1
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Maurya JP, Ramasastry SSV. Interrupted Corey-Chaykovsky Reaction of Tethered Bis-Enones to Access 2,3-Epoxy-hexahydrofluoren-9-ones. Org Lett 2024; 26:4571-4575. [PMID: 38759229 DOI: 10.1021/acs.orglett.4c01550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024]
Abstract
The Corey-Chaykovsky reaction is usually employed to synthesize cyclopropanes from activated olefins. We intercepted the intermediates prevailing during this transformation and diverted the process for the creation of intricate molecular motifs. We describe an unusual skeletal remodelling of tethered bis-enones to 2,3-epoxy-hexahydrofluoren-9-ones via an "interrupted Corey-Chaykovsky reaction". The strategy rationally merges the nucleophilic features of sulfur ylides with electronically biased olefins to achieve the regio- and stereoselective synthesis of several new classes of hydrofluorenones. We have demonstrated the synthetic utility of the products in accessing several highly functionalized molecules.
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Affiliation(s)
- Jay Prakash Maurya
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81 S A S Nagar, Manauli PO, Punjab 140 306, India
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81 S A S Nagar, Manauli PO, Punjab 140 306, India
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2
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Ding B, Xue Q, Wei H, Chen J, Liu ZS, Cheng HG, Cong H, Tang J, Zhou Q. Enantioconvergent synthesis of chiral fluorenols from racemic secondary alcohols via Pd(ii)/chiral norbornene cooperative catalysis. Chem Sci 2024; 15:7975-7981. [PMID: 38817591 PMCID: PMC11134410 DOI: 10.1039/d4sc01004c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/18/2024] [Indexed: 06/01/2024] Open
Abstract
An efficient protocol for the asymmetric synthesis of fluorenols has been developed through an enantioconvergent process enabled by Pd(ii)/chiral norbornene cooperative catalysis. This approach allows facile access to diverse functionalized chiral fluorenols with constantly excellent enantioselectivities, applying readily available racemic secondary ortho-bromobenzyl alcohols and aryl iodides as the starting materials.
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Affiliation(s)
- Bo Ding
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Qilin Xue
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Han Wei
- The Institute for Advanced Studies, Wuhan University Wuhan 430072 China
| | - Jiangwei Chen
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Ze-Shui Liu
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Hong-Gang Cheng
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Hengjiang Cong
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Jianting Tang
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, School of Environmental and Chemical Engineering, Chongqing Three Gorges University Chongqing 404100 China
| | - Qianghui Zhou
- Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), Hubei Key Lab on Organic and Polymeric OptoElectronic Materials, College of Chemistry and Molecular Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
- The Institute for Advanced Studies, Wuhan University Wuhan 430072 China
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3
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Liu JC, Peng H, Chen XG, Lv HP, Song XJ, Xiong RG, Liao WQ. Fluorination Enables Dual Ferroelectricity in Both Solid- and Liquid-Crystal Phases. JACS AU 2023; 3:1196-1204. [PMID: 37124294 PMCID: PMC10131199 DOI: 10.1021/jacsau.3c00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 05/03/2023]
Abstract
Ferroelectric materials are a special type of polar substances, including solids or liquid crystals. However, obtaining a material to be ferroelectric in both its solid crystal (SC) and liquid crystal (LC) phases is a great challenge. Moreover, although cholesteric LCs inherently possess the advantage of high fluidity, their ferroelectricity remains unknown. Here, through the reasonable H/F substitution on the fourth position of the phenyl group of the parent nonferroelectric dihydrocholesteryl benzoate, we designed ferroelectric dihydrocholesteryl 4-fluorobenzoate (4-F-BDC), which shows ferroelectricity in both SC and cholesteric LC phases. The fluorination induces a lower symmetric polar P1 space group and a new solid-to-solid phase transition in 4-F-BDC. Beneficial from fluorination, the SC and cholesteric LC phases of 4-F-BDC show clear ferroelectricity, as confirmed by well-shaped polarization-voltage hysteresis loops. The dual ferroelectricity in both SC and cholesteric LC phases of a single material was rarely found. This work offers a viable case for the exploration of the interplay between ferroelectric SC and LC phases and provides an efficient approach for designing ferroelectrics with dual ferroelectricity and cholesteric ferroelectric liquid crystals.
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4
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Vaňkátová P, Kubíčková A, Kalíková K. Enantioseparation of liquid crystals and their utilization as enantiodiscrimination materials. J Chromatogr A 2022; 1673:463074. [DOI: 10.1016/j.chroma.2022.463074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/12/2022] [Accepted: 04/15/2022] [Indexed: 11/28/2022]
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5
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Lai PS, Jansen-van Vuuren RD, Lemieux RP, Snieckus V. Directed ortho and Remote Metalation-Suzuki-Miyaura Cross Coupling Route to Azafluorenol Core Liquid Crystals. J Org Chem 2021; 86:17543-17549. [PMID: 34851650 DOI: 10.1021/acs.joc.1c01027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new smectic C* mesogens containing a hexyloxy side chain and an azafluorenone (3a) or azafluorenol (3b) core were synthesized using a combined directed ortho metalation-directed remote metalation-Suzuki-Miyaura cross-coupling strategy. 3b was formed in 10 steps and 25% overall yield based on starting benzamide 1a. 3a forms a nematic phase, while 3b forms a smectic A phase. The large temperature range of the smectic phase for the azafluorenol 3b is indicative of mesophase stabilization by intermolecular hydrogen bonding between the hydroxyl group and pyridine nitrogen of neighboring 3b molecules.
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Affiliation(s)
- Ping-Shan Lai
- Queen's University, Chernoff Hall, 9 Bader Lane, Kingston, Ontario K7K 2N1, Canada
| | | | - Robert P Lemieux
- Department of Chemistry, University of Waterloo, 200 University Avenue W., Waterloo, Ontario N2L 3G1, Canada
| | - Victor Snieckus
- Queen's University, Chernoff Hall, 9 Bader Lane, Kingston, Ontario K7K 2N1, Canada
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6
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Li B, Shen N, Yang Y, Zhang X, Fan X. Tunable Synthesis of Indeno[1,2- c]furans and 3-Benzoylindenones via FeCl 3-Catalyzed Carbene/Alkyne Metathesis Reaction of o-Alkynylbenzoyl Diazoacetates. Org Lett 2021; 23:388-393. [PMID: 33373254 DOI: 10.1021/acs.orglett.0c03882] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient synthesis of indeno[1,2-c]furan and 3-benzoylindenone derivatives through a FeCl3-catalyzed carbene/alkyne metathesis reaction of o-alkynylbenzoyl diazoacetates is presented. Mechanistically, the key intermediate, vinyl iron carbene, is formed by 5-exo-dig carbocyclization and terminated with a formal [3 + 2] cycloaddition or carbonylation. To the best of our knowledge, this is the first example in which FeCl3 is used as a catalyst for a carbene/alkyne metathesis reaction. Finally, derivatization reactions were carried out to showcase the value of the products.
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Affiliation(s)
- Bin Li
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for GreenManufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Nana Shen
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for GreenManufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yujie Yang
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for GreenManufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for GreenManufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for GreenManufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
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7
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Bader K, Müller C, Molard Y, Baro A, Ehni P, Knelles J, Laschat S. Fluorenone imidazolium salts as novel de Vries materials. RSC Adv 2020; 10:23999-24016. [PMID: 35517358 PMCID: PMC9055108 DOI: 10.1039/d0ra04650g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/15/2020] [Indexed: 01/09/2023] Open
Abstract
In ionic liquid crystals (ILCs) tilted mesophases such as SmC required for electro-optic devices are quite rare. We report a design concept that induced the SmC phase and enabled de Vries-like behaviour in ILCs. For this purpose, we synthesized and characterized a library of ILC derivatives ImR(On,Ym)X which consist of a rigid central fluorenone core containing an alkoxy or thioether side chain and connected via a flexible spacer to an imidazolium head group. The mesomorphic properties were studied by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and X-ray diffraction (XRD). Temperature-dependent measurements of smectic layer spacing d by small-angle X-ray scattering (SAXS) and of optical tilt angles by POM demonstrate that ILCs ImR(On,Ym)X undergo SmA–SmC phase transitions with maximum layer contraction values between 0.4% and 2.1%. The lowest reduction factor R of 0.2 at the reduced temperature T − TAC = −10 K was calculated for Im(O12,S14)Br. Electron density calculations indicated a bilayer structure. Furthermore, temperature dependent emission studies show that self-assembling has a strong influence on the emission intensity of these ILCs. ILCs consisting of cationic head group–spacer–fluorenone central core–side chain show de Vries-like behaviour.![]()
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Affiliation(s)
- Korinna Bader
- Institut für Organische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Carsten Müller
- Institut für Physikalische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Yann Molard
- CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, University Rennes 35000 Rennes France
| | - Angelika Baro
- Institut für Organische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Philipp Ehni
- Institut für Organische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Jakob Knelles
- Institut für Organische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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8
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Abstract
Only six years ago, the first clear-cut example of a ferroelectric, lyotropic liquid crystal was discovered. Since then, ongoing investigations in this new research field provided numerous instances of the missing pieces to complete the formerly blank picture of the lyotropic smectic C* (SmC*) phase. In this review we wanted to combine these new results and put them into a wider historical and scientific context. We start by giving an introduction about characteristic features of the well-known thermotropic SmC* phase and why it is so difficult to find a lyotropic equivalent of this fascinating phase. After discussing early examples of achiral lyotropic and swollen SmC phases, we recap the discovery of the first lyotropic SmC* phase. The molecular features necessary for its formation and its properties are analyzed. We place special emphasis on discussing the long-range orientational order of the tilt direction and the corresponding chirality effects. By comparing these exceptional features with thermotropic and swollen SmC* phases, we aim to improve not only the understanding of the lyotropic SmC* phase, but also of the relationship between thermotropic and lyotropic systems in general.
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9
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10
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Ruzi R, Zhang M, Ablajan K, Zhu C. Photoredox-Catalyzed Deoxygenative Intramolecular Acylation of Biarylcarboxylic Acids: Access to Fluorenones. J Org Chem 2017; 82:12834-12839. [DOI: 10.1021/acs.joc.7b02197] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rehanguli Ruzi
- Key
Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and
Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical
Engineering, Xinjiang University, Urumqi 830046, P. R. China
- State
Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of
Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Muliang Zhang
- State
Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of
Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Keyume Ablajan
- Key
Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and
Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical
Engineering, Xinjiang University, Urumqi 830046, P. R. China
| | - Chengjian Zhu
- State
Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of
Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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11
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Pang Y, Yan J, An B, Huang L, Li X. The synthesis and evaluation of new butadiene derivatives as tubulin polymerization inhibitors. Bioorg Med Chem 2017; 25:3059-3067. [DOI: 10.1016/j.bmc.2017.03.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/24/2017] [Accepted: 03/26/2017] [Indexed: 10/19/2022]
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12
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Satpathi B, Wagulde SV, Ramasastry SSV. An enantioselective organocatalytic intramolecular Morita–Baylis–Hillman (IMBH) reaction of dienones, and elaboration of the IMBH adducts to fluorenones. Chem Commun (Camb) 2017; 53:8042-8045. [DOI: 10.1039/c7cc02524f] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient synthesis of cyclopenta-fused arenes and heteroarenes has been achieved via an enantioselective organocatalytic intramolecular Morita–Baylis–Hillman (IMBH) reaction of dienones. The IMBH-adducts were transformed to fluorenones in a serendipitous manner.
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Affiliation(s)
- Bishnupada Satpathi
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manauli PO
- India
| | - Siddhant V. Wagulde
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manauli PO
- India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manauli PO
- India
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13
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Ye F, Haddad M, Michelet V, Ratovelomanana-Vidal V. Access toward Fluorenone Derivatives through Solvent-Free Ruthenium Trichloride Mediated [2 + 2 + 2] Cycloadditions. Org Lett 2016; 18:5612-5615. [DOI: 10.1021/acs.orglett.6b02840] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Fei Ye
- PSL Research University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie
Paris, Paris 75005, France
| | - Mansour Haddad
- PSL Research University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie
Paris, Paris 75005, France
| | - Véronique Michelet
- PSL Research University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie
Paris, Paris 75005, France
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14
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Furusawa T, Morimoto T, Nishiyama Y, Tanimoto H, Kakiuchi K. Rh(I) -Catalyzed Intramolecular Carbonylative C-H/C-I Coupling of 2-Iodobiphenyls Using Furfural as a Carbonyl Source. Chem Asian J 2016; 11:2312-5. [PMID: 27378516 DOI: 10.1002/asia.201600802] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Indexed: 12/13/2022]
Abstract
Synthesis of fluoren-9-ones by a Rh-catalyzed intramolecular C-H/C-I carbonylative coupling of 2-iodobiphenyls using furfural as a carbonyl source is presented. The findings indicate that the rate-determining step is not a C-H bond cleavage but, rather, the oxidative addition of the C-I bond to a Rh(I) center.
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Affiliation(s)
- Takuma Furusawa
- Graduate School of materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Tsumoru Morimoto
- Graduate School of materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.
| | - Yasuhiro Nishiyama
- Graduate School of materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Hiroki Tanimoto
- Graduate School of materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Kiyomi Kakiuchi
- Graduate School of materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
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15
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Nareddy P, Jordan F, Brenner-Moyer SE, Szostak M. Ruthenium(II)-Catalyzed Regioselective C–H Arylation of Cyclic and N,N-Dialkyl Benzamides with Boronic Acids by Weak Coordination. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01360] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Pradeep Nareddy
- Department of Chemistry, Rutgers University, 73 Warren
Street, Newark, New Jersey 07102, United States
| | - Frank Jordan
- Department of Chemistry, Rutgers University, 73 Warren
Street, Newark, New Jersey 07102, United States
| | - Stacey E. Brenner-Moyer
- Department of Chemistry, Rutgers University, 73 Warren
Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren
Street, Newark, New Jersey 07102, United States
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16
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Furusawa T, Morimoto T, Oka N, Tanimoto H, Nishiyama Y, Kakiuchi K. Pd(0)-catalyzed CO Gas-free Carbonylation of 2-Bromobiphenyls with Formaldehyde as a Carbonyl Surrogate through the Cleavage of a C–H Bond. CHEM LETT 2016. [DOI: 10.1246/cl.151182] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Takuma Furusawa
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
| | - Tsumoru Morimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
| | - Nagato Oka
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
| | - Hiroki Tanimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
| | - Yasuhiro Nishiyama
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
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17
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Yalcouye B, Berthelot-Bréhier A, Augros D, Panossian A, Choppin S, Chessé M, Colobert F, Leroux FR. Access to Atropisomerically Enriched Biaryls by the Coupling of Aryllithiums with Arynes under Control by Homochiral Oxazolines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501503] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Song J, Wei F, Sun W, Li K, Tian Y, Liu C, Li Y, Xie L. Synthesis of Fluoren-9-ones and Ladder-Type Oligo-p-phenylene Cores via Pd-Catalyzed Carbonylative Multiple C-C Bond Formation. Org Lett 2015; 17:2106-9. [PMID: 25895161 DOI: 10.1021/acs.orglett.5b00680] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new route to various substituted fluoren-9-ones has been developed via an efficient Pd-catalyzed carbonylative multiple C-C bond formation. Under a CO atmosphere, using commercially available aryl halides and arylboronic acids as substrates, this three-component reaction proceeded smoothly in moderate to excellent yields with good functional-group compatibility. The mechanistic investigations suggested a sequential process for the reaction that forms o-bromobiaryls in the first stage followed by a cyclocarbonylation reaction. This chemistry has been successfully extended to construct ladder-type oligo-p-phenylene cores.
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Affiliation(s)
- Juan Song
- †Key Laboratory for Organic Electronics and Information Display and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People's Republic of China
| | - Fuliang Wei
- †Key Laboratory for Organic Electronics and Information Display and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People's Republic of China
| | - Wei Sun
- †Key Laboratory for Organic Electronics and Information Display and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People's Republic of China
| | - Ke Li
- ‡College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Yanan Tian
- ‡College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Chao Liu
- ‡College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Yali Li
- †Key Laboratory for Organic Electronics and Information Display and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People's Republic of China
| | - Linghai Xie
- †Key Laboratory for Organic Electronics and Information Display and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People's Republic of China
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19
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Phanumartwiwath A, Hornsby TW, Jamalis J, Bailey CD, Willis CL. Silyl Migrations in d-Xylose Derivatives: Total Synthesis of a Marine Quinoline Alkaloid. Org Lett 2013; 15:5734-7. [DOI: 10.1021/ol402760p] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Thomas W. Hornsby
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | | | | | - Christine L. Willis
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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20
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Haggam RA. Cu(I)-catalyzed intramolecular cyclizations of substituted 2-iodobenzophenones under thermal and microwave conditions. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Wang X, Fu JM, Snieckus V. Directed MetalationCross-Coupling Strategies. Total Syntheses of the Alleged and the Revised Phenanthrene Natural Product Gymnopusin. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200564] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Bunt AJ, Bailey CD, Cons BD, Edwards SJ, Elsworth JD, Pheko T, Willis CL. Bicyclic Oxygen Heterocycles from γ,δ-Unsaturated Alcohols: Synthetic Targets Inspired by Blepharocalyxin D. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108315] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bunt AJ, Bailey CD, Cons BD, Edwards SJ, Elsworth JD, Pheko T, Willis CL. Bicyclic Oxygen Heterocycles from γ,δ-Unsaturated Alcohols: Synthetic Targets Inspired by Blepharocalyxin D. Angew Chem Int Ed Engl 2012; 51:3901-4. [DOI: 10.1002/anie.201108315] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Indexed: 11/10/2022]
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Nishina Y, Miyata J, Kawai R, Gotoh K. Recyclable Pd–graphene catalyst: mechanistic insights into heterogeneous and homogeneous catalysis. RSC Adv 2012. [DOI: 10.1039/c2ra21185h] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ho RM, Chiang YW, Lin SC, Chen CK. Helical architectures from self-assembly of chiral polymers and block copolymers. Prog Polym Sci 2011. [DOI: 10.1016/j.progpolymsci.2010.09.001] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Crawford JJ, Fleming BJ, Kennedy AR, Klett J, O’Hara CT, Orr SA. Remote functionalisation via sodium alkylamidozincate intermediates: access to unusual fluorenone and pyridyl ketone reactivity patterns. Chem Commun (Camb) 2011; 47:3772-4. [DOI: 10.1039/c1cc10193e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Xie B, Yang J, Yang Q, Yuan W. Enantioselective reduction of fluorenones in surfactant-aqueous solution by fruits and vegetables. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rahimizadeh M, Pordel M, Bakavoli M, Rezaeian S, Eshghi H. Synthesis of a new heterocyclic system — Fluoreno[1,2-d]imidazol-10-one. CAN J CHEM 2009. [DOI: 10.1139/v09-062] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Synthesis of various substituted fluoreno[1,2-d]imidazol-10-ones (5a–5g) has been accomplished by the cyclization of diazotized 1-substituted 4-benzoyl-5- aminobenzimidazoles (4a–4g). Compounds 4a–4g were prepared by reductive ring opening of 3H-imidazo[4′,5′:3,4]benzo[c]isoxazoles (3a–3g) with zinc dust in EtOH/NaOH solution.
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Affiliation(s)
- Mohammad Rahimizadeh
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Mashhad 91775-1436, Iran
| | - Mehdi Pordel
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Mashhad 91775-1436, Iran
| | - Mehdi Bakavoli
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Mashhad 91775-1436, Iran
| | - Shima Rezaeian
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Mashhad 91775-1436, Iran
| | - Hossein Eshghi
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Mashhad 91775-1436, Iran
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Li X, Kikugawa N, Ye J. A Comparison Study of Rhodamine B Photodegradation over Nitrogen-Doped Lamellar Niobic Acid and Titanic Acid under Visible-Light Irradiation. Chemistry 2009; 15:3538-45. [DOI: 10.1002/chem.200801770] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tan BH, Yoshio M, Kato T. Induction of Columnar and Smectic Phases for Spiropyran Derivatives: Effects of Acidichromism and Photochromism. Chem Asian J 2008; 3:534-541. [DOI: 10.1002/asia.200700225] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Shimura H, Yoshio M, Hoshino K, Mukai T, Ohno H, Kato T. Noncovalent Approach to One-Dimensional Ion Conductors: Enhancement of Ionic Conductivities in Nanostructured Columnar Liquid Crystals. J Am Chem Soc 2008; 130:1759-65. [DOI: 10.1021/ja0775220] [Citation(s) in RCA: 169] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Harutoki Shimura
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, and Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Masafumi Yoshio
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, and Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Koji Hoshino
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, and Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Tomohiro Mukai
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, and Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Hiroyuki Ohno
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, and Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, and Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan
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Roberts JC, Hudson ZM, Lemieux RP. The influence of alkoxy chain length on the ferroelectric properties of chiral fluorenol liquid crystals. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b804673e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Rapid progress in the synthetic application of benzotriazole derivatives in the last 20 years has resulted in over 1000 scientific papers on the subject. This fact is reflected in Section 5.01.7, which involves almost a half of the volume of this chapter. The section is arranged according to hybridization of the C-α atom and atomic numbers of the atoms in positions β and γ to allow an easy access to the material of interest. Recent discovery of copper catalysis in [3+2] cycloadditions of azides to acetylenes, the so-called ‘click chemistry’, which boosted application of the 1,2,3-triazole derivatives, especially in medicinal chemistry, is presented in Section 5.01.9. From the point of view of practical applications, Section 5.01.11 is organized according to the number, position, and combination of the substituents at the aromatic rings. Another novel feature that has no precedence in the previous editions of Comprehensive Heterocyclic Chemistry is an addition of triazole and benzotriazole complexes with various transitions metals to Section 5.01.4.
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Li F, Cui J, Qian X, Ren W, Wang X. Baker's yeast-mediated enantioselective reduction of substituted fluorenones. Chem Commun (Camb) 2006:865-7. [PMID: 16479293 DOI: 10.1039/b516475c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the presence of DMSO as co-solvent and under vigorous agitation, baker's yeast in water was found to reduce substituted fluorenones to the corresponding fluorenols in good to excellent enantioselectivities.
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Affiliation(s)
- Feng Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
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Kato T, Mizoshita N, Kishimoto K. Funktionelle flüssigkristalline Aggregate: selbstorganisierte weiche Materialien. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200501384] [Citation(s) in RCA: 191] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kato T, Mizoshita N, Kishimoto K. Functional Liquid-Crystalline Assemblies: Self-Organized Soft Materials. Angew Chem Int Ed Engl 2006; 45:38-68. [PMID: 16353263 DOI: 10.1002/anie.200501384] [Citation(s) in RCA: 1001] [Impact Index Per Article: 55.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In the 21st century, soft materials will become more important as functional materials because of their dynamic nature. Although soft materials are not as highly durable as hard materials, such as metals, ceramics, and engineering plastics, they can respond well to stimuli and the environment. The introduction of order into soft materials induces new dynamic functions. Liquid crystals are ordered soft materials consisting of self-organized molecules and can potentially be used as new functional materials for electron, ion, or molecular transporting, sensory, catalytic, optical, and bio-active materials. For this functionalization, unconventional materials design is required. Herein, we describe new approaches to the functionalization of liquid crystals and show how the design of liquid crystals formed by supramolecular assembly and nano-segregation leads to the formation of a variety of new self-organized functional materials.
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Affiliation(s)
- Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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Kishimoto K, Suzawa T, Yokota T, Mukai T, Ohno H, Kato T. Nano-Segregated Polymeric Film Exhibiting High Ionic Conductivities. J Am Chem Soc 2005; 127:15618-23. [PMID: 16262428 DOI: 10.1021/ja0549594] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nanostructures can be used for the fabrication of highly functional materials transporting ions and charges. We demonstrate a new design strategy for polymeric higher ion-conductors. Phase-segregated layers of alternating mobile tetra(ethylene oxide)s (TEOs) and rigid aromatic cores where the TEO moieties are grafted from aromatic layers have been shown to be efficient to transport lithium triflate. Such segregated structures at the nanometer scale (nano-segregated structures) were prepared by in-situ photopolymerization of an aligned methacrylate liquid crystalline monomer comprising a terphenyl rigid rod mesogen having a TEO terminal chain. The ion-conductive TEO moiety remains in the highly mobile state even after polymerization, which is indicated by its low glass transition temperature (-45 degrees C). This nanostructured film exhibits an ionic conductivity parallel to the layer of 10(-3) S cm(-1) at room temperature. The highest ionic conductivity is in the level of 10(-2) S cm(-1) observed at 150 degrees C. The anisotropic ionic conductivities have been observed for the nano-segregated film.
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Affiliation(s)
- Kenji Kishimoto
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Lukyanenko NG, Kirichenko TI, Lyapunov AY, Mazepa AV, Simonov YA, Fonari MS, Botoshansky MM. Bis(oxofluorenediyl)oxacyclophanes: Synthesis, Crystal Structure and Complexation with Paraquat in the Gas Phase. Chemistry 2005; 11:262-70. [PMID: 15551308 DOI: 10.1002/chem.200400870] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The first three representatives of the new family of oxacyclophanes incorporating two 2,7-dioxyfluorenone fragments, connected by [-CH(2)CH(2)O-](m) spacers (m=2-4), have been synthesized. The yield of the smallest oxacyclophane (m=2) is considerably higher with respect to the larger ones (m=3 and m=4), which are formed in comparable yields. Molecular modeling and NMR spectra analysis of the model compounds suggest that an essential difference in oxacyclophanes yields is caused by formation of quasi-cyclic intermediates, which are preorganized for macrocyclization owing to intramolecular pi-pi stacking interactions between the fluorenone units. The solid-state structures of these oxacyclophanes exhibit intra- and intermolecular pi-pi stacking interactions that dictate their rectangular shape in the fluorenone backbone and crystal packing of the molecules with the parallel or T-shape arrangement. The crystal packing in all cases is also sustained by weak C--HO hydrogen bonds. FAB mass spectral analysis of mixtures of the larger oxacyclophanes (m=3 and m=4) and a paraquat moiety revealed peaks corresponding to the loss of one and two PF(6) (-) counterions from the 1:1 complexes formed. However, no signals were observed for complexes of the paraquat moiety with the smaller oxacyclophane (m=2). Computer molecular modeling of complexes revealed a pseudorotaxane-like incorporation of the paraquat unit, sandwiched within a macrocyclic cavity between the almost parallel-aligned fluorenone rings of the larger oxacyclophanes (m=3 and m=4). In contrast to this, only external complexes of the smallest oxacyclophane (m=2) with a paraquat unit have been found in the energy window of 10 kcal mol(-1).
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Affiliation(s)
- Nikolay G Lukyanenko
- Department of Fine Organic Synthesis, A. V. Bogatsky Physico-Chemical Institute, National Academy of Sciences of Ukraine, Lustdorfskaya doroga 86, 65080 Odessa, Ukraine.
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