1
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Martínez‐Aguirre MA, Medrano F, Ramírez‐Rave S, Yatsimirsky AK. Analysis of the relative stability of trigonal and tetrahedral boronate cyclic esters in terms of boronic acid and diol acidities and the strain release effect. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Felipe Medrano
- Departamento de Ciencias químico‐biológicas Universidad de Sonora Hermosillo Sonora México
| | - Sandra Ramírez‐Rave
- Facultad de Química, Universidad Nacional Autónoma de México México D.F. México
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2
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Adamczyk-Woźniak A, Sporzyński A. The influence of ortho-substituents on the properties of phenylboronic acids. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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3
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Martínez-Aguirre MA, Flores-Alamo M, Medrano F, Yatsimirsky AK. Examination of pinanediol-boronic acid ester formation in aqueous media: relevance to the relative stability of trigonal and tetrahedral boronate esters. Org Biomol Chem 2020; 18:2716-2726. [PMID: 32211727 DOI: 10.1039/d0ob00201a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The interaction of pinanediol with 2-fluorophenylboronic acid and several other substituted phenylboronic acids was studied in 40% vol. aqueous acetonitrile by 1H and 11B NMR, potentiometric and spectrophotometric titrations at variable pH values. The experimental results reveal the formation of a very stable trigonal ester (Ktrig ≈ 2 × 104 M-1) and a significantly less stable tetrahedral hydroxocomplex (Ktet ≈ 5 × 103 M-1) in contrast to the traditionally observed inverted order of stabilities Ktrig < Ktet. Comparison of the crystal structure of the trigonal ester isolated from aqueous acetonitrile with the DFT simulated structure of the respective hydroxocomplex shows that an unusual order of stabilities Ktrig > Ktet is observed in spite of the existence of the usual strain release effect in the O-B-O angle considered responsible for the typically observed increased stability of the tetrahedral hydroxocomplex. A complementary study of the stability of the six-membered cyclic boronate esters of chromotropic acid demonstrated the order Ktrig ≪ Ktet although the strain was absent in these esters. The results for m-, p-substituted phenylboronic acids show that the stability of both five- and six-membered trigonal esters formed with pinanediol and chromotropic acid, respectively, is insensitive to electronic effects but the electron accepting substituents stabilize the hydroxocomplexes. It follows from the whole set of results that Ktet can be much larger than Ktrig in the absence of the strain, but with a sufficiently acidic diol, and that the presence of the strain does not necessarily make Ktet larger than Ktrig for a less acidic diol with a purely saturated hydrocarbon backbone. Thus, the electronic effects manifested in the acidity of the diol appear to be more significant than the strain release effect in determining the Ktet/Ktrig ratio.
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Affiliation(s)
| | - Marcos Flores-Alamo
- Facultad de Química, Universidad Nacional Autónoma de México, 04510 México D.F., Mexico.
| | - Felipe Medrano
- Departamento de Ciencias químico-biológicas, Universidad de Sonora, Rosales y Luis Encinas Johnson s/n, Centro 83000, Hermosillo, Sonora, Mexico
| | - Anatoly K Yatsimirsky
- Facultad de Química, Universidad Nacional Autónoma de México, 04510 México D.F., Mexico.
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4
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Al-Zoubi RM, Al-Jammal WK, McDonald R. Regioselective synthesis of ortho-iodobiphenylboronic acid derivatives: a superior catalyst for carboxylic acid activation. NEW J CHEM 2020. [DOI: 10.1039/c9nj05708k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient and versatile synthesis of ortho-iodobiphenylboronic acids with remarkable catalytic and microbial activities.
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Affiliation(s)
- Raed M. Al-Zoubi
- Department of Chemistry
- Jordan University of Science and Technology
- Irbid
- Jordan
| | - Walid K. Al-Jammal
- Department of Chemistry
- Jordan University of Science and Technology
- Irbid
- Jordan
| | - Robert McDonald
- Department of Chemistry
- Gunning-Lemieux Chemistry Centre
- University of Alberta
- Edmonton
- Canada
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5
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Ruelas‐Alvarez GY, Cárdenas‐Valenzuela AJ, Cruz‐Enríquez A, Höpfl H, Campos‐Gaxiola JJ, Rodríguez‐Rivera MA, Rodríguez‐Molina B. Exploration of the Luminescence Properties of Organic Phosphate Salts of 3‐Quinoline‐ and 5‐Isoquinolineboronic Acid. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Glenda Y. Ruelas‐Alvarez
- Facultad de Ingeniería Mochis Universidad Autónoma de Sinaloa Fuente de Poseidón y Prol. A. Flores S/N C.P. 81223 C.U. Los Mochis, Sinaloa México
| | - A. Jaquelin Cárdenas‐Valenzuela
- Facultad de Ingeniería Mochis Universidad Autónoma de Sinaloa Fuente de Poseidón y Prol. A. Flores S/N C.P. 81223 C.U. Los Mochis, Sinaloa México
| | - Adriana Cruz‐Enríquez
- Facultad de Ingeniería Mochis Universidad Autónoma de Sinaloa Fuente de Poseidón y Prol. A. Flores S/N C.P. 81223 C.U. Los Mochis, Sinaloa México
| | - Herbert Höpfl
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas Universidad Autónoma del Estado de Morelos Av. Universidad 1001, C.P. 62209 Cuernavaca México
| | - José J. Campos‐Gaxiola
- Facultad de Ingeniería Mochis Universidad Autónoma de Sinaloa Fuente de Poseidón y Prol. A. Flores S/N C.P. 81223 C.U. Los Mochis, Sinaloa México
| | - Mario A. Rodríguez‐Rivera
- Centro de Investigaciones en Óptica A.C. (CIO) Loma del Bosque #115, Col. Lomas del Campestre, C.P. 37150 León Guanajuato México
| | - Braulio Rodríguez‐Molina
- Instituto de Química Universidad Nacional Autónoma de México Ciudad Universitaria, Del. Coyoacán Ciudad de México México
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6
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Gozdalik JT, Marek PH, Madura ID, Gierczyk B, Popenda Ł, Schroeder G, Adamczyk-Woźniak A, Sporzyński A. Structures and properties of trifluoromethylphenylboronic acids. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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7
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Structure and Properties of 1,3-Phenylenediboronic Acid: Combined Experimental and Theoretical Investigations. CRYSTALS 2019. [DOI: 10.3390/cryst9020109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The structure and properties of 1,3-phenylenediboronic acid are reported. Molecular and crystal structures were determined by single crystal as well as by powder X-ray diffraction methods. Acidity constant, thermal behavior, and NMR characterization of the title compound were also investigated. In addition to the experimental data, calculations of rotational barrier and intermolecular interaction energies were performed. The compound reveals a two-step acid–base equilibrium with different pKa values. TGA and DSC measurements show a typical dehydration reaction with formation of boroxine. In crystals, hydrogen-bonded dimers with syn-anti conformation of hydroxyl groups form large numbers of ribbon motifs. The 2D potential energy surface scan of rotation of two boronic groups with respect to phenyl ring reveals that the rotation barrier is close to 37 kJ⋅mol−1, which is higher than the double value for the rotation of the boronic group in phenylboronic acid. This effect was ascribed to intermolecular interaction with C–H hydrogen atom located between boronic groups. Furthermore, the molecules in the crystal lattice adopt a less stable molecular conformation most likely resulting from intermolecular forces. These were further investigated by periodic DFT calculations supported by an estimation of dimer interaction energy, and also by topological analysis of electron density in the framework of AIM theory.
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8
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Petroselli M, Mosca S, Martí-Rujas J, Comelli D, Cametti M. Mixed Stacked Charge-Transfer π-Organic Materials Based on Anthracenyl Boronic Acid. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Manuel Petroselli
- Dipartimento di Chimica Materiali e Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Luigi Mancinelli 7 20131 Milan Italy
| | - Sara Mosca
- Dipartimento di Fisica; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Javier Martí-Rujas
- Center for Nano Science and Technology@Polimi; Istituto Italiano di Tecnologia; Via Pascoli 70/3 20133 Milano Italy
| | - Daniela Comelli
- Dipartimento di Fisica; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Massimo Cametti
- Dipartimento di Chimica Materiali e Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Luigi Mancinelli 7 20131 Milan Italy
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9
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Campos-Gaxiola JJ, García-Grajeda BA, Hernández-Ahuactzi IF, Guerrero-Álvarez JA, Höpfl H, Cruz-Enríquez A. Supramolecular networks in molecular complexes of pyridine boronic acids and polycarboxylic acids: synthesis, structural characterization and fluorescence properties. CrystEngComm 2017. [DOI: 10.1039/c7ce00762k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
3- and 4-pyridineboronic acids have been combined with trimesic and pyromellitic acids to give three molecular complexes.
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Affiliation(s)
| | | | | | - Jorge A. Guerrero-Álvarez
- Centro de Investigaciones Químicas
- Instituto de Investigación en Ciencias Básicas y Aplicadas
- Universidad Autónoma del Estado de Morelos
- Cuernavaca
- Mexico
| | - Herbert Höpfl
- Centro de Investigaciones Químicas
- Instituto de Investigación en Ciencias Básicas y Aplicadas
- Universidad Autónoma del Estado de Morelos
- Cuernavaca
- Mexico
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10
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Durka K, Kliś T, Serwatowski J. Crystal structure of (2',3,6'-tri-chloro-biphenyl-2-yl)boronic acid tetra-hydro-furan monosolvate. Acta Crystallogr E Crystallogr Commun 2015; 71:1471-4. [PMID: 26870407 PMCID: PMC4719816 DOI: 10.1107/s205698901502054x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 10/29/2015] [Indexed: 11/21/2022]
Abstract
The title compound, C12H8BCl3O2·C4H8O, crystallizes as a tetra-hydro-furan monosolvate. The boronic acid group adopts a syn-anti conformation and is significantly twisted along the carbon-boron bond by 69.2 (1)°, due to considerable steric hindrance from the 2',6'-di-chloro-phenyl group that is located ortho to the boronic acid substituent. The phenyl rings of the biphenyl are almost perpendicular to one another, with a dihedral angle of 87.9 (1)° between them. In the crystal, adjacent mol-ecules are linked via O-H⋯O inter-actions to form centrosymmetric dimers with R 2 (2)(8) motifs, which have recently been shown to be energetically very favourable. The hy-droxy groups are in an anti conformation and are also engaged in hydrogen-bonding inter-actions with the O atom of the tetra-hydro-furan solvent mol-ecule. Cl⋯Cl halogen-bonding inter-actions [Cl⋯Cl = 3.464 (1) Å] link neigbouring dimers into chains running along [010]. Further aggregation occurs due to an additional Cl⋯Cl halogen bond [Cl⋯Cl = 3.387 (1) Å].
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Affiliation(s)
- Krzysztof Durka
- Physical Chemistry Department, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Tomasz Kliś
- Physical Chemistry Department, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Janusz Serwatowski
- Physical Chemistry Department, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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11
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Flanagan KJ, Senge MO. Crystal structure of 4-(meth-oxy-carbon-yl)phenyl-boronic acid. Acta Crystallogr E Crystallogr Commun 2015; 71:1151-4. [PMID: 26594394 PMCID: PMC4647400 DOI: 10.1107/s2056989015015923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 08/25/2015] [Indexed: 11/12/2022]
Abstract
In the title compound, C8H9BO4, the meth-oxy-carbonyl group is rotated out of the plane of the benzene ring by 7.70 (6)°. In the crystal, mol-ecules are linked via pairs of O-H⋯O hydrogen bonds, involving the boronic acid OH groups, forming inversion dimers. The dimers are linked via O-H⋯O hydrogen bonds, involving a boronic acid OH group and the carbonyl O atom, forming undulating sheets parallel to (10-2). Within the sheets there are also C-H⋯O hydrogen bonds present, also involving the carbonyl O atom. The sheets are linked via C-H⋯π and offset face-to-face π-inter-actions between inversion-related mol-ecules [inter-centroid distance = 3.7843 (16) Å, inter-planar distance = 3.3427 (4) Å and offset = 1.744 Å], forming a three-dimensional structure.
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Affiliation(s)
- Keith J. Flanagan
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Mathias O. Senge
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
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12
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Adamczyk-Woźniak A, Ejsmont K, Gierczyk B, Kaczorowska E, Matuszewska A, Schroeder G, Sporzyński A, Zarychta B. Novel 2,6-disubstituted phenylboronic compounds – Synthesis, crystal structures, solution behaviour and reactivity. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.04.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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13
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Mohy El Dine T, Erb W, Berhault Y, Rouden J, Blanchet J. Catalytic chemical amide synthesis at room temperature: one more step toward peptide synthesis. J Org Chem 2015; 80:4532-44. [PMID: 25849872 DOI: 10.1021/acs.joc.5b00378] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient method has been developed for direct amide bond synthesis between carboxylic acids and amines via (2-(thiophen-2-ylmethyl)phenyl)boronic acid as a highly active bench-stable catalyst. This catalyst was found to be very effective at room temperature for a large range of substrates with slightly higher temperatures required for challenging ones. This methodology can be applied to aliphatic, α-hydroxyl, aromatic, and heteroaromatic acids as well as primary, secondary, heterocyclic, and even functionalized amines. Notably, N-Boc-protected amino acids were successfully coupled in good yields with very little racemization. An example of catalytic dipeptide synthesis is reported.
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Affiliation(s)
- Tharwat Mohy El Dine
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 Boulevard du Maréchal Juin, 14050 Caen, France
| | - William Erb
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 Boulevard du Maréchal Juin, 14050 Caen, France
| | - Yohann Berhault
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 Boulevard du Maréchal Juin, 14050 Caen, France
| | - Jacques Rouden
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 Boulevard du Maréchal Juin, 14050 Caen, France
| | - Jérôme Blanchet
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 Boulevard du Maréchal Juin, 14050 Caen, France
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14
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Madura ID, Adamczyk-Woźniak A, Sporzyński A. Diversified self-association through O–H⋯O hydrogen bonds in crystals of formylphenylboronic acid isomers. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.11.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Noonan G, Leach AG. A mechanistic proposal for the protodeboronation of neat boronic acids: boronic acid mediated reaction in the solid state. Org Biomol Chem 2015; 13:2555-60. [DOI: 10.1039/c4ob02543a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Boronic acids that undergo protodeboronation as solids are stable in solution: the solid state organizes them for reaction.
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Affiliation(s)
| | - Andrew G. Leach
- School of Pharmacy and Biomolecular Sciences
- Liverpool John Moores University
- Liverpool
- UK
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16
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Hernández-Paredes J, Olvera-Tapia AL, Arenas-García JI, Höpfl H, Morales-Rojas H, Herrera-Ruiz D, Gonzaga-Morales AI, Rodríguez-Fragoso L. On molecular complexes derived from amino acids and nicotinamides in combination with boronic acids. CrystEngComm 2015. [DOI: 10.1039/c4ce01934b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Clair S, Abel M, Porte L. Growth of boronic acid based two-dimensional covalent networks on a metal surface under ultrahigh vacuum. Chem Commun (Camb) 2014; 50:9627-35. [DOI: 10.1039/c4cc02678k] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An extensive analysis of the complex mechanisms governing the on-surface polymerisation of boronic acid on a metal surface under vacuum.
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Affiliation(s)
- Sylvain Clair
- Aix Marseille Université
- CNRS
- Université de Toulon
- 13397 Marseille, France
| | - Mathieu Abel
- Aix Marseille Université
- CNRS
- Université de Toulon
- 13397 Marseille, France
| | - Louis Porte
- Aix Marseille Université
- CNRS
- Université de Toulon
- 13397 Marseille, France
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18
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Natarajan P, Schmittel M. ON-OFF luminescence signaling of hybrid organic-inorganic switches. Inorg Chem 2013; 52:8579-90. [PMID: 23841568 DOI: 10.1021/ic400676j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The dyads 1OFF and 2OFF were prepared by combining the inorganic luminophores [Ru(phen)2(2-[imidazol-2-yl]pyridine)](2+) and [Re(CO)3Cl(2-[imidazol-2-yl]pyridine)] with 2-(anthracen-9-yl)-4-methylphenol as a second photoactive moiety. In both cases, the inorganic unit operates as the emitter, whereas the organic part acts as a controller. Emission of the inorganic luminophore can be reversibly switched ON and OFF by adjusting the energetic level of the (3)π-π* state of the appended anthracene unit through either dearomatization using a photohydration or aromatization applying a thermal dehydration. Emission of both switches is reversibly recorded and erased multiple times without significant degradation.
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Affiliation(s)
- Palani Natarajan
- Center of Micro- and Nanochemistry and Engineering, Department of Chemistry and Biology, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Straße 2, D-57068 Siegen, Germany.
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19
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Adamczyk-Woźniak A, Brzózka Z, Dąbrowski M, Madura ID, Scheidsbach R, Tomecka E, Żukowski K, Sporzyński A. Influence of the ortho-methoxyalkyl substituent on the properties of phenylboronic acids. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.09.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Cyrański MK, Klimentowska P, Rydzewska A, Serwatowski J, Sporzyński A, Stępień DK. Towards a monomeric structure of phenylboronic acid: The influence of ortho-alkoxy substituents on the crystal structure. CrystEngComm 2012. [DOI: 10.1039/c2ce25657f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Roşca S, Olaru M, Raţ CI. (2,4,6-Trimethyl-phen-yl)boronic acid-triphenyl-phosphine oxide (1/1). Acta Crystallogr Sect E Struct Rep Online 2012; 68:o31. [PMID: 22259536 PMCID: PMC3254394 DOI: 10.1107/s1600536811051609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Accepted: 11/30/2011] [Indexed: 11/30/2022]
Abstract
In the crystal structure of the title compound, C(9)H(13)BO(2)·C(18)H(15)OP, there are O-H⋯O hydrogen bonds between the O atom of triphenyl-phosphine oxide and one hy-droxy group of the boronic acid. Boronic acid mol-ecules form inversion-related hydrogen-bonded dimers in an R(2) (2)(8) motif. The structure is consolidated by inter-molecular C-H⋯O bonds and C-H⋯π inter-actions.
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Affiliation(s)
- Sorin Roşca
- Universitatea Babeş-Bolyai, Facultatea de Chimie şi Inginerie Chimicã, 11 Arany Janos, 400028 Cluj-Napoca, Romania
| | - Marian Olaru
- Universitatea Babeş-Bolyai, Facultatea de Chimie şi Inginerie Chimicã, 11 Arany Janos, 400028 Cluj-Napoca, Romania
| | - Ciprian I. Raţ
- Universitatea Babeş-Bolyai, Facultatea de Chimie şi Inginerie Chimicã, 11 Arany Janos, 400028 Cluj-Napoca, Romania
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22
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Vega A, Luna R, Tlahuext H, Höpfl H. Bis[3-(dihydroxy-boryl)anilinium] sulfate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o1035-6. [PMID: 21579098 PMCID: PMC2979015 DOI: 10.1107/s1600536810012092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Accepted: 03/30/2010] [Indexed: 05/26/2023]
Abstract
In the title compound, 2C6H9BNO2+·SO42−, the dihydroxyboryl group of one of the two independent boronic acid molecules participates in (B)O—H⋯OB and N—H⋯OB hydrogen bonds, while the second is involved mainly in the formation of the charge-assisted heterodimeric synthon –B(OH)2⋯−O2SO2−. These aggregates are further connected through N—H⋯Osulfate interactions, forming a complex three-dimensional hydrogen-bonded network.
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Affiliation(s)
- Araceli Vega
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209, Cuernavaca, Mexico
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23
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Vega A, Zarate M, Tlahuext H, Höpfl H. Benzene-1,4-diboronic acid-4,4'-bipyridine-water (1/2/2). Acta Crystallogr C 2010; 66:o219-21. [PMID: 20354315 DOI: 10.1107/s0108270110009121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Accepted: 03/10/2010] [Indexed: 11/10/2022] Open
Abstract
In the presence of water, benzene-1,4-diboronic acid (1,4-bdba) and 4,4'-bipyridine (4,4'-bpy) form a cocrystal of composition (1,4-bdba)(4,4'-bpy)(2)(H(2)O)(2), in which the molecular components are organized in two, so far unknown, cyclophane-type hydrogen-bonding patterns. The asymmetric unit of the title compound, C(6)H(8)B(2)O(4).2C(10)H(8)N(2).2H(2)O, contains two 4,4'-bpy, two water molecules and two halves of 1,4-bdba molecules arranged around crystallographic inversion centers. The occurrence of O-H...O and O-H...N hydrogen bonds involving the water molecules and all O atoms of boronic acid gives rise to a two-dimensional hydrogen-bonded layer structure that develops parallel to the (01-4) plane. This supramolecular organization is reinforced by pi-pi interactions between symmetry-related 4,4'-bpy molecules.
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Affiliation(s)
- Araceli Vega
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, CP 62209, Cuernavaca, Mexico
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B···π-aromatic and C–H···B interactions in co-crystals of aromatic amine N-oxides with p-phenylenediboronic acid. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.11.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Luliński S, Zajac K. Selective Generation of Lithiated Benzonitriles: the Importance of Reaction Conditions. J Org Chem 2008; 73:7785-8. [DOI: 10.1021/jo8013808] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sergiusz Luliński
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Katarzyna Zajac
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
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