1
|
Yassin A, Nehmeh B, Kantar SE, Al Kazzaz Y, Akoury E. Synthesis of lanthanide tag and experimental studies on paramagnetically induced residual dipolar couplings. BMC Chem 2022; 16:54. [PMID: 35864525 PMCID: PMC9306141 DOI: 10.1186/s13065-022-00847-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/08/2022] [Indexed: 12/02/2022] Open
Abstract
Nuclear Magnetic Resonance (NMR) spectroscopy is an indispensable technique for the structure elucidation of molecules and determination of their characteristic interactions. Residual Dipolar Coupling (RDC) is an NMR parameter that provides global orientation information of molecules but necessitates the use of an anisotropic orientation medium for the partial alignment of the target molecule with respect to the magnetic field. Importantly, anisotropic paramagnetic tags have been successful as orienting media in biomolecular NMR applications but their use in small organic molecules remains imperfect due to challenges in designing functional lanthanide complexes with varying degrees of bonding in the Ln(III) inner coordination sphere. In this study, we propose a strategy for the synthesis of the lanthanide tag 4-mercaptomethylpyridine-2,6-dicarboxylic acid, 4-MMDPA and the measurement of RDCs in a target molecule using several paramagnetic lanthanide complexes.
Collapse
Affiliation(s)
- Ali Yassin
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, 1102-2801, Lebanon.,Inorganic and Organometallic Coordination Chemistry Laboratory, Faculty of Science, LCIO, Lebanese University, Beirut, Lebanon
| | - Bilal Nehmeh
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, 1102-2801, Lebanon
| | - Sally El Kantar
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, 1102-2801, Lebanon.,TIMR (Integrated Transformations of Renewable Matter), Centre de Recherche Royallieu, Université de Technologie de Compiègne, ESCOM, CS 60 319, 60203, Compiègne Cedex, France
| | - Yara Al Kazzaz
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, 1102-2801, Lebanon
| | - Elias Akoury
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, 1102-2801, Lebanon. .,Department of Chemistry, Faculty of Chemistry and Pharmacy, Ludwig Maximilian University, 81377, Munich, Germany.
| |
Collapse
|
2
|
Szabó M, Kleineisel M, Németh K, Domján A, Vass E, Szilvágyi G. Twisted paddlewheel rhodium complexes: Contribution of central and axial chirality to ECD, VCD, and NMR spectra. Chirality 2020; 32:446-456. [PMID: 32031731 DOI: 10.1002/chir.23182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/03/2020] [Accepted: 01/17/2020] [Indexed: 01/14/2023]
Abstract
Dirhodium complexes bearing N-substituted chiral amino acid ligands are investigated. These complexes have an unusual twisted paddlewheel structure, showing inherent chirality. We would like to demonstrate that parallel application of chiroptical spectroscopic methods (ECD and VCD) and NMR spectroscopy combined with quantum chemical calculations constitutes a powerful tool to determine the configuration of the complexes unequivocally. Two chiroptical methods are needed to determine the absolute configuration: ECD for the coordinated nitrogen atom and VCD for the rhodium core. A quick to use NMR method is also presented: Upon the coordination of small molecules in the axial position, the relative configuration of both the rhodium core and the nitrogen atom can be determined simultaneously by studying spatial proximities provided by 1D NOE spectra.
Collapse
Affiliation(s)
- Márk Szabó
- Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary.,NMR Laboratory, Hungarian Academy of Sciences, Research Centre for Natural Sciences, Instrumentation Centre, Budapest, Hungary
| | - Márk Kleineisel
- Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary
| | - Krisztina Németh
- MS Metabolomics Laboratory, Hungarian Academy of Sciences, Research Center for Natural Sciences, Instrumentation Centre, Budapest, Hungary
| | - Attila Domján
- NMR Laboratory, Hungarian Academy of Sciences, Research Centre for Natural Sciences, Instrumentation Centre, Budapest, Hungary
| | - Elemér Vass
- Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary
| | | |
Collapse
|
3
|
Głaszczka R, Jaźwiński J. Complexation of selenomethionine and its derivatives with some dimeric rhodium(II) tetracarboxylates: 1H and 13C nuclear magnetic resonance spectroscopy. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.126908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
4
|
Quesada-Moreno MM, Virgili A, Monteagudo E, Claramunt RM, Avilés-Moreno JR, López-González JJ, Alkorta I, Elguero J. A vibrational circular dichroism (VCD) methodology for the measurement of enantiomeric excess in chiral compounds in the solid phase and for the complementary use of NMR and VCD techniques in solution: the camphor case. Analyst 2018; 143:1406-1416. [PMID: 29457166 DOI: 10.1039/c7an01855j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time, the success of a methodology for the determination of enantiomeric excess (% ee) in chiral solid samples by vibrational circular dichroism (VCD) spectroscopy is reported. We have used camphor to determine the % ee in a blind sample constituted by a mixture of its two enantiomers as a test for the validity of our approach. IR and VCD spectra of different enantiomeric mixtures of R/S-camphor in Nujol mulls were recorded and linear regressions of VCD intensities (ΔAbs.) vs. % ee for selected bands were found. Finally, the VCD intensities of a blind sample were interpolated in these linear regressions, obtaining its % ee with a rms of 2.4. These results in the solid phase were complemented with the determination of % ee in the liquid phase by VCD and NMR techniques, which are proved to be complementary techniques to carry out this kind of analysis. In the same way as in the VCD solid phase, linear regressions of ΔAbs. vs. % ee for selected bands were established, obtaining a rms of 1.1 in the % ee determination of a blind sample. 1H NMR experiments at 600 MHz using the chiral solvating agent, (S,S)-ABTE, allow the determination of the proportions of enantiomers in CD2Cl2 solution with great accuracy. 13C CPMAS NMR spectra prove that this technique cannot be used for conglomerates and/or solid solutions.
Collapse
Affiliation(s)
- María Mar Quesada-Moreno
- Grupo de Investigación Química Física Teórica y Experimental (FQM-173), Departamento de Química Física y Analítica, Facultad de Ciencias Experimentales, Universidad de Jaén, Campus de Las Lagunillas, E-23071 Jaén, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
5
|
Chlebek J, Novák Z, Kassemová D, Šafratová M, Kostelník J, Malý L, Ločárek M, Opletal L, Hošt'álková A, Hrabinová M, Kuneš J, Novotná P, Urbanová M, Nováková L, Macáková K, Hulcová D, Solich P, Pérez Martín C, Jun D, Cahlíková L. Isoquinoline Alkaloids fromFumaria officinalisL. and Their Biological Activities Related toAlzheimer's Disease. Chem Biodivers 2016; 13:91-9. [DOI: 10.1002/cbdv.201500033] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/15/2015] [Indexed: 11/08/2022]
|
6
|
Jung SH, Kim KY, Ahn A, Lee SS, Choi MY, Jaworski J, Jung JH. NMR detection of chirality and enantiopurity of amines by using benzene tricarboxamide-based hydrogelators as chiral solvating agents. NEW J CHEM 2016. [DOI: 10.1039/c6nj01543c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The use of gelator 1D as a means for NMR-based determination of the enantiopurity and chirality of amines.
Collapse
Affiliation(s)
- Sung Ho Jung
- Department of Chemistry and Research Institute of National Sciences
- Gyeongsang National University
- Jinju
- Korea
| | - Ka Young Kim
- Department of Chemistry and Research Institute of National Sciences
- Gyeongsang National University
- Jinju
- Korea
| | - Ahreum Ahn
- Department of Chemistry and Research Institute of National Sciences
- Gyeongsang National University
- Jinju
- Korea
| | - Shim Sung Lee
- Department of Chemistry and Research Institute of National Sciences
- Gyeongsang National University
- Jinju
- Korea
| | - Myong Yong Choi
- Department of Chemistry and Research Institute of National Sciences
- Gyeongsang National University
- Jinju
- Korea
| | - Justyn Jaworski
- Department of Chemical Engineering and Institute of Nanoscience and Technology
- Hanyang University
- Seoul
- Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of National Sciences
- Gyeongsang National University
- Jinju
- Korea
| |
Collapse
|
7
|
Zhou Y, Ye H, You L. Reactivity-based dynamic covalent chemistry: reversible binding and chirality discrimination of monoalcohols. J Org Chem 2015; 80:2627-33. [PMID: 25674707 DOI: 10.1021/jo502801g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In an effort to develop reactivity-based dynamic covalent bonding and to expand the scope and application of the dynamic covalent chemistry, in situ-generated simple generic iminium ions were utilized for the dynamic covalent binding of monoalcohols with high affinity. Hammett analysis was conducted to manipulate the equilibrium and correlate with the reactivity of reactants. The structural features of aldehydes and secondary amines were identified, and both polar and steric effects have significant impact on the binding. In particular, the substrates which can participate in π-π and polar-π interactions are able to afford apparent equilibrium constants in the magnitude of 10(4) M(-2), demonstrating the power of weak supramolecular forces to stabilize the dynamic covalent assembly. The generality of the assembly was validated with a series of mono secondary alcohols. To showcase the practicality of our system, chirality discrimination and ee measurement of chiral secondary alcohols were achieved.
Collapse
Affiliation(s)
- Yuntao Zhou
- State Key Laboratory of Structural Chemistry, Fujian, Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fujian 350002, P. R. China
| | | | | |
Collapse
|
8
|
|
9
|
Uccello-Barretta G, Schurig V, Balzano F, Vanni L, Aiello F, Mori M, Ghirga F. Synergistic Effects of Trace Amounts of Water in the Enantiodiscrimination Processes by Lipodex E: A Spectroscopic and Computational Investigation. Chirality 2014; 27:95-103. [DOI: 10.1002/chir.22394] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 08/29/2014] [Accepted: 09/03/2014] [Indexed: 11/10/2022]
Affiliation(s)
| | - Volker Schurig
- Institute of Organic Chemistry; University of Tübingen; Tübingen Germany
| | - Federica Balzano
- Department of Chemistry and Industrial Chemistry; University of Pisa; Pisa Italy
| | - Letizia Vanni
- Department of Chemistry and Industrial Chemistry; University of Pisa; Pisa Italy
| | - Federica Aiello
- Department of Chemistry and Industrial Chemistry; University of Pisa; Pisa Italy
| | - Mattia Mori
- Center for Life Nano Science@Sapienza; Istituto Italiano di Tecnologia; Rome Italy
| | - Francesca Ghirga
- Department of Chemistry and Drug Technology; Sapienza University; Rome Italy
| |
Collapse
|
10
|
Dynamic Processes in Prochiral Solvating Agents (pro-CSAs) Studied by NMR Spectroscopy. Symmetry (Basel) 2014. [DOI: 10.3390/sym6020345] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
11
|
Zalesskiy SS, Danieli E, Blümich B, Ananikov VP. Miniaturization of NMR systems: desktop spectrometers, microcoil spectroscopy, and "NMR on a chip" for chemistry, biochemistry, and industry. Chem Rev 2014; 114:5641-94. [PMID: 24779750 DOI: 10.1021/cr400063g] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sergey S Zalesskiy
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Moscow, 119991, Russia
| | | | | | | |
Collapse
|
12
|
Voltammetric discrimination of mandelic acid enantiomers. Anal Biochem 2014; 449:83-9. [DOI: 10.1016/j.ab.2013.12.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 12/05/2013] [Accepted: 12/17/2013] [Indexed: 11/22/2022]
|
13
|
Głaszczka R, Jaźwiński J. Complexation of heteroaromatic N-oxides with rhodium(II) tetracarboxylates in solution: DFT and NMR investigations. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Ishihara S, Labuta J, Van Rossom W, Ishikawa D, Minami K, Hill JP, Ariga K. Porphyrin-based sensor nanoarchitectonics in diverse physical detection modes. Phys Chem Chem Phys 2014; 16:9713-46. [PMID: 24562603 DOI: 10.1039/c3cp55431g] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Porphyrins and related families of molecules are important organic modules as has been reflected in the award of the Nobel Prizes in Chemistry in 1915, 1930, 1961, 1962, 1965, and 1988 for work on porphyrin-related biological functionalities. The porphyrin core can be synthetically modified by introduction of various functional groups and other elements, allowing creation of numerous types of porphyrin derivatives. This feature makes porphyrins extremely useful molecules especially in combination with their other interesting photonic, electronic and magnetic properties, which in turn is reflected in their diverse signal input-output functionalities based on interactions with other molecules and external stimuli. Therefore, porphyrins and related macrocycles play a preeminent role in sensing applications involving chromophores. In this review, we discuss recent developments in porphyrin-based sensing applications in conjunction with the new advanced concept of nanoarchitectonics, which creates functional nanostructures based on a profound understanding of mutual interactions between the individual nanostructures and their arbitrary arrangements. Following a brief explanation of the basics of porphyrin chemistry and physics, recent examples in the corresponding fields are discussed according to a classification based on physical modes of detection including optical detection (absorption/photoluminescence spectroscopy and energy and electron transfer processes), other spectral modes (circular dichroism, plasmon and nuclear magnetic resonance), electronic and electrochemical modes, and other sensing modes.
Collapse
Affiliation(s)
- Shinsuke Ishihara
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
| | | | | | | | | | | | | |
Collapse
|
15
|
Garner AC, Hodgkinson RC, Wallis JD. Menthyloxycarbonyl phosphonium chlorides: new derivatives for determining the enantiomeric excess of chiral tertiary phosphines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
Avilés-Moreno JR, Quesada-Moreno MM, López-González JJ, Martínez-Haya B. Chiral Recognition of Amino Acid Enantiomers by a Crown Ether: Chiroptical IR-VCD Response and Computational Study. J Phys Chem B 2013; 117:9362-70. [DOI: 10.1021/jp405027s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juan Ramón Avilés-Moreno
- Department of Physical and Analytical
Chemistry, Campus Las Lagunillas, University of Jaén, E-23071 Jaén, Spain
| | - María Mar Quesada-Moreno
- Department of Physical and Analytical
Chemistry, Campus Las Lagunillas, University of Jaén, E-23071 Jaén, Spain
| | - Juan Jesús López-González
- Department of Physical and Analytical
Chemistry, Campus Las Lagunillas, University of Jaén, E-23071 Jaén, Spain
| | - Bruno Martínez-Haya
- Department of Physical, Chemical
and Natural Systems, Universidad Pablo de Olavide, E-41013 Seville, Spain
| |
Collapse
|
17
|
Labuta J, Ishihara S, Šikorský T, Futera Z, Shundo A, Hanyková L, Burda JV, Ariga K, Hill JP. NMR spectroscopic detection of chirality and enantiopurity in referenced systems without formation of diastereomers. Nat Commun 2013; 4:2188. [PMID: 23864041 PMCID: PMC3759048 DOI: 10.1038/ncomms3188] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 06/25/2013] [Indexed: 11/16/2022] Open
Abstract
Enantiomeric excess of chiral compounds is a key parameter that determines their activity or therapeutic action. The current paradigm for rapid measurement of enantiomeric excess using NMR is based on the formation of diastereomeric complexes between the chiral analyte and a chiral resolving agent, leading to (at least) two species with no symmetry relationship. Here we report an effective method of enantiomeric excess determination using a symmetrical achiral molecule as the resolving agent, which is based on the complexation with analyte (in the fast exchange regime) without the formation of diastereomers. The use of N,N'-disubstituted oxoporphyrinogen as the resolving agent makes this novel method extremely versatile, and appropriate for various chiral analytes including carboxylic acids, esters, alcohols and protected amino acids using the same achiral molecule. The model of sensing mechanism exhibits a fundamental linear response between enantiomeric excess and the observed magnitude of induced chemical shift non-equivalence in the (1)H NMR spectra.
Collapse
Affiliation(s)
- Jan Labuta
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Shinsuke Ishihara
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Tomáš Šikorský
- CEITEC—Central European Institute of Technology, Masaryk University, CZ-62500 Brno, Czech Republic
| | - Zdeněk Futera
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Chemical Physics and Optics, Ke Karlovu 3, 121 16 Prague 2, Czech Republic
- Present address: Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Atsuomi Shundo
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Present address: Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Lenka Hanyková
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Jaroslav V. Burda
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Chemical Physics and Optics, Ke Karlovu 3, 121 16 Prague 2, Czech Republic
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Japan Science and Technology Agency (JST), Core Research for Evolutional Science and Technology (CREST), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jonathan P. Hill
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Japan Science and Technology Agency (JST), Core Research for Evolutional Science and Technology (CREST), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| |
Collapse
|
18
|
Chiral Derivatizing Agents, Macrocycles, Metal Complexes, and Liquid Crystals for Enantiomer Differentiation in NMR Spectroscopy. Top Curr Chem (Cham) 2013; 341:1-68. [DOI: 10.1007/128_2013_433] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
19
|
Schmidt M, Sun H, Leonov A, Griesinger C, Reinscheid UM. Chiral discrimination of amines by anisotropic NMR parameters using chiral polyacrylamide-based gels. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50 Suppl 1:S38-S44. [PMID: 23280659 DOI: 10.1002/mrc.3886] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Revised: 09/01/2012] [Accepted: 09/14/2012] [Indexed: 05/28/2023]
Abstract
A new chiral alignment medium for dimethyl sulfoxide, methanol, and water as solvents was developed. Because both enantiomers of the gel are available, it is possible to enantiodiscriminate natural products such as strychnine HCl that naturally occurs as single enantiomer. With the two methods of achieving anisotropy, namely stretching and confinement, the degree of alignment can be adjusted, and the director changed from horizontal to vertical. This increases the applicability. Three compounds were enantiodiscriminated on the basis of residual dipolar coupling data: mefloquine HCl, strychnine HCl, and menthylamine HCl.
Collapse
Affiliation(s)
- Manuel Schmidt
- Max Planck Institute for Biophysical Chemistry, NMR II, 37077 Göttingen, Germany
| | | | | | | | | |
Collapse
|
20
|
Feng J, Yang P, Wang S, Wang J. Photoelectrochemical chiral sensing on the basis of TiO2–metal complex hybrid film. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.04.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
21
|
Mattiza JT, Meyer V, Özüduru G, Heine T, Fohrer J, Duddeck H. Competition of Ester, Amide, Ether, Carbonate, Alcohol and Epoxide Ligands in the Dirhodium Experiment (Chiral Discrimination by NMR Spectroscopy) [1]. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Thirty-eight derivatives of 3-hydroxy-2-methylpropanoic acid, each with two different oxygen functionalities, were synthesized and subjected to the standard dirhodium experiment (1H NMR in the presence of an equimolar amount of the chiral dirhodium tetracarboxylate complex Rh*). Their structures represent ester, amide, carbonate, ether, alcohol and/or epoxy groups. Significant selectivity in the binding of those oxygen groups to the complex were determined. From these results, a priority list in binding to a rhodium atom of Rh* was established: epoxides > primary alcohols > ethers ≥ esters ≥ amides > carbonates > tertiary alcohols This sequence allows the prediction of the preferred binding site of oxygen-containing groups in polyfunctional compounds, which frequently occur among natural products, and, particularly, in asymmetric synthesis of such compounds. Differentiation of the enantiomers by the dirhodium experiment is easily accomplished due to numerous signal dispersions in nearly all cases.
Collapse
Affiliation(s)
- Jens T. Mattiza
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| | - Vera Meyer
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| | - Gülsüm Özüduru
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| | - Tanja Heine
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| | - Joerg Fohrer
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| | - Helmut Duddeck
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| |
Collapse
|
22
|
Moreno JRA, Ureña FP, González JJL, Gámez F, Martínez-Haya B. Conformational landscape of a chiral crown ether: a vibrational circular dichroism spectroscopy and computational study. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.02.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
23
|
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]
|
24
|
Acuña-Rougier C, Jullian C, Olea-Azar C. NMR as a tool for simultaneous study of diasteroisomeric inclusion complexes, part 2: complexes formed by racemic mixture of 4′-hydroxyflavanone and two cyclodextrins. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-0094-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
25
|
Imidazolinium sulfonate and sulfamate zwitterions as chiral solvating agents for enantiomeric excess calculations. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.09.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
26
|
Wenzel TJ, Chisholm CD. Using NMR spectroscopic methods to determine enantiomeric purity and assign absolute stereochemistry. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2011; 59:1-63. [PMID: 21600355 DOI: 10.1016/j.pnmrs.2010.07.003] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/28/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Thomas J Wenzel
- Department of Chemistry, Bates College, Lewiston, Maine 04240, USA.
| | | |
Collapse
|
27
|
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.
Collapse
Affiliation(s)
- Helmut Duddeck
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1B, D-30167 Hannover, Germany.
| | | | | | | | | |
Collapse
|
28
|
Mattiza JT, Fohrer JGG, Duddeck H, Gardiner MG, Ghanem A. Optimizing dirhodium(ii) tetrakiscarboxylates as chiral NMR auxiliaries. Org Biomol Chem 2011; 9:6542-50. [PMID: 21808807 DOI: 10.1039/c1ob05665d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Jens T Mattiza
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167, Hannover, Germany
| | | | | | | | | |
Collapse
|
29
|
Saravanan T, Chadha A. Biocatalytic deracemization of alkyl-2-hydroxy-4-arylbut-3-ynoates using whole cells of Candida parapsilosis ATCC 7330. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.11.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
30
|
Mirri G, Bull SD, Horton PN, James TD, Male L, Tucker JHR. Electrochemical method for the determination of enantiomeric excess of binol using redox-active boronic acids as chiral sensors. J Am Chem Soc 2010; 132:8903-5. [PMID: 20536177 DOI: 10.1021/ja103462x] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A chiral ferrocene-based boronic acid interacts with (R)- and (S)-Binol to form two complexes that exhibit significantly different ferrocene-based electrode potentials. This difference in redox behavior can be exploited to demonstrate in principle how high levels of enantiomeric excess in a mixture of enantiomers can be quantified and read-out using an electrochemical method.
Collapse
Affiliation(s)
- Giorgio Mirri
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | | | | | | | | | | |
Collapse
|
31
|
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]
|
32
|
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.
Collapse
Affiliation(s)
- Jens T Mattiza
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany
| | | | | |
Collapse
|
33
|
Mattiza JT, Harada N, Kuwahara S, Hassan Z, Duddeck H. Comparing various chiral dirhodium tetracarboxylates in the dirhodium method. Chirality 2009; 21:843-9. [DOI: 10.1002/chir.20706] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|