1
|
Hemamalini V, Shanthi M, Shankar B, Dandela R, Perumal K, Ramesh S. Visible-light promoted oxidative annulation of 2-naphthols with phenylglyoxal monohydrates toward hydroxy-naphthofuranone and its derivatives. Org Biomol Chem 2024; 22:5314-5324. [PMID: 38869030 DOI: 10.1039/d4ob00693c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
A highly efficient and innovative method involving base-mediated oxidative annulation between 2-naphthols and phenylglyoxal monohydrate under visible light irradiation has been successfully developed. This method leads to the formation of oxygen-containing heterocyclic compounds, particularly hydroxy-naphthofuranone derivatives, encompassing a unique quaternary carbon center. An X-ray diffraction study has unambiguously confirmed the structure of one such derivative. In particular, water molecules in this reaction serve various functions as a solvent, reagent, and additive, with the conversion of the process found to be influenced by the volume of water present. This atom-economical approach demonstrates tolerance for different substituents in both phenylglyoxal monohydrate and 2-naphthol, enabling the synthesis of a variety of naphthofuranones in satisfactory to good yields. The formation of a naphthofuranium cationic intermediate under acidic circumstances enables the formation of C-C or C-O bonds with a wide range of aromatic or alcoholic nucleophilic partners. Furthermore, the identification and generation of pinacol-type starting precursors from these naphthofuranone derivatives enable the synthesis of highly regioselective naphthofuran derivatives.
Collapse
Affiliation(s)
- Vijayakumar Hemamalini
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India.
| | - Markabandhu Shanthi
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India.
| | - Bhaskaran Shankar
- Department of Chemistry, Thiagarajar College of Engineering, Madurai 625 015, Tamil Nadu, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantapuri, Bhubaneswar, Odisha 751013, India
| | - Karuppaiah Perumal
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India.
| | - Subburethinam Ramesh
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India.
| |
Collapse
|
2
|
Gu C, So CM. Regio- and Chemoselective Palladium-Catalyzed Additive-Free Direct C─H Functionalization of Heterocycles with Chloroaryl Triflates Using Pyrazole-Alkyl Phosphine Ligands. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309192. [PMID: 38482750 DOI: 10.1002/advs.202309192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/26/2024] [Indexed: 06/06/2024]
Abstract
A series of new pyrazole-alkyl phosphine ligands with varying cycloalkyl ring sizes that enable additive-free regio- and chemoselective C─H arylation of heterocycles are reported. Excellent α/β selectivity of various heterocycles such as benzo[b]thiophene, thiophene, furan, benzofuran, and thiazole can be achieved using these ligands, along with excellent chemoselectivity of C─Cl over C─OTf of chloroaryl triflates. Mechanistic studies supported by both experimental findings and density functional theory calculations indicate that the pyrazole phosphine ligands with optimal ring sizes allow the reaction to proceed with a lower energy barrier via a concerted metalation-deprotonation pathway.
Collapse
Affiliation(s)
- Changxue Gu
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
| | - Chau Ming So
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518000, P. R. China
| |
Collapse
|
3
|
Yao J, Shao L, Kang X, Zhu M, Huo X, Wang X. Direct α-Arylation of Benzo[ b]furans Catalyzed by a Pd 3 Cluster. J Org Chem 2024; 89:1719-1726. [PMID: 38204281 DOI: 10.1021/acs.joc.3c02428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
As an interim paradigm for the catalysts between those based on more conventional mononuclear molecular Pd complexes and Pdn nanoparticles widely used in organic synthesis, polynuclear palladium clusters have attracted great attention for their unique reactivity and electronic properties. However, the development of Pd cluster catalysts for organic transformations and mechanistic investigations is still largely unexploited. Herein, we disclose the use of trinuclear palladium (Pd3Cl) species as an active catalyst for the direct C-H α-arylation of benzo[b]furans with aryl iodides to afford 2-arylbenzofurans in good yields under mild conditions. With this method, broad substrate adaptability was observed, and several drug intermediates were synthesized in high yields. Mechanistic studies indicated that the Pd3 core most likely remained intact throughout the reaction course.
Collapse
Affiliation(s)
- Jian Yao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Lili Shao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xi Kang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Manzhou Zhu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Xiaohong Huo
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| |
Collapse
|
4
|
He L, Xu Y. Palladium‐Catalyzed Alkenyl C−H Bonds Benzoxylation of Benzofurans by Perester. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Li He
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Yongjun Xu
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| |
Collapse
|
5
|
Rossi R, Ciofalo M. Palladium-Catalysed Intermolecular Direct C–H Bond Arylation of Heteroarenes with Reagents Alternative to Aryl Halides: Current State of the Art. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220201124008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Abstract: This unprecedented review with 322 references provides a critical up-to-date picture of the Pd-catalysed intermolecular direct C–H bond arylation of heteroarenes with arylating reagents alternative to aryl halides that include aryl sulfonates (aryl triflates, tosylates, mesylates, and imidazole-1-sulfonates), diaryliodonium salts, [(diacetoxy)iodo]arenes, arenediazonium salts, 1-aryltriazenes, arylhydrazines and N’-arylhydrazides, arenesulfonyl chlorides, sodium arenesulfinates, arenesulfinic acids, and arenesulfonohydrazides. Particular attention has been paid to summarise the preparation of the various arylating reagents and to highlight the practicality, versatility, and limitations of the various developed arylation protocols, also comparing their results with those achieved in analogous Pd-catalysed arylation reactions involving the use of aryl halides as electrophiles. Mechanistic proposals have also been briefly summarised and discussed. However, data concerning Pd-catalysed direct C–H bond arylations involving the C–H bonds of aryl substituents of the examined heteroarene derivatives have not been taken into account.
Collapse
Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Maurizio Ciofalo
- Dipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo, Viale delle Scienze, Edificio 4, I-90128, Palermo, Italy
| |
Collapse
|
6
|
Walsh PJ, Gao F, Du Y, Huang L, Wang N, Li X, Zhou XL, Zhang L, Huang S. Rhodium–Catalyzed Direct Arylation of Furopyridine: Synthesis and the Cardiac Effects of Dictamnine Derivatives. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Feng Gao
- Southwest Jiaotong University CHINA
| | | | | | | | | | | | | | | |
Collapse
|
7
|
Abstract
A robust method of room temperature direct arylation for benzofuran is reported. This discovery allows for mild arylation by commercially available aryl iodides with complete C-2 regioselectivity and tolerates a range of functional groups, including heat sensitive groups. Mechanistically, a Heck-type oxyarylation product from a direct arylation process is reported as a key piece of evidence for a carbopalladation intermediate.
Collapse
Affiliation(s)
- Amy L Mayhugh
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Christine K Luscombe
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.,Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, United States
| |
Collapse
|
8
|
Synthesis of [PdBr2(benzimidazole-2-ylidene)(pyridine)] complexes and their catalytic activity in the direct C H bond activation of 2-substituted heterocycles. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
9
|
Kitamura Y, Murata Y, Iwai M, Matsumura M, Yasuike S. Palladium-Catalyzed C-H Arylation of Benzofurans with Triarylantimony Difluorides for the Synthesis of 2-Arylbenzofurans. Molecules 2020; 26:E97. [PMID: 33379315 PMCID: PMC7795347 DOI: 10.3390/molecules26010097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/23/2020] [Accepted: 12/25/2020] [Indexed: 11/23/2022] Open
Abstract
Pd-catalyzed regioselective C-H arylation is a useful tool for the chemical modification of aromatic heterocycles and 2-arylbenzofuran derivatives are of interest as biologically active substances. Herein, the reaction of triarylantimony difluorides with benzofurans under aerobic conditions in 1,2-DCE, using 5 mol% Pd (OAc)2 and 2 eq. of CuCl2 at 80 °C, produced a variety of 2-arylbenzofurans in moderate-to-high yields. The reaction is sensitive to the electronic nature of the substituents on the benzene ring of the triarylantimony difluorides: an electron-donating group showed higher reactivity than an electron-withdrawing group. Single crystal X-ray analysis of tri(p-methylphenyl) antimony difluoride revealed that the central antimony atom exhibits trigonal bipyramidal geometry.
Collapse
Affiliation(s)
| | | | | | | | - Shuji Yasuike
- School of Pharmaceutical Sciences, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan; (Y.K.); (Y.M.); (M.I.); (M.M.)
| |
Collapse
|
10
|
Cardoza S, Shrivash MK, Das P, Tandon V. Strategic Advances in Sequential C-Arylations of Heteroarenes. J Org Chem 2020; 86:1330-1356. [PMID: 33356264 DOI: 10.1021/acs.joc.0c02151] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sequence-specific C-arylation strategies have important applications in medicinal and material research. These strategies allow C-C bond formations in a regioselective manner to synthesize large molecular libraries for studying structure-activity profiles. The past decade has seen the development of single C-C bond forming reactions using various transition-metal catalysts, cryogenic metalation strategies, and metal-free methods. Sequential arylations of heterocycles allow for the formation of multiaryl derivatives and are a preferred choice over de novo synthetic routes. This perspective sheds light on recent strategic advances to develop various sequential synthetic routes for the multiarylation of heteroarenes. This perspective addresses many challenges in optimizing sequential routes with respect to catalysts, reaction parameters, and various strategies adopted to obtain diversely arylated products.
Collapse
Affiliation(s)
- Savio Cardoza
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Manoj Kumar Shrivash
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India.,Department of Applied Sciences, Indian Institute of Information Technology, Allahabad 211012, India
| | - Parthasarathi Das
- Department of Chemistry, Indian Institute of Technology (ISM), Dhanbad 826004, India
| | - Vibha Tandon
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| |
Collapse
|
11
|
Dao-Huy T, Latkolik S, Bräuer J, Pfeil A, Stuppner H, Schnürch M, Dirsch VM, Mihovilovic MD. Structural Features Defining NF-κB Inhibition by Lignan-Inspired Benzofurans and Benzothiophenes. Biomolecules 2020; 10:biom10081131. [PMID: 32751917 PMCID: PMC7463992 DOI: 10.3390/biom10081131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/24/2020] [Accepted: 07/26/2020] [Indexed: 12/19/2022] Open
Abstract
A series of 2-arylbenzofurans and 2-arylbenzothiophenes was synthesized carrying three different side chains in position five. The synthesized compounds were tested for NF-κB inhibition to establish a structure activity relationship. It was found that both, the side chain in position five and the substitution pattern of the aryl moiety in position two have a significant influence on the inhibitory activity.
Collapse
Affiliation(s)
- Toan Dao-Huy
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (T.D.-H.); (M.D.M.)
- Department of Pharmaceutical and Pesticide Technology, School of Chemical Engineering, Hanoi University of Science and Technology, Dai Co Viet 1, Hai Ba Trung dist., Hanoi 10000, Vietnam
| | - Simone Latkolik
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
| | - Julia Bräuer
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
| | - Andreas Pfeil
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria;
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (T.D.-H.); (M.D.M.)
- Correspondence: (M.S.); (V.M.D.)
| | - Verena M. Dirsch
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
- Correspondence: (M.S.); (V.M.D.)
| | - Marko D. Mihovilovic
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (T.D.-H.); (M.D.M.)
| |
Collapse
|
12
|
Baenziger M, Baierl M, Devanathan K, Eswaran S, Fu P, Gschwend B, Haller M, Kasinathan G, Kovacic N, Langlois A, Li Y, Schuerch F, Shen X, Wan Y, Wickendick R, Xie S, Zhang K. Synthesis Development of the Selective Estrogen Receptor Degrader (SERD) LSZ102 from a Suzuki Coupling to a C–H Activation Strategy. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Markus Baenziger
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Marcel Baierl
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | | | - Sumesh Eswaran
- Anthem Biosciences Private Ltd., 49 Canara Bank Road, Bommasandra 560099, Karnataka, India
| | - Peng Fu
- Chemical & Analytical Development, Suzhou Novartis Technical Development Co. Ltd., 18-1 Tonglian Road, Bixi Subdistrict, Changshu 215537, Jiangsu, China
| | - Bjoern Gschwend
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Michael Haller
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Gopu Kasinathan
- Anthem Biosciences Private Ltd., 49 Canara Bank Road, Bommasandra 560099, Karnataka, India
| | - Nikola Kovacic
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Audrey Langlois
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Yongfeng Li
- Lianhe Chemical Technology Co. Ltd., 8 Yongjiao Road, Jiangkou Economic Zone, Huangyan, Taizhou 318020, Zhejiang, China
| | - Friedrich Schuerch
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Xiaodong Shen
- Chemical & Analytical Development, Suzhou Novartis Technical Development Co. Ltd., 18-1 Tonglian Road, Bixi Subdistrict, Changshu 215537, Jiangsu, China
| | - Yinbo Wan
- Chemical & Analytical Development, Suzhou Novartis Technical Development Co. Ltd., 18-1 Tonglian Road, Bixi Subdistrict, Changshu 215537, Jiangsu, China
| | - Regina Wickendick
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Siwei Xie
- Lianhe Chemical Technology Co. Ltd., 8 Yongjiao Road, Jiangkou Economic Zone, Huangyan, Taizhou 318020, Zhejiang, China
| | - Kai Zhang
- Lianhe Chemical Technology Co. Ltd., 8 Yongjiao Road, Jiangkou Economic Zone, Huangyan, Taizhou 318020, Zhejiang, China
| |
Collapse
|
13
|
Oschmann M, Johansson Holm L, Pourghasemi-Lati M, Verho O. Synthesis of Elaborate Benzofuran-2-carboxamide Derivatives through a Combination of 8-Aminoquinoline Directed C-H Arylation and Transamidation Chemistry. Molecules 2020; 25:E361. [PMID: 31952313 PMCID: PMC7024369 DOI: 10.3390/molecules25020361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/20/2022] Open
Abstract
Herein, we present a short and highly modular synthetic route that involves 8-aminoquinoline directed C-H arylation and transamidation chemistry, and which enables access to a wide range of elaborate benzofuran-2-carboxamides. For the directed C-H arylation reactions, Pd catalysis was used to install a wide range of aryl and heteroaryl substituents at the C3 position of the benzofuran scaffold in high efficiency. Directing group cleavage and further diversification of the C3-arylated benzofuran products were then achieved in a single synthetic operation through the utilization of a one-pot, two-step transamidation procedure, which proceeded via the intermediate N-acyl-Boc-carbamates. Given the high efficiency and modularity of this synthetic strategy, it constitutes a very attractive method for generating structurally diverse collections of benzofuran derivatives for small molecule screening campaigns.
Collapse
Affiliation(s)
| | | | | | - Oscar Verho
- Arrhenius Laboratory, Department of Organic Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; (M.O.); (L.J.H.); (M.P.-L.)
| |
Collapse
|
14
|
Saxena P, Maida N, Kapur M. Dioxazolones as masked ester surrogates in the Pd(ii)-catalyzed direct C-H arylation of 6,5-fused heterocycles. Chem Commun (Camb) 2019; 55:11187-11190. [PMID: 31465039 DOI: 10.1039/c9cc05563k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A simple and effective Pd(ii)-catalyzed regioselective C(2)-H arylation of 6,5-fused heterocycles with dioxazolones as a masked ester surrogate under mild conditions is reported. The significance of the arylation is highlighted by the new reactivity demonstrated in dioxazolones via proximal C-H activation of the cyclic carbonate of the hydroxamic acid functionality under protic conditions.
Collapse
Affiliation(s)
- Paridhi Saxena
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal Bypass Road, Bhopal 462066, MP, India.
| | | | | |
Collapse
|
15
|
Synthesis of benzofurans from terminal alkynes and iodophenols catalyzed by recyclable palladium nanoparticles supported on N,O-dual doped hierarchical porous carbon under copper- and ligand-free conditions. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.04.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
16
|
Singh C, Prakasham AP, Gangwar MK, Ghosh P. Binuclear Fused 5-membered Palladacycle and Palladium Complex of Amido-Functionalized N-heterocyclic Carbene Precatalysts for the One-Pot Tandem Hiyama Alkynylation/Cyclization Reactions. ChemistrySelect 2018. [DOI: 10.1002/slct.201801667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chandan Singh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - A. P. Prakasham
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Manoj Kumar Gangwar
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Prasenjit Ghosh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| |
Collapse
|
17
|
Colletto C, Panigrahi A, Fernández-Casado J, Larrosa I. Ag(I)-C-H Activation Enables Near-Room-Temperature Direct α-Arylation of Benzo[ b]thiophenes. J Am Chem Soc 2018; 140:9638-9643. [PMID: 29983049 PMCID: PMC6370252 DOI: 10.1021/jacs.8b05361] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
![]()
The
first example of near-room-temperature α-arylation of
benzo[b]thiophenes is reported. The discovery rests
on the observation of a switch in α-/β-regioselectivity
at different loadings of Pd2(dba)3·CHCl3 in the coupling between benzo[b]thiophene
and 4-iodotoluene. We show that this unprecedented regioselectivity
switch is driven by a Ag(I)-mediated C–H activation at the
α-C–H position, which becomes the dominant mode of reactivity
at low concentrations of Pd. Competition experiments, kinetic studies,
KIE, and D/H scrambling experiments have been carried out supporting
this mechanism.
Collapse
Affiliation(s)
- Chiara Colletto
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | - Adyasha Panigrahi
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | | | - Igor Larrosa
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| |
Collapse
|
18
|
Singh G, Goswami P, Sharma S, Anand RV. A One-Pot Approach to 2,3-Diarylbenzo[b]furans through N-Heterocyclic Carbene-Catalyzed 1,6-Conjugate Addition Followed by Acid Mediated Dehydrative Annulation. J Org Chem 2018; 83:10546-10554. [DOI: 10.1021/acs.joc.8b01358] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gurdeep Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Prithwish Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Sonam Sharma
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| |
Collapse
|
19
|
Kesharwani T, Kornman C, Tonnaer A, Hayes A, Kim S, Dahal N, Romero R, Royappa A. Sodium halides as the source of electrophilic halogens in green synthesis of 3-halo- and 3, n-dihalobenzo[ b]thiophenes. Tetrahedron 2018; 74:2973-2984. [PMID: 30886445 PMCID: PMC6420224 DOI: 10.1016/j.tet.2018.04.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A convenient methodology for the synthesis of mono- and di-halogenated benzo[b]thiophenes is described herein, which utilizes copper(II) sulfate pentahydrate and various sodium halides in the presence of substituted 2-alkynylthioanisoles. The proposed method is facile, uses ethanol as a green solvent, and results in uniquely substituted benzo[b]thiophene structures with isolated yields up to 96%. The most useful component of this methodology is the selective introduction of bromine atoms at every available position (2-7) around the benzo[b]thiophene ring, while keeping position 3 occupied by a specific halogen atom such as Cl, Br or I. Aromatic halogens are useful reactive handles; therefore, the selective introduction of halogens at specific positions would be valuable in the targeted synthesis of bioactive molecules and complex organic materials via metal-catalyzed cross coupling reactions. This work is a novel approach towards the synthesis of dihalo substituted benzo[b]thiophene core structures, which provides a superior alternative to the current methods discussed herein.
Collapse
Affiliation(s)
- Tanay Kesharwani
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Cory Kornman
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Amanda Tonnaer
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Amanda Hayes
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Seoyoung Kim
- Department of Chemistry, Bard College, Annandale-on-Hudson, NY 32514 USA
| | - Nikesh Dahal
- Department of Chemistry, Bard College, Annandale-on-Hudson, NY 32514 USA
| | - Ralf Romero
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Andrew Royappa
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| |
Collapse
|
20
|
|
21
|
Singh C, Prakasham AP, Gangwar MK, Butcher RJ, Ghosh P. One-Pot Tandem Hiyama Alkynylation/Cyclizations by Palladium(II) Acyclic Diaminocarbene (ADC) Complexes Yielding Biologically Relevant Benzofuran Scaffolds. ACS OMEGA 2018; 3:1740-1756. [PMID: 31458491 PMCID: PMC6641338 DOI: 10.1021/acsomega.7b01974] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/23/2018] [Indexed: 06/10/2023]
Abstract
A series of palladium acyclic diaminocarbene (ADC) complexes of the type cis-[(R1NH)(R2)methylidene]PdCl2(CNR1) [R1 = 2,4,6-(CH3)3C6H2: R2 = NC5H10 (2); NC4H8 (3); NC4H8O (4)] were used not only to perform the Csp2 -Csp Hiyama coupling between aryl iodide and triethoxysilylalkynes but also to subsequently carry out the one-pot tandem Hiyama alkynylation/cyclization reaction between 2-iodophenol and triethoxysilylalkynes, giving a convenient time-efficient access to the biologically relevant benzofuran compounds. The palladium ADC complexes (2-4) were conveniently synthesized by the nucleophilic addition of secondary amines, namely, piperidine, pyrrolidine, and morpholine on the cis-{(2,4,6-(CH3)3C6H2)NC}2PdCl2 in moderate yields (ca. 61-66%).
Collapse
Affiliation(s)
- Chandan Singh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - A. P. Prakasham
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Manoj Kumar Gangwar
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Raymond J. Butcher
- Department
of Chemistry, Howard University, Washington DC 20059, United States
| | - Prasenjit Ghosh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| |
Collapse
|
22
|
Wang Y, Yang Y, Jie K, Huang L, Guo S, Cai H. Copper-Catalyzed C2 and C3 Phosphonation of Benzofuran and Benzothiophene with Trialkyl Phosphites. ChemCatChem 2018. [DOI: 10.1002/cctc.201701361] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yufeng Wang
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Yajie Yang
- The First Clinical Medical College; Nanchang University; Nanchang 330031 P.R. China
| | - Kun Jie
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Ling Huang
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Shengmei Guo
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Hu Cai
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| |
Collapse
|
23
|
|
24
|
Kalari S, Babar DA, Karale UB, Makane VB, Rode HB. On water direct arylation of imidazo[1,2- a ]pyridines with aryl halides. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
25
|
He GX, Yuan JM, Zhu HM, Wei K, Wang LY, Kong SL, Mo DL, Pan CX, Su GF. Synthesis and antitumor evaluation of 2,3-diarylbenzofuran derivatives on HeLa cells. Bioorg Med Chem Lett 2017; 27:1660-1664. [DOI: 10.1016/j.bmcl.2017.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/19/2017] [Accepted: 03/06/2017] [Indexed: 01/03/2023]
|
26
|
N-Heterocyclic carbene-Pd(II)-1-methylimidazole complex catalyzed C H bond arylation of (benzo)thiophenes with aryl chlorides. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
27
|
Vo DD, Elofsson M. Total Synthesis of Viniferifuran, Resveratrol-Piceatannol Hybrid, Anigopreissin A and Analogues - Investigation of Demethylation Strategies. Adv Synth Catal 2016; 358:4085-4092. [PMID: 28701908 PMCID: PMC5484382 DOI: 10.1002/adsc.201601089] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Indexed: 12/11/2022]
Abstract
Resveratrol-based natural products constitute a valuable source of unique compounds with diverse biological activities. In this report we investigate demethylation strategies to minimize formation of cyclized and dimerized products during the synthesis of viniferifuran and analogues. We found that boron trichloride/tetra-n-butylammonium iodide (BCl3/TBAI) is typically more effective than boron tribromide (BBr3). Based on these findings we carried out the first syntheses of dehydro-δ-viniferin, resveratrol-piceatannol hybrid and anigopreissin A. In addition, we have developed a short and efficient route to viniferifuran that was obtained in 13% yield over six steps.
Collapse
Affiliation(s)
- Duc Duy Vo
- Department of ChemistryUmeå UniversitySE90187UmeåSweden
| | | |
Collapse
|
28
|
Concise Synthesis of Dithiophene Derivatives by a Palladium- Catalyzed Multiple C-S Cross Coupling/Cyclization Sequence. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600802] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
29
|
Yiğit M, Yiğit B, Gök Y. Synthesis of novel palladium(II) N-heterocyclic carbene complexes and their catalytic activities in the direct C5 arylation reactions. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.07.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
30
|
Waltenberger B, Atanasov AG, Heiss EH, Bernhard D, Rollinger JM, Breuss JM, Schuster D, Bauer R, Kopp B, Franz C, Bochkov V, Mihovilovic MD, Dirsch VM, Stuppner H. Drugs from nature targeting inflammation (DNTI): a successful Austrian interdisciplinary network project. MONATSHEFTE FUR CHEMIE 2016; 147:479-491. [PMID: 27069281 PMCID: PMC4785209 DOI: 10.1007/s00706-015-1653-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 12/29/2015] [Indexed: 12/14/2022]
Abstract
ABSTRACT Inflammation is part of numerous pathological conditions, which are lacking satisfying treatment and effective concepts of prevention. A national research network project, DNTI, involving scientists from six Austrian universities as well as several external partners aimed to identify and characterize natural products capable of combating inflammatory processes specifically in the cardiovascular system. The combined use of computational techniques with traditional knowledge, high-tech chemical analysis and synthesis, and a broad range of in vitro, cell-based, and in vivo pharmacological models led to the identification of a series of promising anti-inflammatory drug lead candidates. Mechanistic studies contributed to a better understanding of their mechanism of action and delivered new knowledge on the molecular level of inflammatory processes. Herein, the used approaches and selected highlights of the results of this interdisciplinary project are presented. GRAPHICAL ABSTRACT
Collapse
Affiliation(s)
- Birgit Waltenberger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | | | - Elke H Heiss
- Department of Pharmacognosy, University of Vienna, Vienna, Austria
| | - David Bernhard
- Cardiac Surgery Research Laboratory, Department of Cardiac Surgery, Innsbruck Medical University, Innsbruck, Austria
| | | | - Johannes M Breuss
- Department of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University Vienna, Vienna, Austria
| | - Daniela Schuster
- Institute of Pharmacy/Pharmaceutical Chemistry and CMBI, University of Innsbruck, Innsbruck, Austria
| | - Rudolf Bauer
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Graz, Austria
| | - Brigitte Kopp
- Department of Pharmacognosy, University of Vienna, Vienna, Austria
| | - Chlodwig Franz
- Institute for Applied Botany and Pharmacognosy, University of Veterinary Medicine, Vienna, Austria
| | - Valery Bochkov
- Institute of Pharmaceutical Sciences/Pharmaceutical Chemistry, University of Graz, Graz, Austria
| | | | - Verena M Dirsch
- Department of Pharmacognosy, University of Vienna, Vienna, Austria
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
31
|
Jia Y, Li T, Yu C, Jiang B, Yao C. A facile one-pot synthesis of 2,3-diarylated benzo[b]furans via relay NHC and palladium catalysis. Org Biomol Chem 2016; 14:1982-7. [PMID: 26754554 DOI: 10.1039/c5ob02336j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient one-pot synthesis of 2,3-diarylated benzo[b]furans was realized through the relay catalysis of N-Heterocyclic Carbene (NHC) and palladium from substituted 2'-bromodiphenylbromomethanes and aryl aldehydes. The easy availability of the starting materials, good compatibility of catalysts, convergent assembly and concomitant modification of the target scaffold, and potential utilization value of the products make this strategy attractive in organic synthesis.
Collapse
Affiliation(s)
- Yanyan Jia
- School of Chemistry and Chemical Engineering, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| | - Tuanjie Li
- School of Chemistry and Chemical Engineering, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| | - Chenxia Yu
- School of Chemistry and Chemical Engineering, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| | - Bo Jiang
- School of Chemistry and Chemical Engineering, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| | - Changsheng Yao
- School of Chemistry and Chemical Engineering, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| |
Collapse
|
32
|
Colletto C, Islam S, Juliá-Hernández F, Larrosa I. Room-Temperature Direct β-Arylation of Thiophenes and Benzo[b]thiophenes and Kinetic Evidence for a Heck-type Pathway. J Am Chem Soc 2016; 138:1677-83. [PMID: 26788885 PMCID: PMC4774971 DOI: 10.1021/jacs.5b12242] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
![]()
The
first example of a regioselective β-arylation of benzo[b]thiophenes and thiophenes at room temperature with aryl
iodides as coupling partners is reported. This methodology stands
out for its operational simplicity: no prefunctionalization of either
starting material is required, the reaction is insensitive to air
and moisture, and it proceeds at room temperature. The mild conditions
afford wide functional group tolerance, often with complete regioselectivity
and high yields, resulting in a highly efficient catalytic system.
Initial mechanistic studies, including 13C and 2H KIEs, suggest that this process occurs via a concerted carbo-palladation
across the thiophene double bond, followed by a base-assisted anti-elimination.
Collapse
Affiliation(s)
- Chiara Colletto
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom.,School of Biological and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Saidul Islam
- School of Biological and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Francisco Juliá-Hernández
- School of Biological and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Igor Larrosa
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| |
Collapse
|
33
|
Bheeter CB, Chen L, Soulé JF, Doucet H. Regioselectivity in palladium-catalysed direct arylation of 5-membered ring heteroaromatics. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02095f] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the past few years, several results using modified catalysts and new reaction conditions have been reported permitting better control of the regioselectivity of Pd-catalysed arylations.
Collapse
Affiliation(s)
- Charles Beromeo Bheeter
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Lu Chen
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Jean-François Soulé
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Henri Doucet
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| |
Collapse
|
34
|
Karale UB, Kalari S, Shivakumar J, Makane VB, Babar DA, Thakare RP, Babu BN, Chopra S, Rode HB. Ligand-free Pd-catalysed decarboxylative arylation of imidazo[1,2-a]pyridine-3-carboxylic acids with aryl bromides. RSC Adv 2016. [DOI: 10.1039/c6ra12166g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile ligand-free method for Pd(OAc)2 catalysed decarboxylative arylation of imidazo[1,2-a]pyridine-3-carboxylic acids with hetero(aryl) bromides has been developed.
Collapse
Affiliation(s)
- Uttam B. Karale
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Saradhi Kalari
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Jala Shivakumar
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Hyderabad-500 037
- India
| | - Vitthal B. Makane
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Dattatraya A. Babar
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Ritesh P. Thakare
- Microbiology Division
- Central Drug Research Institute
- Lucknow-226 031
- India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Hyderabad-500 037
- India
| | - Sidharth Chopra
- Microbiology Division
- Central Drug Research Institute
- Lucknow-226 031
- India
| | - Haridas B. Rode
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| |
Collapse
|
35
|
Rossi R, Lessi M, Manzini C, Marianetti G, Bellina F. Transition Metal-Free Direct CH (Hetero)arylation of Heteroarenes: A Sustainable Methodology to Access (Hetero)aryl-Substituted Heteroarenes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500799] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
36
|
Schnapperelle I, Breitenlechner S, Bach T. Kinetic Studies on the Palladium(II)-Catalyzed Oxidative Cross-Coupling of Thiophenes with Arylboron Compounds and Their Mechanistic Implications. Chemistry 2015; 21:18407-16. [DOI: 10.1002/chem.201503067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Indexed: 12/28/2022]
|
37
|
Yin SC, Zhou Q, Zhao XY, Shao LX. N-Heterocyclic Carbene-Palladium(II)-1-Methylimidazole Complex Catalyzed Direct C–H Bond Arylation of Benzo[b]furans with Aryl Chlorides. J Org Chem 2015; 80:8916-21. [PMID: 26272350 DOI: 10.1021/acs.joc.5b01544] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shun-Chao Yin
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| | - Quan Zhou
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| | - Xiao-Yun Zhao
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| | - Li-Xiong Shao
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| |
Collapse
|
38
|
Livi F, Gobalasingham NS, Bundgaard E, Thompson BC. Influence of functionality on direct arylation of model systems as a route toward fluorinated copolymers via direct arylation polymerization (DArP). ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27728] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Francesco Livi
- Department of Chemistry and Loker Hydrocarbon Research Institute; University of Southern California; Los Angeles California 90089-1661
- DTU Energy; Technical University of Denmark; Frederiksborgvej 399, 4000 Roskilde Denmark
| | - Nemal S. Gobalasingham
- Department of Chemistry and Loker Hydrocarbon Research Institute; University of Southern California; Los Angeles California 90089-1661
| | - Eva Bundgaard
- DTU Energy; Technical University of Denmark; Frederiksborgvej 399, 4000 Roskilde Denmark
| | - Barry C. Thompson
- Department of Chemistry and Loker Hydrocarbon Research Institute; University of Southern California; Los Angeles California 90089-1661
| |
Collapse
|
39
|
Cooper SP, Booker-Milburn KI. A Palladium(II)-Catalyzed CH Activation Cascade Sequence for Polyheterocycle Formation. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501037] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
40
|
Cooper SP, Booker-Milburn KI. A Palladium(II)-Catalyzed CH Activation Cascade Sequence for Polyheterocycle Formation. Angew Chem Int Ed Engl 2015; 54:6496-500. [DOI: 10.1002/anie.201501037] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 11/11/2022]
|
41
|
Khoobi M, Molaverdi F, Jafarpour F, Abbasnia M, Kubicki M, Shafiee A. A one-pot domino C–H, C–C activation in coumarins: a fast track to 2,3-diaryl benzo[b]furans. Chem Commun (Camb) 2015; 51:11713-6. [DOI: 10.1039/c5cc01427a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An approach to synthesize 2,3-diaryl benzo[b]furans using coumarins and aryl bromides is developed.
Collapse
Affiliation(s)
- Mehdi Khoobi
- Department of Medicinal Chemistry
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center
- Tehran University of Medical Sciences
- Tehran
- Iran
| | | | - Farnaz Jafarpour
- School of Chemistry
- College of Science
- University of Tehran
- Tehran
- Iran
| | | | - Maciej Kubicki
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - Abbas Shafiee
- Department of Medicinal Chemistry
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center
- Tehran University of Medical Sciences
- Tehran
- Iran
| |
Collapse
|