1
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Jiang Z, Kuninobu Y. Synthesis of a novel twisted π-conjugated macrocycle via double Friedel-Crafts reaction and its physical properties. Chem Commun (Camb) 2024; 60:7642-7645. [PMID: 38963239 DOI: 10.1039/d4cc00890a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
We synthesized a cyclic molecule from diarylalkynes and Meldrum's acid derivatives as the methylenation reagent via double Friedel-Crafts reaction. Single-crystal X-ray structure analysis confirmed the twisted structure of the molecule. We also investigated their physical properties and homoconjugation by UV-Vis, photoluminescence, DFT and TD-DFT calculations.
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Affiliation(s)
- Zhiyan Jiang
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan
| | - Yoichiro Kuninobu
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan.
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan
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2
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Zheng DS, Zhao F, Gu Q, You SL. Rh(III)-catalyzed atroposelective C-H alkynylation of 1-aryl isoquinolines with hypervalent iodine-alkyne reagents. Chem Commun (Camb) 2024; 60:6753-6756. [PMID: 38863330 DOI: 10.1039/d4cc01785d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
An efficient Rh(III)-catalyzed enantioselective C-H alkynylation of isoquinolines is disclosed. The C-H alkynylation of 1-aryl isoquinolines with hypervalent iodine-alkyne reagents proceeded in DMA at room temperature in the presence of 2.5 mol% chiral SCpRh(III) complex along with 20 mol% AgSbF6, providing axially chiral alkynylated 1-aryl isoquinolines in excellent yields (up to 93%) and enantioselectivity (up to 95% ee). The diverse transformations of the product further enhance the potential utility of this reaction.
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Affiliation(s)
- Dong-Song Zheng
- Chang-Kung Chuang Institute, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
- New Cornerstone Science Laboratory, State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
| | - Fangnuo Zhao
- New Cornerstone Science Laboratory, State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
| | - Qing Gu
- New Cornerstone Science Laboratory, State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
| | - Shu-Li You
- Chang-Kung Chuang Institute, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
- New Cornerstone Science Laboratory, State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
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3
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Grinde NA, Kehoe ZR, Vang HG, Mancheski LJ, Bosch E, Southern SA, Bryce DL, Bowling NP. Rapid Access to Encapsulated Molecular Rotors via Coordination-Driven Macrocycle Formation. Chemistry 2023; 29:e202301745. [PMID: 37308699 DOI: 10.1002/chem.202301745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/14/2023]
Abstract
Macrocycle formation that relies upon trans metal coordination of appropriately placed pyridine ligands within an arylene ethynylene construct provides rapid and reliable access to molecular rotators encapsulated within macrocyclic stators. Showing no significant close contacts to the central rotators, X-ray crystallography of AgI -coordinated macrocycles provides plausibility for unobstructed rotation or wobbling of rotators within the central cavity. Solid-state 13 C NMR of PdII -coordinated macrocycles supports the notion of unobstructed movement of simple arenes in the crystal lattice. Solution 1 H NMR studies indicate complete and immediate macrocycle formation upon the introduction of PdII to the pyridyl-based ligand at room temperature. Moreover, the formed macrocycle is stable in solution; a lack of significant changes in the 1 H NMR spectrum upon cooling to -50 °C is consistent with the absence of dynamic behavior. The synthetic route to these macrocycles is expedient and modular, providing access to rather complex constructs in four simple steps involving Sonogashira coupling and deprotection reactions.
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Affiliation(s)
- Noah A Grinde
- Chemistry Department, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, WI, 54481, USA
| | - Zachary R Kehoe
- Chemistry Department, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, WI, 54481, USA
| | - Herh G Vang
- Chemistry Department, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, WI, 54481, USA
| | - Lucas J Mancheski
- Chemistry Department, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, WI, 54481, USA
| | - Eric Bosch
- Chemistry and Biochemistry Department, Missouri State University, 901 South National Avenue, Springfield, MO, 65897, USA
| | - Scott A Southern
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - David L Bryce
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Nathan P Bowling
- Chemistry Department, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, WI, 54481, USA
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4
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Ma X, Wang L, Meng X, Li W, Wang Q, Gu Y, Qiu L. NHC-mediated photocatalytic deoxygenation of alcohols for the synthesis of internal alkynes via a Csp 3-Csp coupling reaction. Org Biomol Chem 2023; 21:6693-6696. [PMID: 37548245 DOI: 10.1039/d3ob01066j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
NHC-mediated deoxygenation of alcohols under photocatalytic conditions is described. The process provides various alkyl radicals, which can react with 1-bromoalkyne via Csp3-Csp coupling to afford internal alkynes in moderate to good yields. The method offers a new and convenient approach to synthesize internal alkynes.
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Affiliation(s)
- Xueji Ma
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Liujie Wang
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Xiaoqing Meng
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Wenbo Li
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Qin Wang
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Yuke Gu
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Lingna Qiu
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
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5
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Wu H, Chen S, Xiao D, Li F, Zhou K, Yin X, Liu C, He X, Shang Y. Visible-Light-Mediated Deacylated Alkynylation of Unstrained Ketone. Org Lett 2023; 25:1166-1171. [PMID: 36786500 DOI: 10.1021/acs.orglett.3c00145] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Deconstructive alkynylation of an unstrained ketone catalyzed by an organic photocatalyst under blue light irradiation is reported for the first time. A broad substrate scope with up to 63 examples, excellent functional group tolerance, and gram scale reaction demonstrated the practicality of this novel alkynylation method. The dihydroquinazolinone derivative of trifluoroacetophenone had been proved to have potential as a novel trifluoromethylation reagent after working well for the trifluoromethylation reaction with various alkynyl bromides.
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Affiliation(s)
- Hao Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Shuguang Chen
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Dengmengfei Xiao
- Shenzhen Grubbs Institute and Department of Chemistry, Guang-dong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Feng Li
- Institute of Advanced Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Kaiyuan Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Xiaocui Yin
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Chunni Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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6
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Komori T, Tsurumaki E, Toyota S. Synthesis, Structures, and Complexation with Phenolic Guests of Acridone-Incorporated Arylene-Ethynylene Macrocyclic Compounds. Chem Asian J 2023; 18:e202201003. [PMID: 36380477 PMCID: PMC10107286 DOI: 10.1002/asia.202201003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/03/2022] [Indexed: 11/17/2022]
Abstract
Acridone units were incorporated into the arylene-ethynylene structure as polar arene units. Cyclic trimers consisting of three acridone-2,7-diyl units and three 1,3-phenylene units were synthesized by Sonogashira couplings via stepwise or direct route. X-ray analysis revealed that the trimer had a nearly planar macrocyclic framework with a cavity surrounded by three carbonyl groups. In contrast, the corresponding tetramer had a nonplanar macrocyclic framework. 1 H NMR measurements showed that the trimer formed a 1 : 1 complex as a macrocyclic host with dihydric phenol guests, and the association constants were determined to be ca. 1.0×103 L mol-1 for hydroquinone or resorcinol guests in CDCl3 at 298 K. The calculated structures of these complexes by the DFT method supported the presence of two sets of OH⋅⋅⋅O=C hydrogen bonds between the host and guest molecules. The spectroscopic data of the cyclic trimers and tetramers are compared with those of reference acridone compounds.
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Affiliation(s)
- Takashi Komori
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, 152-8551, Tokyo, Japan
| | - Eiji Tsurumaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, 152-8551, Tokyo, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, 152-8551, Tokyo, Japan
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7
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Körner L, Ho LP, Puchta R, Stanger A, Tamm M. Dimorpholinoacetylene and Its Use for the Synthesis of Tetraaminocyclobutadiene Species. Chemistry 2022; 28:e202202737. [PMID: 36148808 PMCID: PMC9828195 DOI: 10.1002/chem.202202737] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Indexed: 01/12/2023]
Abstract
The new diaminoacetylene (DAA) dimorpholinoacetylene (3) was prepared from 1,1-dimorpholinoethene (1) by bromination to form the dibromoketene aminal 2, which upon lithiation afforded 3 through a Fritsch-Buttenberg-Wiechell rearrangement. Heating 3 at elevated temperatures resulted in a complete conversion into the dimer 1,1,2,4-tetramorpholino-1-buten-3-yne (4), which was used for the synthesis of four-membered cyclic bent allene (CBA) transition-metal complexes of the type [(CBA)MLn ] (5-7; MLn =AuCl, RhCl(COD), RhCl(CO)2 ; CBA=1,3,4,4-tetramorpholino-1,2-cyclobutadiene; COD=1,5-cyclooctadiene). The reaction of 3 with tetraethylammonium bromide gave 1,2,3,4-tetramorpholinocyclobutenylium bromide (8), which reacted with bromine to form 1,2,3,4-tetra(morpholino)cyclobutenediylium bis(tribromide) (9). Compound 9 represents the first fully characterized compound containing a tetraaminocyclobutadiene dication and displays a nearly planar C4 N4 core as shown by X-ray diffraction analysis. Detailed quantum chemical calculations were performed to assess the aromaticity of tetraaminocyclubutadiene dications by employing the Nucleus Independent Chemical Shift (NICS) method and current density analysis.
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Affiliation(s)
- Lukas Körner
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Luong Phong Ho
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Ralph Puchta
- Department Chemie und PharmazieFriedrich-Alexander Universität Erlangen-NürnbergEgerlandstr. 191058ErlangenGermany
| | - Amnon Stanger
- Schulich Department of Chemistry, TechnionHaifa32000Israel
| | - Matthias Tamm
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
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8
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Feng W, Jiang Q, Wang Z, Zang J, Wang G, Liu K, Peng H, Liu T, Ding L, Fang Y. Rigid Bay-Conjugated Perylene Bisimide Rotors: Solvent-Induced Excited-State Symmetry Breaking and Resonance-Enhanced Two-Photon Absorption. J Phys Chem B 2022; 126:4939-4947. [PMID: 35754397 DOI: 10.1021/acs.jpcb.2c02620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Intramolecular charge transfer and excited-state symmetry breaking have a significant effect on the nonlinear optical properties of multipolar chromophores. Rigid and nonplanar perylene bisimide derivatives (PBIs) functionalized at bay positions were comparatively and comprehensively investigated. In apolar solvents, two quadrupolar molecular rotors showed an obvious decrease of the A0-0/A0-1 ratios, suggesting strong exciton coupling with the adjacent PBI units initiated by the π-π stacking. The vanishment of the preferable dimer emission in polar solvents supported the plausible phenomena of excited-state symmetry breaking, thanks to the facile rotation around the rigid linkers. Comparative femtosecond transition absorption studies confirmed their notable differences in relaxation dynamics and the generation of radical anions (PBI•-) and cations (PBI•+). The maxima two-photon absorption (2PA) wavelengths obtained for the molecular rotors were slightly red-shifted to 670 nm with intrinsic resonance-enhanced characteristics, reflecting the synergistic effect of functional positions and molecular architectures. Meanwhile, the obvious increase of significant 2PA cross-section values in polar solvents illustrated the stabilization of the symmetry-broken dipolar states. Further femtosecond Z-scan also manifested the contribution of excited-state dynamics on the nonlinear optical properties of multipolar chromophores.
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Affiliation(s)
- Wan Feng
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Qingwei Jiang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Zhaolong Wang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Jianyang Zang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Gang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Ke Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Haonan Peng
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Liping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
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9
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Brosz M, Michelarakis N, Bunz UHF, Aponte-Santamaría C, Gräter F. Martini 3 coarse-grained force field for poly( para-phenylene ethynylene)s. Phys Chem Chem Phys 2022; 24:9998-10010. [PMID: 35412534 DOI: 10.1039/d1cp04237h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Poly(para-phenylene ethynylene)s, or short PPEs, are a class of conjugated and semi-flexible polymers with a strongly delocalized π electron system and increased chain stiffness. Due to this, PPEs have a wide range of technological applications. Although the material properties of single-chains or mixtures of few PPE chains have been studied in detail, the properties of large assemblies remain to be fully explored. Here, we developed a coarse-grained model for PPEs with the Martini 3 force field to enable computational studies of PPEs in large-scale assembly. We used an optimization geometrical approach to take the shape of the π conjugated backbone into account and also applied an additional angular potential to tune the mechanical bending stiffness of the polymer. Our Martini 3 model reproduces key structural and thermodynamic observables of single PPE chains and mixtures, such as persistence length, density, packing and stacking. We show that chain entanglement increases with the expense of nematic ordering with growing PPE chain length. With the Martini 3 PPE model at hand, we are now able to cover large spatio-temporal scales and thereby to uncover key aspects for the structural organization of PPE bulk systems. The model is also predicted to be of high applicability to investigate out-of-equilibrium behavior of PPEs under mechanical force.
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Affiliation(s)
- Matthias Brosz
- Heidelberg Institute for Theoretical Studies, Am Schlosswolfsbrunnenweg 35, 69118 Heidelberg, Germany. .,Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Nicholas Michelarakis
- Heidelberg Institute for Theoretical Studies, Am Schlosswolfsbrunnenweg 35, 69118 Heidelberg, Germany.
| | - Uwe H F Bunz
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Camilo Aponte-Santamaría
- Heidelberg Institute for Theoretical Studies, Am Schlosswolfsbrunnenweg 35, 69118 Heidelberg, Germany.
| | - Frauke Gräter
- Heidelberg Institute for Theoretical Studies, Am Schlosswolfsbrunnenweg 35, 69118 Heidelberg, Germany. .,Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
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10
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Özcan S, Uslu Kobak R, Budak O, KOCA ATIF, BAYIR ZEHRA. Synthesis, Electrochemistry, Spectroelectrochemistry, and Electrochromism of Metallophthalocyanines substituted with four (2,4,5‐trimethylphenyl)ethynyl groups. ELECTROANAL 2022. [DOI: 10.1002/elan.202100693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Nishino T, Martin CJ, Yasuhara K, Rapenne G. Nanocars based on Polyaromatic or Porphyrinic Chassis. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.1050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Colin J. Martin
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
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12
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Cheng Y, Rong X, Xia M, Zhang Z, Wang JR, Mei X. Conformational polymorphs of isotretinoin and their impact on physicochemical and biological properties. Int J Pharm 2021; 610:121222. [PMID: 34699948 DOI: 10.1016/j.ijpharm.2021.121222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/17/2021] [Accepted: 10/19/2021] [Indexed: 10/20/2022]
Abstract
Isotretinoin is the first-line drug for treatment of severe acne. Only one polymorph was reported even though it has been launched for nearly 40 years, and its clinic application was however limited by its stability and solubility challenges. In our study, two new polymorphs of isotretinoin were discovered and fully characterized. The transformation relationships between these solid forms were fully discussed, and a visible color change during single-crystal-to-single-crystal phase transition with the conformational change was investigated. Form II is determined to be thermodynamic stable form at room temperature, but metastable form at body temperature. The results show that form II is an ideal solid state possessing both superior thermal stability (60℃, open air) and higher absorption once delivered into body. The thermal stability can be associated with the crystal structure such as torsion angle. The relative bioavailability of form II is higher than form I as expected, and the bioavailability of form II formulation is about 2 times as that of the marketed form I capsule. Therefore, form II formulation could provide an alternative for better performing isotretinoin.
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Affiliation(s)
- Yinxiang Cheng
- Pharmaceutical Analytical & Solid-State Chemistry Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Xiaoyi Rong
- Pharmaceutical Analytical & Solid-State Chemistry Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Mengyuan Xia
- Pharmaceutical Analytical & Solid-State Chemistry Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Zaiyong Zhang
- Pharmaceutical Analytical & Solid-State Chemistry Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jian-Rong Wang
- Pharmaceutical Analytical & Solid-State Chemistry Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Xuefeng Mei
- Pharmaceutical Analytical & Solid-State Chemistry Research Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China.
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13
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Hu T, Wang L, Li J, Zhao Y, Cheng J, Li W, Chang Z, Sun C. A new fluorescent sensor L based on fluorene-naphthalene Schiff base for recognition of Al3+ and Cr3+. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120421] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Bertling J, Thom KA, Geenen S, Jeuken H, Presser L, Müller TJJ, Gilch P. Synthesis and Photophysics of Water-Soluble Psoralens with Red-Shifted Absorption. Photochem Photobiol 2021; 97:1534-1547. [PMID: 34181757 DOI: 10.1111/php.13480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/24/2021] [Indexed: 11/26/2022]
Abstract
8-Methoxypsoralen (8-MOP) serves as a PUVA (psoralen + UV-A) agent in the treatment of certain skin diseases. Derivatives of 8-MOP with cationic aromatic substituents at the five positions were synthesized and characterized by steady-state, femtosecond and nanosecond spectroscopy as well as cyclic voltammetry. The aromatic substituents' positive charge increases the water solubility and the affinity toward intercalation into DNA. The aromatic substituents were supposed to lower the psoralen S1 energy and thereby suppress a photo-induced electron transfer (PET) with guanine-bearing DNA. Such a suppression of this PET is expected to increase the propensity of psoralens to photo-addition to DNA. For derivatives bearing methylpyridinium residues, femtosecond spectroscopy revealed an intramolecular PET occurring on the picosecond time scale. This PET precludes the population of the triplet state. As triplet states are the precursor state for the photo-addition to DNA, their intermolecular PET renders these derivatives ineffective in terms of PUVA. For two derivatives bearing trimethylphenylammonium moieties, such an intramolecular PET does not occur and the triplet state is populated. Surprisingly, these compounds also exhibit no PUVA activity. Based on these findings, implications for further optimization of PUVA agents are discussed.
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Affiliation(s)
- Janina Bertling
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Kristoffer A Thom
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Sarah Geenen
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Hannah Jeuken
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Lysander Presser
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Thomas J J Müller
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Peter Gilch
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
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15
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Zhu J, Hayashi H, Chen M, Xiao C, Matsuo K, Aratani N, Zhang L, Yamada H. Synthesis and Evaluation of Charge Transport Property of Ethynylene‐Bridged Anthracene Oligomers. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Juanjuan Zhu
- Division of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma 630‐0192 Japan
| | - Hironobu Hayashi
- Division of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma 630‐0192 Japan
| | - Meng Chen
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Chengyi Xiao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Kyohei Matsuo
- Division of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma 630‐0192 Japan
| | - Naoki Aratani
- Division of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma 630‐0192 Japan
| | - Lei Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Hiroko Yamada
- Division of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma 630‐0192 Japan
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16
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Abstract
The self-assembly of foldamers into macrocycles is a simple approach to non-biological higher-order structure. Previous work on the co-assembly of ortho-phenylene foldamers with rod-shaped linkers has shown that folding and self-assembly affect each other; that is, the combination leads to new emergent behavior, such as access to otherwise unfavorable folding states. To this point this relationship has been passive. Here, we demonstrate control of self-assembly by manipulating the foldamers' conformational energy surfaces. A series of o-phenylene decamers and octamers have been assembled into macrocycles using imine condensation. Product distributions were analyzed by gel-permeation chromatography and molecular geometries extracted from a combination of NMR spectroscopy and computational chemistry. The assembly of o-phenylene decamers functionalized with alkoxy groups or hydrogens gives both [2 + 2] and [3 + 3] macrocycles. The mixture results from a subtle balance of entropic and enthalpic effects in these systems: the smaller [2 + 2] macrocycles are entropically favored but require the oligomer to misfold, whereas a perfectly folded decamer fits well within the larger [3 + 3] macrocycle that is entropically disfavored. Changing the substituents to fluoro groups, however, shifts assembly quantitatively to the [3 + 3] macrocycle products, even though the structural changes are well-removed from the functional groups directly participating in bond formation. The electron-withdrawing groups favor folding in these systems by strengthening arene–arene stacking interactions, increasing the enthalpic penalty to misfolding. The architectural changes are substantial even though the chemical perturbation is small: analogous o-phenylene octamers do not fit within macrocycles when perfectly folded, and quantitatively misfold to give small macrocycles regardless of substitution. Taken together, these results represent both a high level of structural control in structurally complex foldamer systems and the demonstration of large-amplitude structural changes as a consequence of a small structural effects. The folding propensity of ortho-phenylene foldamers dictates the outcome of their self-assembly into macrocycles.![]()
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Affiliation(s)
- Viraj C Kirinda
- Department of Chemistry & Biochemistry, Miami University Oxford OH 45056 USA
| | - C Scott Hartley
- Department of Chemistry & Biochemistry, Miami University Oxford OH 45056 USA
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17
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Doettinger F, Yang Y, Schmid MA, Frey W, Karnahl M, Tschierlei S. Cross-Coupled Phenyl- and Alkynyl-Based Phenanthrolines and Their Effect on the Photophysical and Electrochemical Properties of Heteroleptic Cu(I) Photosensitizers. Inorg Chem 2021; 60:5391-5401. [PMID: 33764043 DOI: 10.1021/acs.inorgchem.1c00416] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
With the aims of increasing the antenna system and improving the photophysical properties of Cu(I)-based photosensitizers, the backbone of 2,9-dimethyl-1,10-phenanthroline was selectively extended in the 5,6-position. Applying specifically tailored Suzuki-Miyaura and "chemistry-on-the-complex" Sonogashira cross-coupling reactions enabled the development of two sets of structurally related diimine ligands with a broad variety of different phenyl- and alkynyl-based substituents. The resulting 11 novel heteroleptic Cu(I) complexes, including five solid-state structures, were studied with respect to their structure-property relationships. Both sets of substituents are able to red-shift the absorption maxima and to increase the absorptivity. For the alkynyl-based complexes, this is accompanied by a significant anodic shift of the reduction potentials. The phenyl-based substituents strongly influence the emission wavelength and quantum yield of the resulting Cu(I) complexes and lead to an increase in the emission lifetime of up to 504 ns, which clearly indicates competition with the benchmark system [(xantphos)Cu(bathocuproine)]PF6.
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Affiliation(s)
- Florian Doettinger
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.,Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Brauschweig, Gaußstraße 17, 38106 Braunschweig, Germany
| | - Yingya Yang
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Brauschweig, Gaußstraße 17, 38106 Braunschweig, Germany
| | - Marie-Ann Schmid
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Brauschweig, Gaußstraße 17, 38106 Braunschweig, Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Michael Karnahl
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Stefanie Tschierlei
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Brauschweig, Gaußstraße 17, 38106 Braunschweig, Germany
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18
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Fard ST, Sekine K, Farshadfar K, Rominger F, Rudolph M, Ariafard A, Hashmi ASK. Gold-Catalyzed Annulation of 1,8-Dialkynylnaphthalenes: Synthesis and Photoelectric Properties of Indenophenalene-Based Derivatives. Chemistry 2021; 27:3552-3559. [PMID: 33210327 PMCID: PMC7898384 DOI: 10.1002/chem.202004846] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Indexed: 12/15/2022]
Abstract
A simple gold-catalyzed annulation of 1,8-dialkynylnaphthalenes utilizing a cationic gold catalyst was developed. Such a peri-position of two alkynyl substituents has not been studied in gold catalysis before. Dependent on the substrate, the reactions either follow a mechanism involving vinyl cation intermediates or involve a dual gold catalysis mechanism which in an initial 6-endo-dig-cyclization generates gold(I) vinylidene intermediates that are able to insert into C-H bonds. Indenophenalene derivatives were obtained in moderate to high yields. In addition, the bidirectional gold-catalyzed annulation of tetraynes provided even larger conjugated π-systems. The optoelectronic properties of the products were also investigated.
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Affiliation(s)
- Sara Tavakkoli Fard
- Organisch-Chemisches InstitutHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Kohei Sekine
- Organisch-Chemisches InstitutHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
- Department of Molecular and Material SciencesInterdisciplinary Graduate School of Engineering SciencesInstitute for Materials Chemistry and EngineeringKyushu University6-1 Kasugakoen, Kasuga-shiFukuoka816-8580Japan
| | - Kaveh Farshadfar
- Department of ChemistryIslamic Azad University, Central Tehran Branch, PoonakTehran1469669191Iran
| | - Frank Rominger
- Organisch-Chemisches InstitutHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Matthias Rudolph
- Organisch-Chemisches InstitutHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Alireza Ariafard
- School of Physical SciencesUniversity of TasmaniaPrivate Bag 75HobartTAS7001Australia
| | - A. Stephen K. Hashmi
- Organisch-Chemisches InstitutHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
- Chemistry DepartmentFaculty of Science King Abdulaziz University (KAU)Jeddah21589Saudi Arabia
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19
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Bellina F, Biagetti M, Guariento S, Lessi M, Fausti M, Ronchi P, Rosadoni E. Ligand-free Pd/Ag-mediated dehydrogenative alkynylation of imidazole derivatives. RSC Adv 2021; 11:25504-25509. [PMID: 35478867 PMCID: PMC9036978 DOI: 10.1039/d1ra05303e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 07/19/2021] [Indexed: 01/12/2023] Open
Abstract
A variety of 2-alkynyl(benzo)imidazoles have been synthesized by dehydrogenative alkynylation of (benzo)imidazoles with terminal alkyne in NMP under air in the presence of Ag2CO3 as the oxidant and Pd(OAc)2 as the catalyst precursor. The data obtained in this study support a reaction mechanism involving a non-concerted metalation deprotonation (n-CMD) pathway. The regioselective synthesis of 2-alkynyl(benz)imidazoles was successfully achieved by Pd(ii)/Ag(i)-mediated dehydrogenative alkynylation of the corresponding (benz)imidazoles with terminal alkynes in an open vessel.![]()
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Affiliation(s)
- Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Matteo Biagetti
- Chemistry Research and Drug Design
- Chiesi Farmaceutici S.p.A
- Centro Ricerche
- 43122 Parma
- Italy
| | - Sara Guariento
- Chemistry Research and Drug Design
- Chiesi Farmaceutici S.p.A
- Centro Ricerche
- 43122 Parma
- Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Mattia Fausti
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Paolo Ronchi
- Chemistry Research and Drug Design
- Chiesi Farmaceutici S.p.A
- Centro Ricerche
- 43122 Parma
- Italy
| | - Elisabetta Rosadoni
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
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20
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Hodecker M, Kozhemyakin Y, Weigold S, Rominger F, Freudenberg J, Dreuw A, Bunz UHF. A Doubly Bridged Bis(phenylethynyl)benzene: Different from a Twisted Tolan. Chemistry 2020; 26:16990-16993. [PMID: 33017073 PMCID: PMC7839586 DOI: 10.1002/chem.202002552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 10/01/2020] [Indexed: 11/25/2022]
Abstract
The synthesis of a doubly bridged 1,4‐bis(phenylethynyl)benzene is reported. The target displays photophysical properties, distinctly different from that of its congeners, the singly bridged tolans. Quantum‐chemical calculations suggest a lack of planarization of the bridged bis(phenylethynyl)benzene in the first excited state.
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Affiliation(s)
- Manuel Hodecker
- Interdiziplinäres Zentrum für Wissenschaftliches Rechnen Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 205 69120 Heidelberg Germany
| | - Yury Kozhemyakin
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Svenja Weigold
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Andreas Dreuw
- Interdiziplinäres Zentrum für Wissenschaftliches Rechnen Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 205 69120 Heidelberg Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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21
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Liu Z, Budiman YP, Tian Y, Friedrich A, Huang M, Westcott SA, Radius U, Marder TB. Copper-Catalyzed Oxidative Cross-Coupling of Electron-Deficient Polyfluorophenylboronate Esters with Terminal Alkynes. Chemistry 2020; 26:17267-17274. [PMID: 32697365 PMCID: PMC7821263 DOI: 10.1002/chem.202002888] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Indexed: 01/13/2023]
Abstract
We report herein a mild procedure for the copper-catalyzed oxidative cross-coupling of electron-deficient polyfluorophenylboronate esters with terminal alkynes. This method displays good functional group tolerance and broad substrate scope, generating cross-coupled alkynyl(fluoro)arene products in moderate to excellent yields. Thus, it represents a simple alternative to the conventional Sonogashira reaction.
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Affiliation(s)
- Zhiqiang Liu
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Yudha P. Budiman
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Department of ChemistryFaculty of Mathematics and Natural SciencesUniversitas Padjadjaran45363JatinangorIndonesia
| | - Ya‐Ming Tian
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Mingming Huang
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Stephen A. Westcott
- Department of Chemistry and BiochemistryMount Allison UniversitySackvilleNB E4L 1G8Canada
| | - Udo Radius
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Todd B. Marder
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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22
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Fajardo J, Schwan J, Kramer WW, Takase MK, Winkler JR, Gray HB. Third-Generation W(CNAr)6 Photoreductants (CNAr = Fused-Ring and Alkynyl-Bridged Arylisocyanides). Inorg Chem 2020; 60:3481-3491. [DOI: 10.1021/acs.inorgchem.0c02912] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Javier Fajardo
- Beckman Institute, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Josef Schwan
- Beckman Institute, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Wesley W. Kramer
- Beckman Institute, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Michael K. Takase
- Beckman Institute, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Jay R. Winkler
- Beckman Institute, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Harry B. Gray
- Beckman Institute, California Institute of Technology (Caltech), Pasadena, California 91125, United States
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23
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Wang LH, Hayase N, Sugiyama H, Nogami J, Uekusa H, Tanaka K. Synthesis, Structures, and Properties of Highly Strained Cyclophenylene-Ethynylenes with Axial and Helical Chirality. Angew Chem Int Ed Engl 2020; 59:17951-17957. [PMID: 32618087 DOI: 10.1002/anie.202006959] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Indexed: 12/13/2022]
Abstract
Single and double cyclophenylene-ethynylenes (CPEs) with axial and helical chirality have been synthesized by the Sonogashira cross-coupling of di- and tetraethynyl biphenyls with a U-shaped prearomatic diiodoparaphenylene followed by reductive aromatization. X-ray crystallographic analyses and DFT calculations revealed that the CPEs possess highly twisted bent structures. Bend angles on the edge of the paraphenylene units were close to the value of [5]cycloparaphenylene (CPP)-the smallest CPP to date. The double and single CPEs possessed stable chirality despite flexible biphenyl structures because of the high strain in the diethynyl-paraphenylene moiety. In both the single and double CPEs, orbital interactions along the biphenyl axis were observed by DFT calculations in LUMO and LUMO+2 of the single CPE and LUMO+1 of the double CPE, which likely cause lowering of these orbital energies. Concerning chiroptical properties: boosting of the gabs value was observed in the biphenyl-based double CPE, as well as the binaphthyl-based single CPE, compared to the biphenyl-based single CPE.
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Affiliation(s)
- Li-Hsiang Wang
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Norihiko Hayase
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Haruki Sugiyama
- Research and Education Center for Natural Sciences, Keio University, Hiyoshi 4-1-1, Kohoku, Yokohama, Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hidehiro Uekusa
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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24
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Rodygin KS, Ledovskaya MS, Voronin VV, Lotsman KA, Ananikov VP. Calcium Carbide: Versatile Synthetic Applications, Green Methodology and Sustainability. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001098] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Konstantin S. Rodygin
- Institute of Chemistry Saint Petersburg State University Universitetskiy pr. 26 198504 Saint Petersburg Russia
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky pr. 47 119991 Moscow Russia
| | - Maria S. Ledovskaya
- Institute of Chemistry Saint Petersburg State University Universitetskiy pr. 26 198504 Saint Petersburg Russia
| | - Vladimir V. Voronin
- Institute of Chemistry Saint Petersburg State University Universitetskiy pr. 26 198504 Saint Petersburg Russia
| | - Kristina A. Lotsman
- Institute of Chemistry Saint Petersburg State University Universitetskiy pr. 26 198504 Saint Petersburg Russia
| | - Valentine P. Ananikov
- Institute of Chemistry Saint Petersburg State University Universitetskiy pr. 26 198504 Saint Petersburg Russia
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky pr. 47 119991 Moscow Russia
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25
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Wang L, Hayase N, Sugiyama H, Nogami J, Uekusa H, Tanaka K. Synthesis, Structures, and Properties of Highly Strained Cyclophenylene–Ethynylenes with Axial and Helical Chirality. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006959] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Li‐Hsiang Wang
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Norihiko Hayase
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Haruki Sugiyama
- Research and Education Center for Natural Sciences Keio University Hiyoshi 4-1-1, Kohoku Yokohama Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Hidehiro Uekusa
- Department of Chemistry Tokyo Institute of Technology O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku Tokyo 152-8550 Japan
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26
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Zhao B, Wu Y, Yuan Y, Shi Z. Copper-catalysed Csp3–Csp cross-couplings between cyclobutanone oxime esters and terminal alkynes induced by visible light. Chem Commun (Camb) 2020; 56:4676-4679. [DOI: 10.1039/d0cc00988a] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel transformation for the construction of Csp3–Csp bonds was achieved via a photo-induced copper-catalysed C–C bond cleavage.
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Affiliation(s)
- Binlin Zhao
- Department of Chemistry and Materials Science
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Yixiao Wu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Yu Yuan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
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27
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He L, He X, Wang J, Qu Y, Su X, Zheng J, Zhao X. The positional isomerism in bimetal nanoclusters. CrystEngComm 2020. [DOI: 10.1039/d0ce01334j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Enriching the variety of isomerism in the nanocluster field is exciting but challenging.
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Affiliation(s)
- Lizhong He
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
| | - Xinhai He
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
| | - Junbo Wang
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
| | - Yinhu Qu
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
| | - Xiaolei Su
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
| | - Jiaojiao Zheng
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
| | - Xiaoliang Zhao
- School of Materials Science and Engineering
- Xi'an Polytechnic University
- Xi'an
- PR China
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28
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Miki K, Ohe K. π‐Conjugated Macrocycles Bearing Angle‐Strained Alkynes. Chemistry 2019; 26:2529-2575. [DOI: 10.1002/chem.201904114] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/24/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Koji Miki
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku Kyoto 615–8510 Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku Kyoto 615–8510 Japan
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29
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Moaven S, Andrews MC, Polaske TJ, Karl BM, Unruh DK, Bosch E, Bowling NP, Cozzolino AF. Triple-Pnictogen Bonding as a Tool for Supramolecular Assembly. Inorg Chem 2019; 58:16227-16235. [PMID: 31718176 DOI: 10.1021/acs.inorgchem.9b02761] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Supramolecular assembly utilizing simultaneous formation of three pnictogen bonds around a single antimony vertex was explored via X-ray crystallography, solution NMR, and computational chemistry. An arylethynyl (AE) ligand was designed to complement the three electrophilic regions around the Sb compound. Though solution studies reveal large binding constants for individual pyridyl units with the Sb donor, the rigidity and prearrangement of the AE acceptor proved necessary to achieve simultaneous binding of three acceptors to the Sb-centered pnictogen-bond donor. Calculations and X-ray structures suggest that negative cooperativity upon sequential binding of three acceptors to a Sb center limits the utility of triple-pnictogen bonding pyridyl acceptors. These limitations can be negated, however, when positive cooperativity is designed into a complementary acceptor ligand.
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Affiliation(s)
- Shiva Moaven
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Miranda C Andrews
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Thomas J Polaske
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Brian M Karl
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Daniel K Unruh
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Eric Bosch
- Chemistry Department , Missouri State University , 901 S. National Ave. , Springfield , Missouri 65897 , United States
| | - Nathan P Bowling
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Anthony F Cozzolino
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
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30
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Kinney ZJ, Kirinda VC, Hartley CS. Macrocycles of higher ortho-phenylenes: assembly and folding. Chem Sci 2019; 10:9057-9068. [PMID: 31762983 PMCID: PMC6857672 DOI: 10.1039/c9sc02975c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 08/09/2019] [Indexed: 01/24/2023] Open
Abstract
The sizes and geometries of macrocycles assembled from ortho-phenylenes are predicted by the stabilities and bite angles of possible conformers.
Higher-order structure in abiotic foldamer systems represents an important but largely unrealized goal. As one approach to this challenge, covalent assembly can be used to assemble macrocycles with foldamer subunits in well-defined spatial relationships. Such systems have previously been shown to exhibit self-sorting, new folding motifs, and dynamic stereoisomerism, yet there remain important questions about the interplay between folding and macrocyclization and the effect of structural confinement on folding behavior. Here, we explore the dynamic covalent assembly of extended ortho-phenylenes (hexamer and decamer) with rod-shaped linkers. Characteristic 1H chemical shift differences between cyclic and acyclic systems can be compared with computational conformer libraries to determine the folding states of the macrocycles. We show that the bite angle provides a measure of the fit of an o-phenylene conformer within a shape-persistent macrocycle, affecting both assembly and ultimate folding behavior. For the o-phenylene hexamer, the bite angle and conformer stability work synergistically to direct assembly toward triangular [3 + 3] macrocycles of well-folded oligomers. For the decamer, the energetic accessibility of conformers with small bite angles allows [2 + 2] macrocycles to be formed as the predominant species. In these systems, the o-phenylenes are forced into unusual folding states, preferentially adopting a backbone geometry with distinct helical blocks of opposite handedness. The results show that simple geometric restrictions can be used to direct foldamers toward increasingly complex folds.
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Affiliation(s)
- Zacharias J Kinney
- Department of Chemistry & Biochemistry , Miami University , Oxford , OH 45056 , USA .
| | - Viraj C Kirinda
- Department of Chemistry & Biochemistry , Miami University , Oxford , OH 45056 , USA .
| | - C Scott Hartley
- Department of Chemistry & Biochemistry , Miami University , Oxford , OH 45056 , USA .
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31
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Toyota S, Kawahata K, Sugahara K, Oki T, Iwanaga T. Quadruple and Sextuple Triptycene Gears in Macrocyclic Frameworks. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900421] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shinji Toyota
- Department of Chemistry, School of ScienceTokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Kenta Kawahata
- Department of Chemistry, Faculty of ScienceOkayama University of Science 1-1 Ridaicho, Kita-ku Okayama 700-0005 Japan
| | - Kota Sugahara
- Department of Chemistry, Faculty of ScienceOkayama University of Science 1-1 Ridaicho, Kita-ku Okayama 700-0005 Japan
| | - Tomohiro Oki
- Department of Chemistry, Faculty of ScienceOkayama University of Science 1-1 Ridaicho, Kita-ku Okayama 700-0005 Japan
| | - Tetsuo Iwanaga
- Department of Chemistry, Faculty of ScienceOkayama University of Science 1-1 Ridaicho, Kita-ku Okayama 700-0005 Japan
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32
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Kammerer C, Erbland G, Gisbert Y, Nishino T, Yasuhara K, Rapenne G. Biomimetic and Technomimetic Single Molecular Machines. CHEM LETT 2019. [DOI: 10.1246/cl.181019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, Toulouse, France
| | - Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, Toulouse, France
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
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33
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De los Santos ZA, Yusin G, Wolf C. Enantioselective sensing of carboxylic acids with a bis(urea)oligo(phenylene)ethynylene foldamer. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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34
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Fujise K, Saibara T, Iwanaga T, Tsurumaki E, Toyota S. Box-shaped Cyclic Oligoarenes: Synthesis and Structure of Anthracene-1,8-diyl Cyclic Tetramers. CHEM LETT 2019. [DOI: 10.1246/cl.180885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kei Fujise
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Toyoaki Saibara
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Tetsuo Iwanaga
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Eiji Tsurumaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
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35
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Locke GM, Bernhard SSR, Senge MO. Nonconjugated Hydrocarbons as Rigid-Linear Motifs: Isosteres for Material Sciences and Bioorganic and Medicinal Chemistry. Chemistry 2019; 25:4590-4647. [PMID: 30387906 DOI: 10.1002/chem.201804225] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 10/20/2018] [Indexed: 01/02/2023]
Abstract
Nonconjugated hydrocarbons, like bicyclo[1.1.1]pentane, bicyclo[2.2.2]octane, triptycene, and cubane are a unique class of rigid linkers. Due to their similarity in size and shape they are useful mimics of classic benzene moieties in drugs, so-called bioisosteres. Moreover, they also fulfill an important role in material sciences as linear linkers, in order to arrange various functionalities in a defined spatial manner. In this Review article, recent developments and usages of these special, rectilinear systems are discussed. Furthermore, we focus on covalently linked, nonconjugated linear arrangements and discuss the physical and chemical properties and differences of individual linkers, as well as their application in material and medicinal sciences.
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Affiliation(s)
- Gemma M Locke
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Stefan S R Bernhard
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Mathias O Senge
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
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36
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Kitamura K, Asahina K, Adachi K, Hamura T. Intramolecular benzoallene–alkyne cycloaddition initiated by site-selective SN2′ reaction of epoxytetracene en route to π-extended pyracylene. Chem Commun (Camb) 2019; 55:11021-11024. [DOI: 10.1039/c9cc05500b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic route to π-extended pyracylene was developed by hydrogen halide promoted cascade reaction of epoxytetracene.
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Affiliation(s)
- Kei Kitamura
- Department of Applied Chemistry for Environment
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - Kenta Asahina
- Department of Applied Chemistry for Environment
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - Kazuhiko Adachi
- Department of Applied Chemistry for Environment
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - Toshiyuki Hamura
- Department of Applied Chemistry for Environment
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
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37
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Micheel M, Ahner J, Frey M, Neumann C, Hager MD, Dietzek B. Photophysics of a Bis-Furan-Functionalized 4,7-bis
(Phenylethynyl)-2,1,3-benzothiadiazole: A Building Block for Dynamic Polymers. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mathias Micheel
- Institute of Physical Chemistry; Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
- Leibniz Institute of Photonic Technology (IPHT) e.V.; Albert-Einstein-Straße 9 07745 Jena Germany
| | - Johannes Ahner
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
| | - Martha Frey
- Institute of Physical Chemistry; Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
| | - Clara Neumann
- Institute of Physical Chemistry; Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
| | - Martin D. Hager
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry; Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
- Leibniz Institute of Photonic Technology (IPHT) e.V.; Albert-Einstein-Straße 9 07745 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
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38
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Kitamura K, Asahina K, Nagai Y, Sugiyama H, Uekusa H, Hamura T. Tetrakis(phenylethynyl)tetracene: A New π-Extended Rubrene Derivative. Chemistry 2018; 24:14034-14038. [PMID: 30070763 DOI: 10.1002/chem.201803294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/01/2018] [Indexed: 11/09/2022]
Abstract
An efficient synthetic route to 5,6,11,12-tetrakis(arylethynyl)tetracenes, new π-extended rubrene derivatives, was developed by means of [2+4] cycloaddition of dialkynylnaphthalyne and dialkynylisobenzofuran. Importantly, two alkynyl groups introduced into the aryne exerts a significant effect in lowering the LUMO energy, allowing practical access to sterically overcrowded polycyclic structures through an efficient HOMO-LUMO interaction. Study on the potential reactivity inherent in the peri-ethynyl-substituted tetracenes revealed several interesting reactivities. X-ray analysis of these new π-extended derivatives showed distorted structures to reduce steric repulsion due to the existence of the substituents at the peri-positions.
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Affiliation(s)
- Kei Kitamura
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Kenta Asahina
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Yusaku Nagai
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Haruki Sugiyama
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama 2, Meguro-ku, Tokyo, 152-8551, Japan
| | - Hidehiro Uekusa
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama 2, Meguro-ku, Tokyo, 152-8551, Japan
| | - Toshiyuki Hamura
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
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39
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Kozhemyakin Y, Krämer M, Rominger F, Dreuw A, Bunz UHF. A Tethered Tolane: Twisting the Excited State. Chemistry 2018; 24:15219-15222. [PMID: 30105868 DOI: 10.1002/chem.201804095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/13/2018] [Indexed: 11/05/2022]
Abstract
The synthesis of a doubly bridged tolane is reported. The target is obtained in a five-step synthesis, starting from commercially available 2-amino-meta-xylene by a combination of a Sandmeyer reaction, radical bromination, and Stille-type coupling, followed by double ring closing. The doubly tethered tolane is crystalline; the two phenyl rings are highly twisted with respect to each other both in solution and in the solid state. Optical spectroscopy and quantum chemical calculations show that the doubly bridged tolane is twisted not only in the ground state, but also in the excited state, leading to emission from the twisted state in solution and in the solid state. Strong phosphorescence is observed at cryogenic temperatures.
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Affiliation(s)
- Yury Kozhemyakin
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Maximilian Krämer
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 205, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Andreas Dreuw
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 205, 69120, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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40
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Nagaoka M, Tsurumaki E, Nishiuchi M, Iwanaga T, Toyota S. Synthesis and Electronic Properties of Length-Defined 9,10-Anthrylene-Butadiynylene Oligomers. J Org Chem 2018; 83:5784-5790. [PMID: 29667411 DOI: 10.1021/acs.joc.8b00311] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Linear π-conjugated oligomers consisting of anthracene and diacetylene units were readily synthesized by a one-pot process that involved desilylation and oxidative coupling from appropriate building units. We were able to isolate length-defined oligomers ranging from 2-mer to 6-mer as stable and soluble solids. The bathochromic shifts in the UV-vis spectra suggested that the π-conjugation was extended with elongation of the linear chain. Cyclic voltammetric measurements showed characteristic reversible oxidation waves that were dependent on the number of anthracene units.
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Affiliation(s)
- Maiko Nagaoka
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - Eiji Tsurumaki
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - Mai Nishiuchi
- Department of Chemistry, Faculty of Science , Okayama University of Science , 1-1 Ridaicho , Kita-ku, Okayama 700-0005 , Japan
| | - Tetsuo Iwanaga
- Department of Chemistry, Faculty of Science , Okayama University of Science , 1-1 Ridaicho , Kita-ku, Okayama 700-0005 , Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
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41
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Kehoe ZR, Woller GR, Speetzen ED, Lawrence JB, Bosch E, Bowling NP. Effects of Halogen and Hydrogen Bonding on the Electronics of a Conjugated Rotor. J Org Chem 2018; 83:6142-6150. [DOI: 10.1021/acs.joc.8b01064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zachary R. Kehoe
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Garrett R. Woller
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Erin D. Speetzen
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - James B. Lawrence
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Eric Bosch
- Department of Chemistry, Missouri State University, 901 South National Avenue, Springfield, Missouri 65897, United States
| | - Nathan P. Bowling
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
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42
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Konishi A, Morinaga A, Fukuhara G, Nishijima M, Mori T, Kida T, Yasuda M. 1,8-Diphenyl-9,10-Bis(arylethynyl)phenanthrenes: Synthesis, Distorted Structure, and Optical Properties. Chemistry 2018; 24:6625-6631. [PMID: 29473692 DOI: 10.1002/chem.201800150] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Indexed: 01/05/2023]
Abstract
The synthesis and optical properties of 1,8-diphenyl-9,10-bis(arylethynyl)phenanthrenes, which are distorted phenanthrenes, are reported. The presence of the two phenyl groups at the 1,8-positions of phenanthrene significantly distorts the molecular geometries, as was evidenced by X-ray crystallography. The congested substitution pattern in the K region results in a distorted aromatic framework, which leads to a redshift in the emission spectrum. These observations are in stark contrast to 9,10-bis(phenylethynyl)phenanthrene with no phenyl groups at the 1,8-positions. A large Stokes shift suggested extensive structural relaxation between the phenyl and arylethynyl units in the excited state, which was supported by theoretical calculations.
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Affiliation(s)
- Akihito Konishi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Atsushi Morinaga
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Gaku Fukuhara
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Masaki Nishijima
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Toshiyuki Kida
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Makoto Yasuda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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43
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Synthesis and properties of fully conjugated macrocycles composed of m -diethynylene-phenylene-bridged two dibenzofuran, dibenzothiophene and carbazole units. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Abstract
This review article presents our accomplished work on the synthesis of molecular triptycene wheels and their introduction into nanovehicles such as wheelbarrows and nanocars, equipped with two and four wheels, respectively. The architecture of nanovehicles is based on polycyclic aromatic hydrocarbons, which provide a potential cargo zone. Our strategy allowed us to obtain planar or curved nanocars, exhibiting different mobilities on metallic surfaces. Our curved nanocar participated in the first nanocar race organized in Toulouse (France) on 28 and 29 April 2017.
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45
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Bagheri B, Baumeier B, Karttunen M. Getting excited: challenges in quantum-classical studies of excitons in polymeric systems. Phys Chem Chem Phys 2018; 18:30297-30304. [PMID: 27453482 DOI: 10.1039/c6cp02944b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combination of classical molecular dynamics (MM/MD) and quantum chemical calculations based on the density functional theory (DFT) was performed to describe the conformational properties of diphenylethyne (DPE), methylated-DPE and poly para phenylene ethynylene (PPE). DFT calculations were employed to improve and develop force field parameters for MM/MD simulations. Many-body Green's function theory within the GW approximation and the Bethe-Salpeter (GW-BSE) equation were utilized to describe the excited states of the systems. The reliability of the excitation energies based on the MM/MD conformations was examined and compared to the excitation energies from DFT conformations. The results show an overall agreement between the optical excitations based on MM/MD conformations and DFT conformations. This allows for the calculation of excitation energies based on MM/MD conformations.
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Affiliation(s)
- Behnaz Bagheri
- Department of Mathematics and Computer Science & Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Björn Baumeier
- Department of Mathematics and Computer Science & Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Mikko Karttunen
- Department of Mathematics and Computer Science & Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
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46
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Melnikov AR, Davydova MP, Sherin PS, Korolev VV, Stepanov AA, Kalneus EV, Benassi E, Vasilevsky SF, Stass DV. X-ray Generated Recombination Exciplexes of Substituted Diphenylacetylenes with Tertiary Amines: A Versatile Experimental Vehicle for Targeted Creation of Deep-Blue Electroluminescent Systems. J Phys Chem A 2018; 122:1235-1252. [PMID: 29283574 DOI: 10.1021/acs.jpca.7b11634] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Customizable and technology-friendly functional materials are one of the mainstays of emerging organic electronics and optoelectronics. We show that recombination exciplexes of simple substituted diphenylacetylenes with tertiary amines can be a convenient source of tunable deep-blue emission with possible applications in organic electroluminescent systems. The optically inaccessible exciplexes were produced via recombination of radiation-generated radical ion pairs in alkane solution, which mimics charge transport and recombination in the active layer of practical organic light-emitting diodes in a simple solution-based experiment. Despite varying and rather poor intrinsic emission properties, diphenylacetylene and its prototypical methoxy (donor) or trifluoromethyl (acceptor) monosubstituted derivatives readily form recombination exciplexes with N,N-dimethylaniline and other tertiary amines that produce emission with maxima ranging from 385 to 435 nm. The position of emission band maximum linearly correlates with readily calculated gas-phase electron affinity of the corresponding diphenylacetylene, which can be used for fast computational prescreening of the candidate molecules, and various substituted diphenylacetylenes can be synthesized via relatively simple and universal cross-coupling reactions of Sonogashira and Castro. Together, the simple solution-based experiment, computationally cheap prescreening method, and universal synthetic strategy may open a very broad and chemically convenient class of compounds to obtain OLEDs and OLED-based multifunctional devices with tunable emission spectrum and high conversion efficiency that has yet not been seriously considered for these purposes.
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Affiliation(s)
- Anatoly R Melnikov
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation.,Novosibirsk State University , 2, Pirogova Str., 630090 Novosibirsk, Russian Federation
| | - Maria P Davydova
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Peter S Sherin
- Novosibirsk State University , 2, Pirogova Str., 630090 Novosibirsk, Russian Federation.,International Tomography Center , 3a, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Valeri V Korolev
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Alexander A Stepanov
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Evgeny V Kalneus
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Enrico Benassi
- School of Science and Technology, Nazarbayev University , 53, Qabanbay Batyr Ave., 010000 Astana, Kazakhstan.,University of Oklahoma , 660 Parrington Oval, Norman, Oklahoma 73019, United States
| | - Sergei F Vasilevsky
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Dmitri V Stass
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation.,Novosibirsk State University , 2, Pirogova Str., 630090 Novosibirsk, Russian Federation
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47
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Landge VG, Parveen A, Nandakumar A, Balaraman E. Pd(ii)-Catalyzed gamma-C(sp3)–H alkynylation of amides: selective functionalization of R chains of amides R1C(O)NHR. Chem Commun (Camb) 2018; 54:7483-7486. [DOI: 10.1039/c8cc03445a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of palladium(ii)-catalyzed alkynylation of an unactivated gamma C(sp3)–H bond of alkyl amides (cyclic, linear, and amino acids) is reported.
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Affiliation(s)
- Vinod G. Landge
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
| | - Ayisha Parveen
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
| | | | - Ekambaram Balaraman
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
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48
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Bhattacharjee I, Ghosh N, Raina A, Dasgupta J, Ray D. Conformational switching via an intramolecular H-bond modulates the fluorescence lifetime in a novel coumarin–imidazole conjugate. Phys Chem Chem Phys 2018; 20:6060-6072. [DOI: 10.1039/c7cp07274k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Achieving synthetic control over light-driven molecular dynamics is essential for designing complex molecule-based devices.
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Affiliation(s)
| | - Nita Ghosh
- Department of Chemical Sciences
- Tata Institute of Fundamental Research
- India
| | - Abhinav Raina
- Department of Chemistry
- School of Natural Sciences
- India
| | | | - Debdas Ray
- Department of Chemistry
- School of Natural Sciences
- India
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49
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Hu S, Lu L, Zhu T, Wu Q, Chen Y, Li JJ, Zhao J. Rh(iii)-Catalyzedortho-C–H alkynylation ofN-phenoxyacetamides with hypervalent iodine-alkyne reagents at room temperature. Org Biomol Chem 2018; 16:43-47. [DOI: 10.1039/c7ob02438j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Directing group ONHR preservedortho-alkynylation under mild conditions catalyzed by rhodium is reported.
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Affiliation(s)
- Sisheng Hu
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Chemistry and Chemical Engineering
- Institute of Chemistry and BioMedical Sciences
- Nanjing University
- Nanjing
| | - Liang Lu
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Chemistry and Chemical Engineering
- Institute of Chemistry and BioMedical Sciences
- Nanjing University
- Nanjing
| | - Tongyang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Chemistry and Chemical Engineering
- Institute of Chemistry and BioMedical Sciences
- Nanjing University
- Nanjing
| | - Qian Wu
- Guangdong Key Lab of Nano-Micro Material Research
- School of Chemical Biology and Biotechnology
- Shenzhen Graduate School of Peking University
- Shenzhen
- China
| | - Ying Chen
- Guangdong Key Lab of Nano-Micro Material Research
- School of Chemical Biology and Biotechnology
- Shenzhen Graduate School of Peking University
- Shenzhen
- China
| | - Jie Jack Li
- Department of Chemistry
- University of San Francisco
- San Francisco
- USA
| | - Jing Zhao
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Chemistry and Chemical Engineering
- Institute of Chemistry and BioMedical Sciences
- Nanjing University
- Nanjing
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50
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Mwanza D, Louzada M, Britton J, Sekhosana E, Khene S, Nyokong T, Mashazi P. The effect of the cobalt and manganese central metal ions on the nonlinear optical properties of tetra(4-propargyloxyphenoxy)phthalocyanines. NEW J CHEM 2018. [DOI: 10.1039/c8nj00748a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phthalocyanines were investigated as optical limiters. The paramagnetic complexes were not effective owing to quenching of the excited states.
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Affiliation(s)
- D. Mwanza
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
| | - M. Louzada
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
| | - J. Britton
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
- RU/DST Centre for Nanotechnology Innovation
| | - E. Sekhosana
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
- RU/DST Centre for Nanotechnology Innovation
| | - S. Khene
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
| | - T. Nyokong
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
- RU/DST Centre for Nanotechnology Innovation
| | - P. Mashazi
- Department of Chemistry
- Rhodes University
- Grahamstown
- South Africa
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