenylphosphoryl)-1,1′-biphenyl-enantiodifferentiation by Rh2[MTPA]4-Adduct Formation and Conformational Analysis. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/104265091000534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Zhao X, Schanze KS. Meta-linked poly(phenylene ethynylene) conjugated polyelectrolyte featuring a chiral side group: helical folding and guest binding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:4856-62. [PMID: 16649808 DOI: 10.1021/la060031t] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A water soluble, meta-linked poly(phenylene ethynylene) featuring chiral and optically active side groups based on L-alanine (mPPE-Ala) has been studied by using absorption, fluorescence, and circular dichroism spectroscopy. Studies of mPPE-Ala in methanol/water solvent mixtures show that the polymer folds into a helical conformation, and the extent of helical folding increases with the volume % water in the solvent. The presence of the helical conformation is signaled by the appearance of a broad, excimer-like visible fluorescence band, combined with a strong bisignate circular dichroism signal in the region of the pi,pi absorption of the polymer backbone. The circular dichroism signal exhibits negative chirality, suggesting that the left-handed (M-form) of the helix is in enantiomeric excess. Binding of the metallointercalator [Ru(bpy)2(dppz)]2+ (where bpy = 2,2-bipyridine and dppz = dipyrido[3,2-a:2',3'-c]phenazine) with the helical polymer is accompanied by the appearance of the orange-red photoluminescence from the metal complex. This effect is directly analogous to that observed when [Ru(bpy)2(dppz)]2+ binds to DNA via intercalation, suggesting that the metal complex binds to mPPE-Ala by intercalating between the pi-stacked phenylene ethynylene residues. Cationic cyanine dyes also bind to the periphery of the helical polymer in a manner that is interpreted as "groove binding". A circular dichroism signal is observed that is believed to arise from exciton coupling within the chiral cyanine dye chromophore aggregate that is formed as the dye molecules are oriented by the helical mPPE-Ala "template".
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Affiliation(s)
- Xiaoyong Zhao
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
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23
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Urbano J, Izarra R, Gómez-Ariza JL, Trofimenko S, Díaz-Requejo MM, Pérez PJ. A non-fluorous copper catalyst for the styrene cyclopropanation reaction in a fluorous medium. Chem Commun (Camb) 2006:1000-2. [PMID: 16491189 DOI: 10.1039/b517337j] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complex Tp(Br3)Cu(NCMe) (1), containing no fluorine atoms, can be dissolved in the perfluoropolyether FOMBLIN and employed as a catalyst for the styrene cyclopropanation reaction with ethyl diazoacetate, with activities and diastereo-selectivities identical to those observed under homogeneous conditions with the advantage of being able to use a fluorous separation technique for catalyst recycling.
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Affiliation(s)
- Juan Urbano
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Universidad de Huelva, Campus de El Carmen, 21007-Huelva, Spain
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24
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Moeller S, Albert D, Duddeck H, Simon A, Tóth G, Demchuk OM, Pietrusiewicz KM. Chiral atropisomeric diiodobiphenyls––enantiodifferentiation by the dirhodium method. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.09.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Gáti T, Simon A, Tóth G, Szmigielska A, Maj A, Pietrusiewicz K, Moeller S, Magiera D, Duddeck H. Bis(phosphane oxide) Adducts of Rh
2
(MTPA)
4
— Kinetics and Chirality Discrimination. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300853] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tamás Gáti
- Institute for General and Analytical Chemistry of the Budapest University of Technology and Economics, Szent Gellért tér 4, 1111 Budapest, Hungary, Fax: (internat.) +36‐1‐463‐3408
| | - András Simon
- Institute for General and Analytical Chemistry of the Budapest University of Technology and Economics, Szent Gellért tér 4, 1111 Budapest, Hungary, Fax: (internat.) +36‐1‐463‐3408
| | - Gábor Tóth
- Institute for General and Analytical Chemistry of the Budapest University of Technology and Economics, Szent Gellért tér 4, 1111 Budapest, Hungary, Fax: (internat.) +36‐1‐463‐3408
| | - Anna Szmigielska
- Maria Curie‐Sklodowska University, Department of Organic Chemistry, Lublin, Poland, Fax: (internat.) +48‐81‐524‐2251
| | - Anna M. Maj
- Maria Curie‐Sklodowska University, Department of Organic Chemistry, Lublin, Poland, Fax: (internat.) +48‐81‐524‐2251
| | - K. Michał Pietrusiewicz
- Maria Curie‐Sklodowska University, Department of Organic Chemistry, Lublin, Poland, Fax: (internat.) +48‐81‐524‐2251
- Polish Academy of Sciences, Institute of Organic Chemistry, ul. Kasprzaka 44/52, 01‐224 Warsaw, Poland, Fax: (internat.) +48‐22‐632 6681
| | - Stefan Moeller
- Hannover University, Institute of Organic Chemistry, Schneiderberg 1B, 30167 Hannover, Germany, Fax: (internat.) +49‐511‐762‐4616
| | - Damian Magiera
- Hannover University, Institute of Organic Chemistry, Schneiderberg 1B, 30167 Hannover, Germany, Fax: (internat.) +49‐511‐762‐4616
| | - Helmut Duddeck
- Hannover University, Institute of Organic Chemistry, Schneiderberg 1B, 30167 Hannover, Germany, Fax: (internat.) +49‐511‐762‐4616
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26
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Magiera D, Szmigielska A, Pietrusiewicz KM, Duddeck H. Secondary phosphine oxides: tautomerism and chiral recognition monitored by multinuclear NMR spectroscopy of their Rh2[(R)-MTPA]4 adducts. Chirality 2003; 16:57-64. [PMID: 14628300 DOI: 10.1002/chir.10306] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Six secondary phosphine oxides and their tautomeric equilibria as free ligands and in the presence of an equimolar amount of the chiral dirhodium complex Rh* are described and discussed. Discrimination of enantiomers is easily possible by inspecting the (31)P NMR resonances; some (1)H and (13)C NMR resonances are useful as well. H/D exchange of the acidic protons in the phosphine oxides takes place with acetone-d(6), the solvent additive, after some hours but does not obscure the chiral recognition experiment. (103)Rh,(31)P coupling constants are discussed briefly. Decomposition of ligand molecules in 1:1-Rh*-adducts occurs slowly but completely.
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Affiliation(s)
- Damian Magiera
- Universität Hannover, Institut für Organische Chemie, Hannover, Germany
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Affiliation(s)
- Jun-Ichi Yoshida
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Yoshida, Kyoto 606-8501, Japan.
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