1
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Chen D, Song ZJ, Yan S, Li G, Wang JY, Zhang Y. Photoinduced radical tandem annulation of 1,7-diynes: an approach for divergent assembly of functionalized quinolin-2(1H)-ones. Front Chem 2024; 12:1371978. [PMID: 38595704 PMCID: PMC11002210 DOI: 10.3389/fchem.2024.1371978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 02/26/2024] [Indexed: 04/11/2024] Open
Abstract
The first photocatalytic trichloromethyl radical-triggered annulative reactions of amide-linked 1,7-diynes with polyhalomethanes were established for the flexible assembly of functionalized quinolin-2(1H)-ones with generally acceptable yields. With the installation of the aryl group (R1) into the alkynyl moiety, C-center radical-initiated Kharasch-type addition/nucleophilic substitution/elimination cascade to produce quinolin-2(1H)-ones-incorporating gem-dihaloalkene, whereas three examples of polyhalogenated quinolin-2(1H)-ones were afforded when amide-linked 1,7-diynes bearing two terminal alkyne units were subjected to BrCX3 by exploiting dry acetonitrile as a solvent.
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Affiliation(s)
- Daixiang Chen
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Zhi-Jie Song
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Shenghu Yan
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Jia-Yin Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Yue Zhang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
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2
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Luo YC, Wang MK, Yu LC, Zhang X. Nickel-Catalyzed Selective C(sp 2 )-F Bond Alkylation of Industrially Relevant Hydrofluoroolefin HFO-1234yf. Angew Chem Int Ed Engl 2023; 62:e202308690. [PMID: 37470697 DOI: 10.1002/anie.202308690] [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: 06/20/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/21/2023]
Abstract
The selective transition-metal catalyzed C-F bond functionalization of inexpensive industrial fluorochemicals represents one of the most attractive approaches to valuable fluorinated compounds. However, the selective C(sp2 )-F bond carbofunctionalization of refrigerant hydrofluoroolefins (HFOs) remains challenging. Here, we report a nickel-catalyzed selective C(sp2 )-F bond alkylation of HFO-1234yf with alkylzinc reagents. The resulting 2-trifluoromethylalkenes can serve as a versatile synthon for diversified transformations, including the anti-Markovnikov type hydroalkylation and the synthesis of bioactive molecule analogues. Mechanistic studies reveal that lithium salt is essential to promote the oxidative addition of Ni0 (Ln ) to the C-F bond; the less electron-rich N-based ligands, such as bipyridine and pyridine-oxazoline, feature comparable or even higher oxidative addition rates than the electron-rich phosphine ligands; the strong σ-donating phosphine ligands, such as PMe3 , are detrimental to transmetallation, but the less electron-rich and bulky N-based ligands, such as pyridine-oxazoline, facilitate transmetallation and reductive elimination to form the final product.
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Affiliation(s)
- Yun-Cheng Luo
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Ming-Kuan Wang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Ling-Chao Yu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China
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3
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Niu K, Fan Q, Chi L, Rosen J, Gottfried JM, Björk J. Unveiling the formation mechanism of the biphenylene network. NANOSCALE HORIZONS 2023; 8:368-376. [PMID: 36629866 DOI: 10.1039/d2nh00528j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
We have computationally studied the formation mechanism of the biphenylene network via the intermolecular HF zipping, as well as identified key intermediates experimentally, on the Au(111) surface. We elucidate that the zipping process consists of a series of defluorinations, dehydrogenations, and C-C coupling reactions. The Au substrate not only serves as the active site for defluorination and dehydrogenation, but also forms C-Au bonds that stabilize the defluorinated and dehydrogenated phenylene radicals, leading to "standing" benzyne groups. Despite that the C-C coupling between the "standing" benzyne groups is identified as the rate-limiting step, the limiting barrier can be reduced by the adjacent chemisorbed benzyne groups. The theoretically proposed mechanism is further supported by scanning tunneling microscopy experiments, in which the key intermediate state containing chemisorbed benzyne groups can be observed. This study provides a comprehensive understanding towards the on-surface intermolecular HF zipping, anticipated to be instructive for its future applications.
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Affiliation(s)
- Kaifeng Niu
- Department of Physics, Chemistry and Biology, IFM, Linköping University, 581 83 Linköping, Sweden.
- Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Qitang Fan
- Department of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany.
| | - Lifeng Chi
- Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
- Department of Materials Science and Engineering, Macau University of Science and Technology, Macau, 999078, China
| | - Johanna Rosen
- Department of Physics, Chemistry and Biology, IFM, Linköping University, 581 83 Linköping, Sweden.
| | - J Michael Gottfried
- Department of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany.
| | - Jonas Björk
- Department of Physics, Chemistry and Biology, IFM, Linköping University, 581 83 Linköping, Sweden.
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4
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Ichikawa J. Boy Meets Fluorine! J SYN ORG CHEM JPN 2023. [DOI: 10.5059/yukigoseikyokaishi.81.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
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5
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Pang B, Wang Y, Hao L, Wu G, Ma Z, Ji Y. Tandem C-C/C-N Bond Formation via Rh(III)-Catalyzed α-Fluoroalkenylation and Sequential Annulation of 2-Arylquinazolinones and gem-Difluorostyrenes. J Org Chem 2023; 88:143-153. [PMID: 36563294 DOI: 10.1021/acs.joc.2c02006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient method of Rh(III)-catalyzed coupling reaction between 2-arylquinazolinones and gem-difluorostyrenes has been developed. In this work, two diverse structures of monofluoroalkenes and isoindolo[1,2-b]quinazolin-10(12H)-one derivatives were respectively synthesized by controlling the amount of additives (Ca(OH)2 and AgNTf2) to achieve controlled stepwise breaking of the C-F bonds of gem-difluorostyrenes. This reaction has the characteristics of a wide range of substrates and good functional group tolerance. Meanwhile, several control experiments were conducted and a plausible mechanism was proposed.
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Affiliation(s)
- Binghan Pang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yangyang Wang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Liqiang Hao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Gaorong Wu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Zhihong Ma
- Biotalk Co., LTD, Shanghai 200092, China
| | - Yafei Ji
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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6
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Salem MS, Khalid MI, Sasai H, Takizawa S. Two-pot synthesis of unsymmetrical hetero[7]helicenes with intriguing optical properties. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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7
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Motiwala HF, Armaly AM, Cacioppo JG, Coombs TC, Koehn KRK, Norwood VM, Aubé J. HFIP in Organic Synthesis. Chem Rev 2022; 122:12544-12747. [PMID: 35848353 DOI: 10.1021/acs.chemrev.1c00749] [Citation(s) in RCA: 142] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) is a polar, strongly hydrogen bond-donating solvent that has found numerous uses in organic synthesis due to its ability to stabilize ionic species, transfer protons, and engage in a range of other intermolecular interactions. The use of this solvent has exponentially increased in the past decade and has become a solvent of choice in some areas, such as C-H functionalization chemistry. In this review, following a brief history of HFIP in organic synthesis and an overview of its physical properties, literature examples of organic reactions using HFIP as a solvent or an additive are presented, emphasizing the effect of solvent of each reaction.
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Affiliation(s)
- Hashim F Motiwala
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Ahlam M Armaly
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jackson G Cacioppo
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Thomas C Coombs
- Department of Chemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403 United States
| | - Kimberly R K Koehn
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Verrill M Norwood
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jeffrey Aubé
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
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8
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Fujita T, Fukuda T, Suzuki N, Ichikawa J. Rapid Synthesis of Fused Polycyclic Heteroaromatics via Successive Vinylic/Aromatic C–F Bond Activation. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takeshi Fujita
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Takuya Fukuda
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Naoto Suzuki
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Junji Ichikawa
- University of Tsukuba Department of Chemistry 1-1-1 Tennodai 305-8571 Tsukuba JAPAN
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9
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Uematsu K, Hayasaka C, Takase K, Noguchi K, Nakano K. Transformation of Thia[7]helicene to Aza[7]helicenes and [7]Helicene-like Compounds via Aromatic Metamorphosis. Molecules 2022; 27:molecules27030606. [PMID: 35163875 PMCID: PMC8839769 DOI: 10.3390/molecules27030606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 11/27/2022] Open
Abstract
[n]Helicenes with helically twisted structures have attracted increasing interest owing to their unique properties. Therefore, it has been an important issue to develop facile synthetic methodologies which allow access to a variety of [n]helicenes. Here we report the synthesis of [7]helicenes and [7]helicene-like compounds from the thia[7]helicene as a common starting material. Desulfurative dilithiation of the thia[7]helicene and the subsequent reaction with silicon and phosphorus electrophiles afforded the silole- and phosphole-fused [7]helicene-like compounds, respectively. The cyclopentadiene-fused [7]helicene-like compound and the pyrrole-fused aza[7]helicenes were also successfully synthesized via twofold SNAr reactions of the thia[7]helicene S,S-dioxide with the carbon and nitrogen nucleophiles, respectively. The thia[7]helicene S,S-dioxide showed a slightly red-shifted absorption spectrum than the parent thia[7]helicene, which was well demonstrated by the theoretical calculations. The substituents on the silicon atom of silole-fused [7]helicene-like compounds have little impact on the longest absorption maximum. Such little effect of the substituents on absorption properties was also observed for cyclopentadiene-fused [7]helicene-like compounds and aza[7]helicenes and was well demonstrated by the theoretical calculations. The thia[7]helicene S,S-dioxide and the silole-fused [7]helicene-like compound exhibited bright blue emission, and the cyclopentadiene-fused [7]helicene-like compound and the aza[7]helicenes showed strong violet emission. Each single enantiomer of the aza[7]helicenes showed circularly-polarized luminescence with the dissymmetry factors of 4.2~4.4 × 10−3.
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Affiliation(s)
- Keisuke Uematsu
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei 184-8588, Japan; (K.U.); (C.H.); (K.T.)
| | - Chikara Hayasaka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei 184-8588, Japan; (K.U.); (C.H.); (K.T.)
| | - Ko Takase
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei 184-8588, Japan; (K.U.); (C.H.); (K.T.)
| | - Keiichi Noguchi
- Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei 184-8588, Japan;
| | - Koji Nakano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei 184-8588, Japan; (K.U.); (C.H.); (K.T.)
- Correspondence: ; Tel.: +81-42-388-7162
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10
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Sindhe H, Chaudhary B, Chowdhury N, Kamble A, Kumar V, Lad A, Sharma S. Recent advances in transition-metal catalyzed directed C–H functionalization with fluorinated building blocks. Org Chem Front 2022. [DOI: 10.1039/d1qo01544c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on the advances in transition-metal catalyzed reactions with fluorinated building blocks via directed C–H bond activation for the construction of diverse organic molecules with an insight into the probable mechanistic pathway.
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Affiliation(s)
- Haritha Sindhe
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Bharatkumar Chaudhary
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Neelanjan Chowdhury
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Akshay Kamble
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Vivek Kumar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Aishwarya Lad
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Satyasheel Sharma
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
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11
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Delamare A, Naulet G, Kauffmann B, Guichard G, Compain G. Hexafluoroisobutylation of Enolates Through a Tandem Elimination/Allylic Shift/Hydrofluorination Reaction. Chem Sci 2022; 13:9507-9514. [PMID: 36091907 PMCID: PMC9400614 DOI: 10.1039/d2sc02871a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
The isobutyl side chain is a highly prevalent hydrophobic group in drugs, and it notably constitutes the side chain of leucine. Its replacement by a hexafluorinated version containing two CF3...
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Affiliation(s)
- Aline Delamare
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
| | - Guillaume Naulet
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS, INSERM, IECB, UAR 3033 F-33600 Pessac France
| | - Gilles Guichard
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
| | - Guillaume Compain
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
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12
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Song T, Tung CH, Xu Z. Synthesis of α-trifluoromethyl sulfides through fluorosulfuration of gem-difluoroalkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00391k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new fluoro-sulfuration of gem-difluoroalkenes is demonstrated that occurs through a nucleophilic fluorination and subsequent interrupted electrophilic sulfuration cascade.
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Affiliation(s)
- Tingting Song
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, Shandong 250100, China
| | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, Shandong 250100, China
| | - Zhenghu Xu
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, Shandong 250100, China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China
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13
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Fuchibe K, Yamada A, Hachinohe K, Matsumoto K, Takayama R, Ichikawa J. Synthesis of Difluoroalkenes from Thiocarbonyl Compounds via Difluorothiiranes: Electrophilic Counterpart to Wittig-Type Difluoromethylidenation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Atsushi Yamada
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Kosei Hachinohe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Kana Matsumoto
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Ryo Takayama
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
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14
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Zhang S, Chen JF, Hu G, Zhang N, Wang N, Yin X, Chen P. Synthesis, Characterization, and Photophysical Properties of Triptycene-Based Chiral Organoboranes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Songhe Zhang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Jin-Fa Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Guofei Hu
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Niu Zhang
- Analysis & Testing Centre, Beijing Institute of Technology, Beijing 102488, People’s Republic of China
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Xiaodong Yin
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
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15
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Fujita T, Morioka R, Fukuda T, Suzuki N, Ichikawa J. Acid-mediated intermolecular C-F/C-H cross-coupling of 2-fluorobenzofurans with arenes: synthesis of 2-arylbenzofurans. Chem Commun (Camb) 2021; 57:8500-8503. [PMID: 34351333 DOI: 10.1039/d1cc03453g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Transition-metal-free acid-promoted biaryl construction was achieved via intermolecular C-F/C-H cross-coupling. By treating 2-fluorobenzofurans with arenes in the presence of AlCl3, 2-arylbenzofurans were obtained. This protocol was successfully applied to the short-step orthogonal synthesis of a bioactive 2-arylbenzofuran natural product, which allows independent transformations of C-F and C-Br bonds. Mechanistic studies indicated that α-fluorine-stabilized carbocations, generated via the protonation of 2-fluorobenzofurans, served as key intermediates. The Friedel-Crafts-type C-C bond formation between the α-fluorocarbocations and arenes, followed by hydrogen fluoride elimination, afforded 2-arylbenzofurans.
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Affiliation(s)
- Takeshi Fujita
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
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16
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Abstract
AbstractThe unique properties of fluorine-containing organic compounds make fluorine substitution attractive for the development of pharmaceuticals and various specialty materials, which have inspired the evolution of diverse C-F bond activation techniques. Although many advances have been made in functionalizations of activated C-F bonds utilizing transition metal complexes, there are fewer approaches available for nonactivated C-F bonds due to the difficulty in oxidative addition of transition metals to the inert C-F bonds. In this regard, using Lewis acid to abstract the fluoride and light/radical initiator to generate the radical intermediate have emerged as powerful tools for activating those inert C-F bonds. Meanwhile, these transition-metal-free processes are greener, economical, and for the pharmaceutical industry, without heavy metal residues. This review provides an overview of recent C-F bond activations and functionalizations under transition-metal-free conditions. The key mechanisms involved are demonstrated and discussed in detail. Finally, a brief discussion on the existing limitations of this field and our perspective are presented.
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17
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Fu Y, Qin C, Zhang Z, Shi H, Zhao J, Gong X, Shi L, Li H. [4 + 2] Cycloaddition of trifluoromethyl ketimines with 2-alkenyl azaarenes through selective C–F bond cleavage of CF 3. Org Chem Front 2021. [DOI: 10.1039/d1qo00639h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition-metal-free [4 + 2] cycloaddition of trifluoromethyl ketimines with 2-alkenyl azaarenes through selective C–F bond cleavage of CF3 has been developed to afford cis-tetrahydroxypyridine products in moderate yields under mild conditions.
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Affiliation(s)
- Yiwei Fu
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Cong Qin
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Zhiqiang Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- Centre for Computational Chemistry and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
| | - Haoyu Shi
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Jianbo Zhao
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Xueqing Gong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- Centre for Computational Chemistry and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
| | - Lei Shi
- Huabao Flavours & Fragrances Co
- Ltd
- Shanghai 201822
- China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
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18
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Zhou J, Jiang B, Guo M, Sumii Y, Shibata N. Aryl gem-Difluorovinyl Pinacolboronates: Synthesis and Utility for Suzuki-Miyaura Coupling Reaction. CHEM LETT 2020. [DOI: 10.1246/cl.200621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jun Zhou
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Bingyao Jiang
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Ming Guo
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
- Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua 321004, P. R. China
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19
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Hamrouni K, Hafedh N, Chmeck M, Aloui F. Photooxidation pathway providing 15-bromo-7-cyano[6]helicene. Chiroptical and photophysical properties and theoretical investigation. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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20
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Xiang P, He L, Li H, Qi Z, Zhang M, Fu Q, Wei J, Du X, Yi D, Wei S. Organo-photoredox catalyzed defluoroacetalation of α-trifluoromethyl alkenes for synthesis of masked γ,γ-difluoroallylic aldehydes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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21
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Mahecha-Mahecha C, Lecornué F, Akinari S, Charote T, Gamba-Sánchez D, Ohwada T, Thibaudeau S. Sequential Suzuki-Miyaura Coupling/Lewis Acid-Catalyzed Cyclization: An Entry to Functionalized Cycloalkane-Fused Naphthalenes. Org Lett 2020; 22:6267-6271. [PMID: 32806180 DOI: 10.1021/acs.orglett.0c02020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Functionalized angular cycloalkane-fused naphthalenes were prepared using a two-step process involving a Pd-catalyzed Suzuki-Miyaura coupling of aryl pinacol boronates and vinyl triflates followed by a boron trifluoride etherate-catalyzed cycloaromatization.
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Affiliation(s)
- Camilo Mahecha-Mahecha
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France.,Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Bogotá, Colombia
| | - Frédéric Lecornué
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Sumita Akinari
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France.,Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Thomas Charote
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Diego Gamba-Sánchez
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Bogotá, Colombia
| | - Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Sébastien Thibaudeau
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
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22
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Koley S, Altman RA. Recent Advances in Transition Metal-Catalyzed Functionalization of gem-Difluoroalkenes. Isr J Chem 2020; 60:313-339. [PMID: 32523163 PMCID: PMC7286626 DOI: 10.1002/ijch.201900173] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/17/2020] [Indexed: 11/11/2022]
Abstract
gem-Difluorinated alkenes are readily accessible building blocks that can undergo functionalization to provide a broad spectrum of fluorinated and non-fluorinated products. Herein, we review recent (since 2017) transition metal-catalyzed transformations of these specialized alkenes and summarize general reactivity patterns of these reactions. Many transition metal-catalyzed reactions undergo net C-F bond functionalization reactions to deliver monofluorinated products. These reactions typically proceed through β-fluoro alkylmetal intermediates that readily eliminate a β-fluoride to deliver monofluoroalkene products. A second series of reactions exploit coinage metal fluorides to add F- to the gem-difluorinated alkene, and further functionalization delivers trifluoromethyl-containing products. In stark contrast, few transition metal-catalyzed reactions proceed in net "fluorine-retentive processes" to deliver difluoromethylene-based products.
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Affiliation(s)
- Suvajit Koley
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas, 66045, USA
| | - Ryan A Altman
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas, 66045, USA
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23
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Fluorinated Phenanthrenes as Aryne Precursors: PAH Synthesis Based on Domino Ring Assembly Using 1,1‐Difluoroallenes. Chem Asian J 2020; 15:1384-1392. [DOI: 10.1002/asia.202000069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Indexed: 11/07/2022]
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24
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Stará IG, Starý I. Helically Chiral Aromatics: The Synthesis of Helicenes by [2 + 2 + 2] Cycloisomerization of π-Electron Systems. Acc Chem Res 2020; 53:144-158. [PMID: 31833763 DOI: 10.1021/acs.accounts.9b00364] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Advanced molecular nanocarbons are now in the spotlight reflecting the basic discoveries of fullerenes, carbon nanotubes, and graphene. This research area includes also the chemistry, physics, and nanoscience of nonplanar polycyclic hydrocarbons, many of which exhibit helical chirality, such as iconic helicenes and their congeners. The combination of unique π-electron systems with the chirality phenomenon makes them highly attractive in various fields of science. Helicenes are polyaromatic compounds that are composed of all-angularly annulated benzene units, but other (hetero)cycles can also be embedded into their backbone. Even though they do not contain any stereogenic center, they are inherently chiral owing to the helical shape they adopt. Hexahelicene and higher homologues are conformationally stable within a reasonable range of temperatures and, therefore, can be obtained in an enantiopure form through a racemate resolution or asymmetric synthesis. An amazing array of synthetic methods for their preparation has been developed, but only a few of them have passed the tough scrutiny to be general, robust and practical methods such as traditional photocyclodehydrogenation of diaryl olefins and recently developed transition-metal-catalyzed [2 + 2 + 2] cycloisomerization of π-electron systems, which is discussed in this Account. Alkyne [2 + 2 + 2] cycloisomerization is a highly exergonic process and is therefore suitable for forming the strained helicene backbone, three (or more) cycles of which are closed in a single operation. The typical starting materials are aromatic triynes (optionally cyanodiynes or ynedinitriles) or tetraynes with diynes that undergo intramolecular or intermolecular cyclization, respectively, catalyzed by various complexes mainly of Ni0, CoI, or RhI. Utilizing this synthetic methodology, various [5]-, [6]-, [7]-, [9]-, [11]-, [13]-, [16]-, [17]-, and [19]helicenes or their congeners, including functionalized derivatives, can be effectively prepared. Moreover, asymmetric synthesis (both catalytic and stoichiometric) of nonracemic helicenes has already been demonstrated. It relies on [2 + 2 + 2] cycloisomerization of centrally chiral triynes followed by an asymmetric transformation of the first order (controlled by the 1,3-allylic-type strain) or on enantioselective [2 + 2 + 2] cycloisomerization of alkynes catalyzed by chiral complexes mainly of Ni0 or RhI. Intriguingly, advanced helical architectures were formed such as the longest helicenes (up to oxa[19]helicene by closing 12 rings in a single synthetic operation) or laterally extended helicenes (e.g., pyreno[7]helicenes). Utilizing the aforementioned synthetic methodology, the tailor-made helical molecular nanocarbons are now better accessible to be applied in enantioselective catalysis, chirality sensing, spintronics (based on chirality induced spin selectivity), chiroptics (to produce circularly polarized light emission), organic/molecular electronics, or chiral single molecule devices.
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Affiliation(s)
- Irena G. Stará
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ivo Starý
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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25
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Fuchibe K, Takao G, Takahashi H, Ijima S, Ichikawa J. Methylarene-Based PAH Synthesis via Domino Cyclization of 1,1-Difluoro-1-alkenes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Go Takao
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Hiroki Takahashi
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shiori Ijima
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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26
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Zhou Y, Gan F, Zhang Y, He X, Shen C, Qiu H, Liu P. Selective Killing of Cancer Cells by Nonplanar Aromatic Hydrocarbon-Induced DNA Damage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1901341. [PMID: 31728285 PMCID: PMC6839640 DOI: 10.1002/advs.201901341] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/26/2019] [Indexed: 05/05/2023]
Abstract
A large number of current chemotherapeutic agents prevent the growth of tumors by inhibiting DNA synthesis of cancer cells. It has been found recently that many planar polycyclic aromatic hydrocarbons (PAHs) derivatives, previously known as carcinogenic, display anticancer activity through DNA cross-linking. However, the practical use of these PAHs is substantially limited by their low therapeutic efficiency and selectivity toward most tumors. Herein, the anticancer property of a nonplanar PAH named [4]helicenium, which exhibits highly selective cytotoxicity toward liver, lung cancer, and leukemia cells compared with normal cells, is reported. Moreover, [4]helicenium effectively inhibits tumor growth in liver cancer-bearing mice and shows little side effects in normal mice. RNA sequencing and confirmatory results demonstrate that [4]helicenium induces more DNA damage in tumor cells than in normal cells, resulting in tumor cell cycle arrest and apoptosis increment. This study reveals an unexpected role and molecular mechanism for PAHs in selectively killing tumor cells and provides an effective strategy for precision cancer therapies.
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Affiliation(s)
- Yan Zhou
- State Key Laboratory of Oncogenes and Related GenesShanghai Cancer InstituteRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200032China
- Central LaboratoryRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China
| | - Fuwei Gan
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai200240China
| | - Yuanliang Zhang
- State Key Laboratory of Medical GenomicsShanghai Institute of HematologyRuijin HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200025China
| | - Xiaozhen He
- State Key Laboratory of Oncogenes and Related GenesShanghai Cancer InstituteRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200032China
- Central LaboratoryRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China
| | - Chengshuo Shen
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai200240China
| | - Huibin Qiu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai200240China
| | - Peifeng Liu
- State Key Laboratory of Oncogenes and Related GenesShanghai Cancer InstituteRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200032China
- Central LaboratoryRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China
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27
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Mathew BP, Kuram MR. Emerging C H functionalization strategies for constructing fused polycyclic aromatic hydrocarbons and nanographenes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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28
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Wang X, Wang Z, Asanuma Y, Nishihara Y. Synthesis of 2-Substituted Propenes by Bidentate Phosphine-Assisted Methylenation of Acyl Fluorides and Acyl Chlorides with AlMe3. Org Lett 2019; 21:3640-3643. [DOI: 10.1021/acs.orglett.9b01059] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiu Wang
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Zhenhua Wang
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yuya Asanuma
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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29
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Tok OL, Lang K, Růžička A, Cvačka J. Helicenes Built from Silacyclopentadienes via Ring-by-Ring Knitting of the Helical Framework. Angew Chem Int Ed Engl 2019; 58:1654-1658. [PMID: 30548911 DOI: 10.1002/anie.201811140] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/14/2018] [Indexed: 12/25/2022]
Abstract
Despite the apparent diversity of the protocols developed for the synthesis of helicenes, they essentially follow the same strategy: the closure of one, or several, internal rings in a key step. Herein, we report the synthesis of a new family of the heterohelicenes consisting of fused silacyclopentadiene rings formed via a facile and novel process. The treatment of oligo(alkynilydenesilylene) precursors of type H2 C=CH-(SiMe2 -C≡C)n -R (n=3-7), bearing a vinyl group on the terminal silicon atom, with 9-borabicyclononane leads first to 1,2-hydroboration of the terminal double bond which then continues with a cascade of intramolecular 1,1-carboboration reactions accompanied with the closure of a new silole ring after each step affording the target silahelicenes with, currently, up to seven condensed silole rings and with excellent yields. According XRD analysis, the seven fused silole rings of the heptacyclic compound 11 b form an almost complete turn of a helix. The presented one-pot sequence of reactions is the first example of ring-by-ring knitting of a helical framework starting from easily available linear precursors.
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Affiliation(s)
- Oleg L Tok
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 25068, Řež, Czech Republic
| | - Kamil Lang
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 25068, Řež, Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 16610, Prague 6, Czech Republic
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30
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Peng Y, Zhang X, Qi X, He Q, Zhang B, Hao J, Yang C. Metal-Free Access to (E/Z
)-α-Fluorovinyl Phosphorus Compounds from gem
-Difluorostyrenes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801602] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yingyuan Peng
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 200436 Shanghai China
| | - Xiaofei Zhang
- State Key Laboratory of Drug Research; Shanghai Institute of Materia Medica; Chinese Academy of Sciences; 555 Zu Chong Zhi Road 201203 Shanghai China
| | - Xueyu Qi
- State Key Laboratory of Drug Research; Shanghai Institute of Materia Medica; Chinese Academy of Sciences; 555 Zu Chong Zhi Road 201203 Shanghai China
| | - Qian He
- State Key Laboratory of Drug Research; Shanghai Institute of Materia Medica; Chinese Academy of Sciences; 555 Zu Chong Zhi Road 201203 Shanghai China
| | - Bin Zhang
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 200436 Shanghai China
| | - Jian Hao
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 200436 Shanghai China
| | - Chunhao Yang
- State Key Laboratory of Drug Research; Shanghai Institute of Materia Medica; Chinese Academy of Sciences; 555 Zu Chong Zhi Road 201203 Shanghai China
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31
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Kolmer M, Zuzak R, Steiner AK, Zajac L, Engelund M, Godlewski S, Szymonski M, Amsharov K. Fluorine-programmed nanozipping to tailored nanographenes on rutile TiO2 surfaces. Science 2019; 363:57-60. [DOI: 10.1126/science.aav4954] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 11/16/2018] [Indexed: 01/20/2023]
Abstract
The rational synthesis of nanographenes and carbon nanoribbons directly on nonmetallic surfaces has been an elusive goal for a long time. We report that activation of the carbon (C)–fluorine (F) bond is a reliable and versatile tool enabling intramolecular aryl-aryl coupling directly on metal oxide surfaces. A challenging multistep transformation enabled by C–F bond activation led to a dominolike coupling that yielded tailored nanographenes directly on the rutile titania surface. Because of efficient regioselective zipping, we obtained the target nanographenes from flexible precursors. Fluorine positions in the precursor structure unambiguously dictated the running of the “zipping program,” resulting in the rolling up of oligophenylene chains. The high efficiency of the hydrogen fluoride zipping makes our approach attractive for the rational synthesis of nanographenes and nanoribbons directly on insulating and semiconducting surfaces.
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32
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Tok OL, Lang K, Růžička A, Cvačka J. Helicenes Built from Silacyclopentadienes via Ring‐by‐Ring Knitting of the Helical Framework. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Oleg L. Tok
- Institute of Inorganic ChemistryAcademy of Sciences of the Czech Republic 25068 Řež Czech Republic
| | - Kamil Lang
- Institute of Inorganic ChemistryAcademy of Sciences of the Czech Republic 25068 Řež Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic ChemistryFaculty of Chemical TechnologyUniversity of Pardubice Studentská 573 53210 Pardubice Czech Republic
| | - Josef Cvačka
- Institute of Organic Chemistry and BiochemistryAcademy of Sciences of the Czech Republic Flemingovo nam. 2 16610 Prague 6 Czech Republic
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33
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Tian F, Yan G, Yu J. Recent advances in the synthesis and applications of α-(trifluoromethyl)styrenes in organic synthesis. Chem Commun (Camb) 2019; 55:13486-13505. [DOI: 10.1039/c9cc06465f] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
α-Trifluoromethylstyrene derivatives are versatile synthetic intermediates for the preparation of more complex fluorinated compounds.
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Affiliation(s)
- Feitao Tian
- Department of Chemistry
- Lishui University
- Lishui City
- P. R. China
| | - Guobing Yan
- Department of Chemistry
- Lishui University
- Lishui City
- P. R. China
| | - Jian Yu
- Department of Chemistry
- Lishui University
- Lishui City
- P. R. China
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34
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Ichikawa J, Fuchibe K, Tsuda N, Shigeno K. Construction of Pinpoint-Fluorinated Benzothiophene Frameworks Using Palladium-Catalyzed Cyclization of o-(Fluorovinyl)phenyl-Substituted Thiophenes. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)95] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Gao FT, Fang Z, Su RR, Rui PX, Hu XG. Hydroximoyl fluorides as the precursors of nitrile oxides: synthesis, stability and [3 + 2]-cycloaddition with alkynes. Org Biomol Chem 2018; 16:9211-9217. [PMID: 30468229 DOI: 10.1039/c8ob02721h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The transformation of hydroximoyl fluorides to nitrile oxides for [3 + 2]-cycloaddition with alkynes has been achieved for the first time. The hydroximoyl fluorides used in this work appeared to be not stable, which was proved by a series of experiments. A DFT calculation was performed to better understand the properties of hydroximoyl fluorides. Although not stable, the hydroximoyl fluorides could be successfully converted to the corresponding nitrile oxides for in situ [3 + 2]-cycloaddition with alkynes to yield the isoxazoles. Furthermore, it was feasible to conduct [3 + 2]-cycloaddition reaction without purification after the synthesis of hydroximoyl fluorides from gem-difluoroalkenes. By investigating a class of interesting yet previously rarely explored fluorinated compounds, this work sheds new light on the stability and reactivity of a C-F bond on a C[double bond, length as m-dash]N double bond.
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Affiliation(s)
- Feng-Teng Gao
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China.
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36
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Fuchibe K, Oki R, Hatta H, Ichikawa J. Single C−F Bond Activation of the CF
3
Group with a Lewis Acid: CF
3
‐Cyclopropanes as Versatile 4,4‐Difluorohomoallylating Agents. Chemistry 2018; 24:17932-17935. [DOI: 10.1002/chem.201805054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Rie Oki
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Hibiki Hatta
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
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37
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Hu J, Yang Y, Lou Z, Ni C, Hu J. Fluoro-Hydroxylation of gem
-Difluoroalkenes: Synthesis of 18
O-labeled α-CF3
Alcohols. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800426] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jingyu Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu, Shanghai 200032 China
| | - Yide Yang
- School of Physical Science and Technology, ShanghaiTech University; 100 Haike Road, Shanghai 201210 China
| | - Zhengzhao Lou
- School of Physical Science and Technology, ShanghaiTech University; 100 Haike Road, Shanghai 201210 China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu, Shanghai 200032 China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu, Shanghai 200032 China
- School of Physical Science and Technology, ShanghaiTech University; 100 Haike Road, Shanghai 201210 China
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38
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Fuchibe K, Fujita T, Ichikawa J. Pinpoint-Fluorinated Polycyclic Aromatic Hydrocarbons (F-PAHs): Their Synthesis via Electrophilic Activation of Fluoroalkenes and Properties. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
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39
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Jaroschik F. Picking One out of Three: Selective Single C-F Activation in Trifluoromethyl Groups. Chemistry 2018; 24:14572-14582. [PMID: 29923644 DOI: 10.1002/chem.201801702] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/03/2018] [Indexed: 01/01/2023]
Abstract
The introduction of a trifluoromethyl (CF3 ) group into an organic molecule can modify its chemical behavior and lead to changes in its physicochemical and pharmacological properties. The CF3 group is often chosen for its chemical inertness and stability, which are related to the strong C-F bonds. In recent years, the potential of gaining straightforward access to difluorinated compounds through selective single C-F activation in CF3 groups has been unveiled. This review describes the latest methodologies for the synthesis of difluoromethylated arenes, difluoroalkenes and difluorinated aldol products of potential synthetic and/or biological interest, employing low-valent metals, transition metal catalysis, FLP and Lewis acid mediated transformations as well as photoredox catalysis.
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Affiliation(s)
- Florian Jaroschik
- Institut Charles Gerhardt Montpellier UMR 5253, Ecole Nationale Supérieure de Chimie de Montpellier, 240 avenue du Prof Jeanbrau, 34080, Montpellier, France
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40
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Khanal HD, Thombal RS, Maezono SMB, Lee YR. Designs and Strategies for the Halo-Functionalization of Diazo Compounds. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800340] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Hari Datta Khanal
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | - Raju S. Thombal
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | - Shizuka Mei B. Maezono
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
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41
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Fujita T, Kinoshita R, Takanohashi T, Suzuki N, Ichikawa J. Ring-size-selective construction of fluorine-containing carbocycles via intramolecular iodoarylation of 1,1-difluoro-1-alkenes. Beilstein J Org Chem 2018; 13:2682-2689. [PMID: 29564005 PMCID: PMC5753149 DOI: 10.3762/bjoc.13.266] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 11/29/2017] [Indexed: 01/02/2023] Open
Abstract
1,1-Difluoro-1-alkenes bearing a biaryl-2-yl group effectively underwent site-selective intramolecular iodoarylation by the appropriate cationic iodine species. Iodoarylation of 2-(2-aryl-3,3-difluoroallyl)biaryls proceeded via regioselective carbon–carbon bond formation at the carbon atoms in β-position to the fluorine substituents, thereby constructing dibenzo-fused six-membered carbocycles bearing a difluoroiodomethyl group. In contrast, 2-(3,3-difluoroallyl)biaryls underwent a similar cyclization at the α-carbon atoms to afford ring-difluorinated seven-membered carbocycles.
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Affiliation(s)
- Takeshi Fujita
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Ryo Kinoshita
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Tsuyoshi Takanohashi
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Naoto Suzuki
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
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42
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Hsieh MT, Lee KH, Kuo SC, Lin HC. Lewis acid-mediated defluorinative [3+2] cycloaddition/aromatization cascade of 2,2-difluoroethanol systems with nitriles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701581] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Min-Tsang Hsieh
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
- Chinese Medicinal Research and Development Center; China Medical University Hospital; Taiwan, R.O.C
- Natural Products Research Laboratories; UNC Eshelman School of Pharmacy; University of North Carolina; Chapel Hill, NC 27599 United States
| | - Kuo-Hsiung Lee
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
- Chinese Medicinal Research and Development Center; China Medical University Hospital; Taiwan, R.O.C
| | - Sheng-Chu Kuo
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
| | - Hui-Chang Lin
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
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43
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Gong TJ, Xu MY, Yu SH, Yu CG, Su W, Lu X, Xiao B, Fu Y. Rhodium(III)-Catalyzed Directed C–H Coupling with Methyl Trifluoroacrylate: Diverse Synthesis of Fluoroalkenes and Heterocycles. Org Lett 2018; 20:570-573. [DOI: 10.1021/acs.orglett.7b03677] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tian-Jun Gong
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Meng-Yu Xu
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Shang-Hai Yu
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Chu-Guo Yu
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Wei Su
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Xi Lu
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Bin Xiao
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Yao Fu
- Hefei National Laboratory
for Physical Sciences at the Microscale, CAS Key Laboratory of Urban
Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean
Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
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44
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Fuchibe K, Hatta H, Oh K, Oki R, Ichikawa J. Lewis Acid Promoted Single C-F Bond Activation of the CF3
Group: SN
1′-Type 3,3-Difluoroallylation of Arenes with 2-Trifluoromethyl-1-alkenes. Angew Chem Int Ed Engl 2017; 56:5890-5893. [DOI: 10.1002/anie.201701985] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Hibiki Hatta
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Ken Oh
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Rie Oki
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
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45
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Fuchibe K, Hatta H, Oh K, Oki R, Ichikawa J. Lewis Acid Promoted Single C-F Bond Activation of the CF3
Group: SN
1′-Type 3,3-Difluoroallylation of Arenes with 2-Trifluoromethyl-1-alkenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701985] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Hibiki Hatta
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Ken Oh
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Rie Oki
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
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46
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Otani T, Tsuyuki A, Iwachi T, Someya S, Tateno K, Kawai H, Saito T, Kanyiva KS, Shibata T. Facile Two-Step Synthesis of 1,10-Phenanthroline-Derived Polyaza[7]helicenes with High Fluorescence and CPL Efficiency. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700507] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takashi Otani
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
- Course of Chemical Engineering; National Institute of Technology Anan College; 265 Aoki, Minobayashi, Anan Tokushima 774-0017 Japan
- Research Institute for Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku, T okyo 162-8601 Japan
- JST, ACT-C; 4-1-8 Honcho, Kawaguchi Saitama 3 32-0012 Japan
| | - Ami Tsuyuki
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Taiki Iwachi
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Satoshi Someya
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kotaro Tateno
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Hidetoshi Kawai
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Takao Saito
- Research Institute for Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku, T okyo 162-8601 Japan
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Kyalo Stephen Kanyiva
- International Center for Science and Engineering Programs (ICSEP); Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
- JST, ACT-C; 4-1-8 Honcho, Kawaguchi Saitama 3 32-0012 Japan
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47
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Otani T, Tsuyuki A, Iwachi T, Someya S, Tateno K, Kawai H, Saito T, Kanyiva KS, Shibata T. Facile Two-Step Synthesis of 1,10-Phenanthroline-Derived Polyaza[7]helicenes with High Fluorescence and CPL Efficiency. Angew Chem Int Ed Engl 2017; 56:3906-3910. [DOI: 10.1002/anie.201700507] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Indexed: 01/03/2023]
Affiliation(s)
- Takashi Otani
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
- Course of Chemical Engineering; National Institute of Technology Anan College; 265 Aoki, Minobayashi, Anan Tokushima 774-0017 Japan
- Research Institute for Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku, T okyo 162-8601 Japan
- JST, ACT-C; 4-1-8 Honcho, Kawaguchi Saitama 3 32-0012 Japan
| | - Ami Tsuyuki
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Taiki Iwachi
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Satoshi Someya
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kotaro Tateno
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Hidetoshi Kawai
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Takao Saito
- Research Institute for Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku, T okyo 162-8601 Japan
- Department of Chemistry; Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku Tokyo 162-8601 Japan
| | - Kyalo Stephen Kanyiva
- International Center for Science and Engineering Programs (ICSEP); Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
- JST, ACT-C; 4-1-8 Honcho, Kawaguchi Saitama 3 32-0012 Japan
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48
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Zhang X, Cao S. Recent advances in the synthesis and CF functionalization of gem-difluoroalkenes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.054] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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49
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Cao CR, Ou S, Jiang M, Liu JT. An efficient method for the synthesis of gem-difluoroolefins. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Fuchibe K, Takayama R, Yokoyama T, Ichikawa J. Regioselective Synthesis of α-Fluorinated Cyclopentenones by Organocatalytic Difluorocyclopropanation and Fluorine-Directed and Fluorine-Activated Nazarov Cyclization. Chemistry 2017; 23:2831-2838. [DOI: 10.1002/chem.201604578] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Indexed: 01/15/2023]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Ryo Takayama
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Takaharu Yokoyama
- Department of Applied Chemistry; Faculty of Engineering; Kyushu Institute of Technology; Kitakyushu Fukuoka 804-8550 Japan
| | - Junji Ichikawa
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
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