1
|
Yoshida S. C-F Transformations of Benzotrifluorides by the Activation of Ortho-Hydrosilyl Group. CHEM REC 2023; 23:e202200308. [PMID: 36762730 DOI: 10.1002/tcr.202200308] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Indexed: 02/11/2023]
Abstract
Single C-F transformations of aromatic trifluoromethyl compounds are challenging issues due to the strong C-F bond. We have recently developed selective methods for single C-F transformations such as allylation of o-hydrosilyl-substituted benzotrifluorides through the hydride abstraction with trityl cations. Single C-F thiolation and azidation of o-(hydrosilyl)benzotrifluorides were achieved using trityl sulfides and trityl azide catalyzed by Yb(OTf)3 . Treatment of o-(hydrosilyl)benzotrifluorides with trityl chloride resulted in single C-F chlorination. The resulting fluorosilyl group served in further transformations including protonation, halogenation, and Hiyama cross-coupling with C-Si cleavage. We also synthesized benzyl fluorides by LiAlH4 -reduction of the resulting fluorosilanes and further C-F transformations. These methods enabled us to prepare a broad range of organofluorines from simple benzotrifluorides through C-F and C-Si transformations.
Collapse
Affiliation(s)
- Suguru Yoshida
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| |
Collapse
|
2
|
Ghosh S, Qu ZW, Roy S, Grimme S, Chatterjee I. Photoredox Catalyzed Single C-F Bond Activation of Trifluoromethyl Ketones: A Solvent Controlled Divergent Access of gem-Difluoromethylene Containing Scaffolds. Chemistry 2023; 29:e202203428. [PMID: 36445786 DOI: 10.1002/chem.202203428] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 11/30/2022]
Abstract
Selective defluorinative functionalization of trifluoromethyl ketones is a long-standing challenge owing to the exhaustive mode of the process. To meet the demands for the installation of the gem-difluoromethylene unit for the construction of the molecular architectures of well-known pharmaceuticals and agrochemicals, a distinct pathway is thereby highly desirable. Here, a protocol is introduced that allows the divergent synthesis of gem-difluoromethylene group containing tetrahydrofuran derivatives and linear ketones via single C-F bond activation of trifluoromethyl ketones using visible-light photoredox catalysis in the presence of suitable olefins as trapping partner. The choice of appropriate solvent and catalyst plays a significant role in controlling the divergent behavior of this protocol. Highly reducing photo-excited catalysts are found to be responsible for the generation of α,α-difluoromethyl ketone (DFMK) radicals as the key intermediate via a SET process. This protocol also results in a high diastereoselectivity towards the formation of partially fluorinated cyclic ketal derivatives with simultaneous construction of one C-C and two C-O bonds. State-of-the-art DFT calculations are performed to address the origin of diastereoselectivity as well as the divergence of this protocol.
Collapse
Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Clausius Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Sourav Roy
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Clausius Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Indranil Chatterjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| |
Collapse
|
3
|
Haggam RA. Microwave-assisted intramolecular palladium-mediated cyclizations of o-iodobenzophenones for methoxy fluoren-9-ones. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2095210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Reda A. Haggam
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Medina, Saudi Arabia
| |
Collapse
|
4
|
Du X, Zhang WM, Zhang XG, Tu HY. Palladium‐Catalyzed Selective C‐F Bond Cleavage of Trifluoropropanamides Leading to (Z)‐N‐α‐Fluorovinylindoles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
5
|
Copper catalyzed hydrodefluorination of propargylic gem-difluorides with “triple bonds migration”. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
6
|
Yan G. Photochemical and Electrochemical Strategies for Hydrodefluorination of Fluorinated Organic Compounds. Chemistry 2022; 28:e202200231. [PMID: 35301767 DOI: 10.1002/chem.202200231] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Indexed: 12/20/2022]
Abstract
Hydrodefluorination (HDF) is a very important fundamental transformation for conversion of the C-F bond into the C-H bond in organic synthesis. In the past decade, much progress has been achieved with HDF through the utility of low-valent metals, transition-metal complexes and main-group Lewis acids. Recently, novel methods have been introduced for this purpose through photo- and electrochemical pathways, which are of great significance, due to their considerable environmental and economical advantages. This Review highlights the HDF of fluorinated organic compounds (FOCs) through photo- and electrochemical strategies, along with mechanistic insights.
Collapse
Affiliation(s)
- Guobing Yan
- Department of Chemistry, College of Jiyang, Zhejiang A&F University, Zhuji, Zhejiang, 311800, P. R. China
| |
Collapse
|
7
|
Ghosh S, Qu Z, Pradhan S, Ghosh A, Grimme S, Chatterjee I. HFIP‐Assisted Single C−F Bond Activation of Trifluoromethyl Ketones using Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Soumen Ghosh
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| | - Zheng‐Wang Qu
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Beringstrasse 4 53115 Bonn Germany
| | - Suman Pradhan
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| | - Avisek Ghosh
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Beringstrasse 4 53115 Bonn Germany
| | - Indranil Chatterjee
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| |
Collapse
|
8
|
Dickinson CF, Yap GPA, Tius MA. Synthesis of Fluorenes and Dibenzo[ g,p]chrysenes through an Oxidative Cascade. J Org Chem 2022; 87:1559-1563. [PMID: 35014253 DOI: 10.1021/acs.joc.1c02583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed robust, operationally simple syntheses of fluorenes and of dibenzo[g,p]chrysenes through oxidative cascade processes. These structures that are commonly encountered in optoelectronic materials, dyes, and pharmaceutical products are accessible from 1,4-dioxaspiro[4.5]decan-8-one. The reactions are conducted open to air with inexpensive, safe CuBr2 or CuCl2.
Collapse
Affiliation(s)
- Cody F Dickinson
- Chemistry Department, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Glenn P A Yap
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Marcus A Tius
- Chemistry Department, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| |
Collapse
|
9
|
Ge D, Chu XQ. Multiple-fold C–F bond functionalization for the synthesis of (hetero)cyclic compounds: fluorine as a detachable chemical handle. Org Chem Front 2022. [DOI: 10.1039/d1qo01749g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We highlighted the recent advances in the field of multiple-fold C–F bond functionalization for the synthesis of (hetero)cyclic compounds.
Collapse
Affiliation(s)
- Danhua Ge
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xue-Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| |
Collapse
|
10
|
Jiang Z, Sekine K, Kuninobu Y. Synthesis of fluorenes and their related compounds from biaryls and Meldrum's acid derivatives. Chem Commun (Camb) 2021; 58:843-846. [PMID: 34931637 DOI: 10.1039/d1cc06212c] [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 synthetic method for preparing fluorenes from amino group-containing biaryls and Meldrum's acid derivatives was developed. The reaction proceeded without a catalyst and loss of functional groups. The corresponding six- and seven-membered cyclic products were obtained using biaryl ether and ortho-terphenyl as substrates, respectively.
Collapse
Affiliation(s)
- Zhiyan Jiang
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan.
| | - Kohei Sekine
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan. .,Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan
| | - Yoichiro Kuninobu
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan. .,Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-Shi, Fukuoka 816-8580, Japan
| |
Collapse
|
11
|
Ghosh S, Qu ZW, Pradhan S, Ghosh A, Grimme S, Chatterjee I. HFIP-Assisted Single C-F Bond Activation of Trifluoromethyl Ketones using Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2021; 61:e202115272. [PMID: 34821454 DOI: 10.1002/anie.202115272] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Indexed: 11/07/2022]
Abstract
A visible light photoredox catalytic method for the selective cleavage of single strong C-F bond in trifluoromethyl ketones is reported. Single electron reduction of trifluoromethyl ketones generates difluoromethyl radicals which can be engaged in intermolecular C-C bond formation with N-methyl-N-arylmethacrylamides to furnish fluorine-containing oxindole derivatives in good yields. The reaction shows excellent chemoselectivity with good functional group tolerance under mild conditions. 1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) as a solvent plays a critical role for the selective single C-F bond cleavage. High-level DFT calculations are depicted to shed light on the mechanism.
Collapse
Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Suman Pradhan
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Avisek Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Indranil Chatterjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| |
Collapse
|
12
|
Luo Y, Liu Z, Yang G, Wang T, Bin Z, Lan J, Wu D, You J. Iridium(III)-Catalyzed Diarylation/Annulation of Benzoic Acids: Facile Access to Multi-Aryl Spirobifluorenes as Pure Hydrocarbon Hosts for High-Performance OLEDs. Angew Chem Int Ed Engl 2021; 60:18852-18859. [PMID: 34160136 DOI: 10.1002/anie.202106315] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Indexed: 11/11/2022]
Abstract
Herein disclosed is the first example of diarylation/annulation of benzoic acids via an iridium catalyst system. This protocol provides a step-economic and highly efficient pathway to 1-aryl, 1,3-diaryl, 1,7-diaryl and 1,3,7-triaryl spirobifluorenes from readily available starting materials. The applications of multi-aryl spirobifluorenes as pure hydrocarbon (PHC) hosts for red, green, and blue (RGB) phosphorescent organic light-emitting diodes (PhOLEDs) were explored. Due to high triplet energies, 1,3-diaryl spirobifluorenes exhibit the potential as the host material of blue PhOLEDs. 1,7-Diaryl spirobifluorene can serve as the host of green PhOLEDs. 1,3,7-Triaryl spirobifluorene is a high-performance host for red PhOLEDs, which exhibits a high external quantum efficiency (EQE) up to 27.3 %. This work not only exemplifies the great potential of multi-aryl spirobifluorenes as PHC hosts, but also offers a new approach for the synthesis of these PHC hosts.
Collapse
Affiliation(s)
- Yuanyuan Luo
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zheng Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Ge Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianhong Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zhengyang Bin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| |
Collapse
|
13
|
Luo Y, Liu Z, Yang G, Wang T, Bin Z, Lan J, Wu D, You J. Iridium(III)‐Catalyzed Diarylation/Annulation of Benzoic Acids: Facile Access to Multi‐Aryl Spirobifluorenes as Pure Hydrocarbon Hosts for High‐Performance OLEDs. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuanyuan Luo
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Zheng Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Ge Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Tianhong Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Zhengyang Bin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| |
Collapse
|
14
|
Zhao B, Rogge T, Ackermann L, Shi Z. Metal-catalysed C-Het (F, O, S, N) and C-C bond arylation. Chem Soc Rev 2021; 50:8903-8953. [PMID: 34190223 DOI: 10.1039/c9cs00571d] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The formation of C-aryl bonds has been the focus of intensive research over the last decades for the construction of complex molecules from simple, readily available feedstocks. Traditionally, these strategies involve the coupling of organohalides (I, Br, Cl) with organometallic reagents (Mg, Zn, B, Si, Sn,…) such as Kumada-Corriu, Negishi, Suzuki-Miyaura, Hiyama and Sonogashira cross-couplings. More recently, alternative methods have provided access to these products by reactions with less reactive C-Het (F, O, S, N) and C-C bonds. Compared to traditional methods, the direct cleavage and arylation of these chemical bonds, the essential link in accessible feedstocks, has become increasingly important from the viewpoint of step-economy and functional-group compatibility. This comprehensive review aims to outline the development and advances of this topic, which was organized into (1) C-F bond arylation, (2) C-O bond arylation, (3) C-S bond arylation, (4) C-N bond arylation, and (5) C-C bond arylation. Substantial attention has been paid to the strategies and mechanistic investigations. We hope that this review can trigger chemists to discover more efficient methodologies to access arylation products by cleavage of these C-Het and C-C bonds.
Collapse
Affiliation(s)
- Binlin Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | | | | | | |
Collapse
|
15
|
Kadikova RN, Ramazanov IR, Gabdullin AM, Mozgovoj OS, Dzhemilev UM. Niobium- and zirconium-catalyzed reactions of substituted 2 alkynylamines with Et 2Zn. RSC Adv 2021; 11:4631-4638. [PMID: 35424400 PMCID: PMC8694551 DOI: 10.1039/d0ra10132j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/13/2021] [Indexed: 01/02/2023] Open
Abstract
The NbCl5-EtMgBr-catalyzed reaction of N,N-disubstituted 2-alkynylamines with Et2Zn followed by hydrolysis or deuterolysis affords (2Z)-alkenylamines (reduction products of alkyne) in high yields. The reaction of N,N-disubstituted 2-alkynylamines with Et2Zn catalyzed by the Cp2ZrCl2-EtMgBr system occurs as 2-zincoethylzincation, resulting, after deuterolysis or iodinolysis, in the regio- and stereoselective formation of the corresponding dideuterated and diiodinated 2-alkenylamine derivatives with a trisubstituted double bond. This study demonstrates the difference between the catalytic effects of NbCl5 and Cp2ZrCl2 on the pathway of reaction of tertiary 2-alkynylamines with Et2Zn in the presence of catalytic amounts of EtMgBr.
Collapse
Affiliation(s)
- Rita N Kadikova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Ilfir R Ramazanov
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Azat M Gabdullin
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Oleg S Mozgovoj
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Usein M Dzhemilev
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| |
Collapse
|
16
|
He SY, Yan XW, Tu HY, Zhang XG. Palladium-catalyzed selective defluorinative arylation for the efficient stereospecific synthesis of ( E)-β-fluoroacrylamides. Org Chem Front 2021. [DOI: 10.1039/d1qo00721a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A practical and efficient method for the synthesis of (E)-β-fluoroacrylamides was developed by the selective defluorinative arylation of trifluoropropanamides with arylboronic acids.
Collapse
Affiliation(s)
- Shi-Yu He
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiao-Wei Yan
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
| | - Hai-Yong Tu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xing-Guo Zhang
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
17
|
Yan G, Qiu K, Guo M. Recent advance in the C–F bond functionalization of trifluoromethyl-containing compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00037c] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The C–F bond is the strongest single bond in organic compounds.
Collapse
Affiliation(s)
- Guobing Yan
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
| | - Kaiying Qiu
- Department of Chemistry
- Lishui University
- Lishui 323000
- China
| | - Ming Guo
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
| |
Collapse
|
18
|
Zeng H, Cai Y, Jiang H, Zhu C. Two C(sp 3)-F Bond Activation in a CF 3 Group: ipso-Defluorinative Amination Triggered 1,3-Diamination of (Trifluoromethyl)alkenes with Indoles, Carbazoles, Pyrroles, and Sulfonamides. Org Lett 2021; 23:66-70. [PMID: 33321040 DOI: 10.1021/acs.orglett.0c03708] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel strategy enabled cleavage of two C(sp3)-F bonds in a CF3 group is reported. Triggered by ipso-defluorinative amination, this 1,3-diamination of (trifluoromethyl)alkenes with indoles, carbazoles, pyrroles, and sulfonamides gave acyclic 1,3-diamine products bearing a monofluoroalkene moiety in high yields with good to excellent Z/E selectivities. Preliminary mechanistic studies enable the isolation of the reaction intermediate and indicate that a unique sequential ipso-/γ-selective defluorinative amination pathway is involved in this transformation.
Collapse
Affiliation(s)
- Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Yingying Cai
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| |
Collapse
|
19
|
Ikeda M, Matsuzawa T, Morita T, Hosoya T, Yoshida S. Synthesis of Diverse Aromatic Ketones through C−F Cleavage of Trifluoromethyl Group. Chemistry 2020; 26:12333-12337. [DOI: 10.1002/chem.202001816] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Mai Ikeda
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Tsubasa Matsuzawa
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Takamoto Morita
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| |
Collapse
|
20
|
Kim Y, Kanemoto K, Shimomori K, Hosoya T, Yoshida S. Functionalization of a Single C-F Bond of Trifluoromethylarenes Assisted by an ortho-Silyl Group Using a Trityl-Based All-in-One Reagent with Ytterbium Triflate Catalyst. Chemistry 2020; 26:6136-6140. [PMID: 32185819 DOI: 10.1002/chem.202001315] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Indexed: 12/24/2022]
Abstract
Catalytic thiolation and azidation of a single C-F bond of trifluoromethylarenes were achieved assisted by an ortho-silyl group with all-in-one reagents to generate a trityl cation and nucleophiles. The reactions catalyzed by ytterbium triflate efficiently afforded a wide variety of difluoromethylenes avoiding the further C-F bond cleavage, by virtue of the mild conditions without the generation of a Brønsted acid.
Collapse
Affiliation(s)
- Youngchan Kim
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Kazuya Kanemoto
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Ken Shimomori
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| |
Collapse
|
21
|
Hong G, Nahide PD, Kozlowski MC. Cyanomethylation of Substituted Fluorenes and Oxindoles with Alkyl Nitriles. Org Lett 2020; 22:1563-1568. [PMID: 32043885 DOI: 10.1021/acs.orglett.0c00160] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first example of metal-free cyanomethylenation from alkyl nitriles of sp3 C-H bonds to afford quaternary carbon centers is described. This oxidative protocol is operationally simple and features good functional group compatibility. This method provides a novel approach to highly functionalized fluorene and oxindole derivatives, which are commonly used in material and pharmaceutical areas. Control experiments provide evidence of a radical reaction process.
Collapse
Affiliation(s)
- Gang Hong
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Pradip D Nahide
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| |
Collapse
|
22
|
He SY, Zhang XG. Palladium-catalyzed selective defluorinative sulfenylation for the synthesis of fluorovinylthioethers. Org Chem Front 2020. [DOI: 10.1039/d0qo00818d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient transformation of trifluoromethylated benzyl bromides to monofluoroalkenes through Pd-catalyzed selective defluorinative sulfenylation is described.
Collapse
Affiliation(s)
- Shi-Yu He
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization
| |
Collapse
|
23
|
Fu WC, Kwong FY. A denitrogenative palladium-catalyzed cascade for regioselective synthesis of fluorenes. Chem Sci 2019; 11:1411-1417. [PMID: 34123265 PMCID: PMC8148384 DOI: 10.1039/c9sc04062e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
We herein report a denitrogenative palladium-catalyzed cascade for the modular and regioselective synthesis of polysubstituted fluorenes. Hydrazone facilitates the Pd(ii) to Pd(iv) oxidative addition in a Catellani pathway and is also the methylene synthon in the proposed reaction. Aryl iodides and 2-bromoarylaldehyde hydrazones undergo a norbornene-controlled tandem reaction sequence to give a broad scope of fluorenes in the presence of a palladium catalyst. The method described is scalable and adaptable to a three-component reaction with in situ generation of the hydrazone group. Preliminary mechanistic investigations have been conducted.
Collapse
Affiliation(s)
- Wai Chung Fu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin New Territories Hong Kong
| | - Fuk Yee Kwong
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin New Territories Hong Kong
| |
Collapse
|
24
|
Oakley JV, Stanley TJ, Jesse KA, Melanese AK, Alvarez AA, Prince AL, Cain SE, Wenzel AG, Iafe RG. Gold-Catalyzed Friedel-Crafts-Like Reaction of Benzylic Alcohols to Afford 1,1-Diarylalkanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- James V. Oakley
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| | - Tyler J. Stanley
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| | - Kate A. Jesse
- Keck Science Department; Claremont McKenna, Pitzer, and Scripps Colleges; 925 N. Mills Ave 91711 Claremont CA USA
| | - Amanda K. Melanese
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| | - Araceli A. Alvarez
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| | - Aloha L. Prince
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| | - Stephanie E. Cain
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| | - Anna G. Wenzel
- Keck Science Department; Claremont McKenna, Pitzer, and Scripps Colleges; 925 N. Mills Ave 91711 Claremont CA USA
| | - Robert G. Iafe
- Department of Chemistry and Biochemistry; California State University San Marcos; 333 S. Twin Oaks Valley Rd 92096 San Marcos CA USA
| |
Collapse
|
25
|
Tang L, Liu ZY, She W, Feng C. Selective single C-F bond arylation of trifluoromethylalkene derivatives. Chem Sci 2019; 10:8701-8705. [PMID: 31803445 PMCID: PMC6849639 DOI: 10.1039/c9sc01966a] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 08/04/2019] [Indexed: 12/24/2022] Open
Abstract
Through an SN2′ amination, N-alkylation and palladium-catalyzed allylic substitution sequence, we realized ipso-C–F bond arylation/alkenylation of trifluoromethylalkene derivatives.
A strategically novel single C–F bond functionalization of CF3-derived molecules, which shows a prominent advantage for the expedient construction of difluoromethylene-bridged organic scaffolds, is disclosed. The reported protocol consists of SN2′ amination, N-alkylation and palladium-catalyzed allylic substitution reactions, which enables straightforward arylation and alkenylation of vinyltrifluoromethane derivatives. Furthermore, this strategy is characterized by its broad substrate scope with respect to both CF3-alkene and arylboronic acid derivatives.
Collapse
Affiliation(s)
- Luning Tang
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| | - Ze-Yao Liu
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| | - Wenzhi She
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| | - Chao Feng
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| |
Collapse
|
26
|
Kaiser RP, Caivano I, Kotora M. Transition-metal-catalyzed methods for synthesis of fluorenes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
27
|
|
28
|
Ghisi R, Vamerali T, Manzetti S. Accumulation of perfluorinated alkyl substances (PFAS) in agricultural plants: A review. ENVIRONMENTAL RESEARCH 2019; 169:326-341. [PMID: 30502744 DOI: 10.1016/j.envres.2018.10.023] [Citation(s) in RCA: 304] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 10/12/2018] [Accepted: 10/19/2018] [Indexed: 05/27/2023]
Abstract
PFASs are a class of compounds that include perfluoroalkyl and polyfluoroalkyl substances, some of the most persistent pollutants still allowed - or only partially restricted - in several product fabrications and industrial applications worldwide. PFASs have been shown to interact with blood proteins and are suspected of causing a number of pathological responses, including cancer. Given this threat to living organisms, we carried out a broad review of possible sources of PFASs and their potential accumulation in agricultural plants, from where they can transfer to humans through the food chain. Analysis of the literature indicates a direct correlation between PFAS concentrations in soil and bioaccumulation in plants. Furthermore, plant uptake largely changes with chain length, functional group, plant species and organ. Low accumulations of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) have been found in peeled potatoes and cereal seeds, while short-chain compounds can accumulate at high levels in leafy vegetables and fruits. Significant variations in PFAS buildup in plants according to soil amendment are also found, suggesting a particular interaction with soil organic matter. Here, we identify a series of challenges that PFASs pose to the development of a safe agriculture for future generations.
Collapse
Affiliation(s)
- Rossella Ghisi
- Department of Agronomy, Food, Natural Resources, Animals and the Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020 Legnaro, Padua, Italy.
| | - Teofilo Vamerali
- Department of Agronomy, Food, Natural Resources, Animals and the Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020 Legnaro, Padua, Italy
| | - Sergio Manzetti
- Fjordforsk A/S, Institute for Science and Technology, Midtun 6894, Vangsnes, Norway; Uppsala Centre for Computational Sciences, Dept. of Cell & Molec. Biol., Uppsala University, Box 596, 75124 Uppsala, Sweden
| |
Collapse
|
29
|
Zeng H, Zhu C, Jiang H. Single C(sp3)–F Bond Activation in a CF3 Group: Ipso-Defluorooxylation of (Trifluoromethyl)alkenes with Oximes. Org Lett 2019; 21:1130-1133. [DOI: 10.1021/acs.orglett.9b00074] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| |
Collapse
|
30
|
Beaumier EP, Pearce AJ, See XY, Tonks IA. Modern applications of low-valent early transition metals in synthesis and catalysis. Nat Rev Chem 2019; 3:15-34. [PMID: 30989127 PMCID: PMC6462221 DOI: 10.1038/s41570-018-0059-x] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Low-valent early transition metals are often intrinsically highly reactive as a result of their strong propensity toward oxidation to more stable high-valent states. Harnessing these highly reducing complexes for productive reactivity is potentially powerful for C-C bond construction, organic reductions, small-molecule activation and many other reactions that offer orthogonal chemoselectivity and/or regioselectivity patterns to processes promoted by late transition metals. Recent years have seen many exciting new applications of low-valent metals through building new catalytic and/or multicomponent reaction manifolds out of classical reactivity patterns. In this Review, we survey new methods that employ early transition metals and invoke low-valent precursors or intermediates in order to identify common themes and strategies in synthesis and catalysis.
Collapse
Affiliation(s)
- Evan P. Beaumier
- Department of Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Adam J. Pearce
- Department of Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Xin Yi See
- Department of Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Ian A. Tonks
- Department of Chemistry, University of Minnesota, Minneapolis, MN, USA
| |
Collapse
|
31
|
Zhou Q, Fu Z, Yu L, Wang J. Transition‐Metal‐Free [4+1] Cycloaddition for the Synthesis of 1,2,3‐Triazole from α,α‐Difluoro‐
N
‐Tosylhydrazone and Amine through C‐F Bond Cleavage. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800514] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| | - Zihao Fu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| | - Lefei Yu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| |
Collapse
|
32
|
Wei F, Shen XQ, Zhang XH, Zhang XG. Copper-Catalyzed Defluorinative Thioannulation of Trifluoropropynes for the Synthesis of 1,2-Dithiole-3-thiones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800846] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Feng Wei
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| | - Xiao-Qin Shen
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| | - Xiao-Hong Zhang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| |
Collapse
|
33
|
Yan J, Shi K, Zhao C, Ding L, Jiang S, Yang L, Zhong G. NHC-catalyzed [4+2] cycloaddition reactions for the synthesis of 3′-spirocyclic oxindoles via a C–F bond cleavage protocol. Chem Commun (Camb) 2018; 54:1567-1570. [DOI: 10.1039/c7cc08048d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chiral NHC-catalyzed cycloaddition of γ-fluoroenals is developed. The nucleophilic γ-carbon generated via C–F bond cleavage undergoes highly enantioselective cycloaddition (up to >99% ee) to isatins and provides 3′-spirocyclic oxindoles in good yields (up to 91%).
Collapse
Affiliation(s)
- Jun Yan
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Kuangxi Shi
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Chengtao Zhao
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Liyuan Ding
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Shengsheng Jiang
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Limin Yang
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Guofu Zhong
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| |
Collapse
|
34
|
Abstract
A closer look is given to the successful approaches to the C(sp3)–F activation of benzylic, allylic, propargylic and allenylic fluorides.
Collapse
|
35
|
Xu L, Zhang Q, Xie Q, Huang B, Dai JJ, Xu J, Xu HJ. Pd-catalyzed defluorination/arylation of α-trifluoromethyl ketones via consecutive β-F elimination and C–F bond activation. Chem Commun (Camb) 2018; 54:4406-4409. [DOI: 10.1039/c8cc01568f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-catalyzed selective activation of a CF3 group by consecutive β-F elimination and C–F oxidative addition is reported herein.
Collapse
Affiliation(s)
- Lei Xu
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Qi Zhang
- Institute of Industry & Equipment Technology
- Hefei University of Technology Hefei
- P. R. China
| | - Qiang Xie
- PET-CT Center, The First Affiliated Hospital of USTC
- Hefei
- P. R. China
| | - Bei Huang
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Jian-Jun Dai
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Jun Xu
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Hua-Jian Xu
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| |
Collapse
|
36
|
Chen K, Berg N, Gschwind R, König B. Selective Single C(sp 3)-F Bond Cleavage in Trifluoromethylarenes: Merging Visible-Light Catalysis with Lewis Acid Activation. J Am Chem Soc 2017; 139:18444-18447. [PMID: 29182283 DOI: 10.1021/jacs.7b10755] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The conversion of easily available trifluoromethylarenes into aryldifluoromethyl compounds, which are valuable motifs in the pharmaceutical chemistry, is highly atom- and step-economical. However, the single C(sp3)-F bond cleavage of ArCF3 is a great challenge because of the chemical inertness of the C(sp3)-F bond and the difficult selectivity control of monodefluorination. We report here the first example of single C(sp3)-F functionalization of trifluoromethylarenes via visible-light catalysis merged with Lewis acid activation. The method allows good chemoselectivity control and shows good functional group tolerance. Mechanistic studies suggest an in situ-generated borenium cationic species as the key intermediate for C(sp3)-F bond cleavage in this reaction.
Collapse
Affiliation(s)
- Kang Chen
- Faculty of Chemistry and Pharmacy, University of Regensburg , 93040 Regensburg, Germany
| | - Nele Berg
- Faculty of Chemistry and Pharmacy, University of Regensburg , 93040 Regensburg, Germany
| | - Ruth Gschwind
- Faculty of Chemistry and Pharmacy, University of Regensburg , 93040 Regensburg, Germany
| | - Burkhard König
- Faculty of Chemistry and Pharmacy, University of Regensburg , 93040 Regensburg, Germany
| |
Collapse
|
37
|
Watanabe K, Satoh Y, Kamei M, Furukawa H, Fuji M, Obora Y. NbCl5/Zn/PCy3-System-Catalyzed Intramolecular [2 + 2 + 2] Cycloadditions of Diynes and Alkenes To Form Bicyclic Cyclohexadienes. Org Lett 2017; 19:5398-5401. [DOI: 10.1021/acs.orglett.7b02672] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keisuke Watanabe
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Satoh
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Motofumi Kamei
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Hirohisa Furukawa
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Maito Fuji
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Obora
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| |
Collapse
|
38
|
Munoz SB, Ni C, Zhang Z, Wang F, Shao N, Mathew T, Olah GA, Prakash GKS. Selective Late‐Stage Hydrodefluorination of Trifluoromethylarenes: A Facile Access to Difluoromethylarenes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700396] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Socrates B. Munoz
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Ling‐Ling Road 200032 Shanghai China
| | - Zhe Zhang
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| | - Fang Wang
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| | - Nan Shao
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| | - Thomas Mathew
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| | - George A. Olah
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| | - G. K. Surya Prakash
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park 90089‐1661 Los Angeles CA USA
| |
Collapse
|
39
|
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
| |
Collapse
|
40
|
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
| |
Collapse
|
41
|
Song P, Yu P, Lin JS, Li Y, Yang NY, Liu XY. Transition-Metal-Free β-C–H Bond Carbonylation of Enamides or Amides with a Trifluoromethyl Group as CO Surrogate for the Synthesis of 1,3-Oxazin-6-ones. Org Lett 2017; 19:1330-1333. [DOI: 10.1021/acs.orglett.7b00178] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ping Song
- Department
of Chemistry, Jinan University, Guangzhou, Guangdong 510632, P. R. China
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Peng Yu
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Jin-Shun Lin
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Yiqun Li
- Department
of Chemistry, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Ning-Yuan Yang
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Xin-Yuan Liu
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| |
Collapse
|
42
|
Sun N, Xie X, Wang G, Chen H, Liu Y. Base-Catalyzed Cyclization of 1,6-Diynyl Carboxylates Involving Propargyl-Allenyl Isomerization: Efficient Synthesis of Benzo[b]fluorene and Its Analogues. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601074] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ning Sun
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Xin Xie
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Gaonan Wang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Haoyi Chen
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| |
Collapse
|
43
|
Fujita T, Takazawa M, Sugiyama K, Suzuki N, Ichikawa J. Domino C-F Bond Activation of the CF 3 Group: Synthesis of Fluorinated Dibenzo[a,c][7]annulenes from 2-(Trifluoromethyl)-1-alkenes and 2,2'-Diceriobiaryls. Org Lett 2017; 19:588-591. [PMID: 28118013 DOI: 10.1021/acs.orglett.6b03743] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The construction of ring-fluorinated seven-membered carbocycles was readily achieved via the domino SN2'-type/SNV reaction between 2-(trifluoromethyl)-1-alkenes and 1,4-carbodianions. The SN2'-type reaction of 2-(trifluoromethyl)-1-alkenes with 2,2'-diceriobiaryls generated the intermediary 1,1-difluoro-1-alkenes bearing a monoceriobiaryl moiety, which in turn underwent intramolecular SNV reaction to afford fluorinated 5H-dibenzo[a,c][7]annulenes.
Collapse
Affiliation(s)
- Takeshi Fujita
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba , Tsukuba, Ibaraki 305-8571, Japan
| | - Marina Takazawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba , Tsukuba, Ibaraki 305-8571, Japan
| | - Kazuki Sugiyama
- 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
| |
Collapse
|
44
|
Zheng T, Li J, Zhang S, Xue B, Sun H, Li X, Fuhr O, Fenske D. Selective C–F and C–H Activation of Fluoroarenes by Fe(PMe3)4 and Catalytic Performance of Iron Hydride in Hydrosilylation of Carbonyl Compounds. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00546] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tingting Zheng
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
- Department
of Chemistry, Capital Normal University, 100037 Beijing, People’s Republic of China
| | - Junye Li
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
- Department
of Pharmaceutical Engineering, Heze University, DaXue Road, 274015 Heze, People’s Republic of China
| | - Shumiao Zhang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
- School
of Chemistry and Chemical Engineering, Qufu Normal University, 273165 Qufu, People’s Republic of China
| | - Benjing Xue
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Hongjian Sun
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Xiaoyan Li
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Olaf Fuhr
- Institut
für Nanotechnologie (INT) und Karlsruher Nano-Micro-Facility
(KNMF), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz
1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Dieter Fenske
- Institut
für Nanotechnologie (INT) und Karlsruher Nano-Micro-Facility
(KNMF), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz
1, 76344 Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
45
|
Kamei M, Watanabe K, Fuji M, Obora Y. Selective Intermolecular [2+2+2] Cycloaddition of Terminal Alkynes and Alkenes by NbCl5as a Catalyst Precursor. CHEM LETT 2016. [DOI: 10.1246/cl.160481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
46
|
Yoshida S, Shimomori K, Kim Y, Hosoya T. Single C−F Bond Cleavage of Trifluoromethylarenes with an ortho
-Silyl Group. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604776] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Suguru Yoshida
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Ken Shimomori
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Youngchan Kim
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| |
Collapse
|
47
|
Yoshida S, Shimomori K, Kim Y, Hosoya T. Single C−F Bond Cleavage of Trifluoromethylarenes with an ortho
-Silyl Group. Angew Chem Int Ed Engl 2016; 55:10406-9. [DOI: 10.1002/anie.201604776] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Suguru Yoshida
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Ken Shimomori
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Youngchan Kim
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience; Institute of Biomaterials and Bioengineering; Tokyo Medical and Dental University; 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| |
Collapse
|
48
|
Franzmann P, Trosien S, Schubert M, Waldvogel SR. Modular Approach to 9-Monosubstituted Fluorene Derivatives Using MoV Reagents. Org Lett 2016; 18:1182-5. [DOI: 10.1021/acs.orglett.6b00315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Peter Franzmann
- Johannes Gutenberg-University
Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Simon Trosien
- Johannes Gutenberg-University
Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Moritz Schubert
- Johannes Gutenberg-University
Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Siegfried R. Waldvogel
- Johannes Gutenberg-University
Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany
| |
Collapse
|
49
|
Chu XQ, Liu D, Xing ZH, Xu XP, Ji SJ. Palladium-Catalyzed Cyclization of Alkenes with Organohalides. Org Lett 2016; 18:776-9. [DOI: 10.1021/acs.orglett.6b00035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue-Qiang Chu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Dan Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zhen-Hua Xing
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Xiao-Ping Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| |
Collapse
|
50
|
Papaianina O, Amsharov KY. Aluminum oxide mediated C–F bond activation in trifluoromethylated arenes. Chem Commun (Camb) 2016; 52:1505-8. [DOI: 10.1039/c5cc08747c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermally activated γ-aluminium oxide was found to be very effective for C–F bond activation in trifluoromethylated arenes.
Collapse
Affiliation(s)
- O. Papaianina
- Institute of Organic Chemistry II
- University Erlangen-Nuernberg
- 91054 Erlangen
- Germany
| | - K. Yu. Amsharov
- Institute of Organic Chemistry II
- University Erlangen-Nuernberg
- 91054 Erlangen
- Germany
| |
Collapse
|