1
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Galla MS, Kale NB, Kumawat A, Bora D, Shankaraiah N. Rh(III)-catalysed C-H annulation of cis-stilbene acids with 2-diazo-1,3-diketones: facile access to 6,7-dihydrobenzofuran-4(5 H)-one and α-pyrone scaffolds. Org Biomol Chem 2024; 22:3933-3939. [PMID: 38666426 DOI: 10.1039/d4ob00151f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
An efficient Rh(III)-catalysed C-H functionalization, tandem annulation of cis-stilbene acids using 2-diazo-1,3-diketones was devised. This protocol solely afforded 6,7-dihydrobenzofuran-4(5H)-ones using alicyclic diazocarbonyls via decarbonylation and α-pyrones with aliphatic diazo compounds. The chameleonic nature of cis-stilbene acid was observed with various diazo compounds by altering the additives. This synthetic method furnished good atom-economy and wide functional group tolerance, and also explained the use of carboxylic acids as a directing group. In addition, a mechanistic investigation of the catalysed reaction using ESI-MS, and the fluorescence properties of α-pyrones were well explored.
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Affiliation(s)
- Mary Sravani Galla
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
| | - Nandini B Kale
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
| | - Akshay Kumawat
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
| | - Darshana Bora
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
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2
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Irfan A, Faisal S, Zahoor AF, Noreen R, Al-Hussain SA, Tuzun B, Javaid R, Elhenawy AA, Zaki MEA, Ahmad S, Abdellattif MH. In Silico Development of Novel Benzofuran-1,3,4-Oxadiazoles as Lead Inhibitors of M. tuberculosis Polyketide Synthase 13. Pharmaceuticals (Basel) 2023; 16:829. [PMID: 37375776 DOI: 10.3390/ph16060829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Benzofuran and 1,3,4-oxadiazole are privileged and versatile heterocyclic pharmacophores which display a broad spectrum of biological and pharmacological therapeutic potential against a wide variety of diseases. This article reports in silico CADD (computer-aided drug design) and molecular hybridization approaches for the evaluation of the chemotherapeutic efficacy of 16 S-linked N-phenyl acetamide moiety containing benzofuran-1,3,4-oxadiazole scaffolds BF1-BF16. This virtual screening was carried out to discover and assess the chemotherapeutic efficacy of BF1-BF16 structural motifs as Mycobacterium tuberculosis polyketide synthase 13 (Mtb Pks13) enzyme inhibitors. The CADD study results revealed that the benzofuran clubbed oxadiazole derivatives BF3, BF4, and BF8 showed excellent and remarkably significant binding energies against the Mtb Pks13 enzyme comparable with the standard benzofuran-based TAM-16 inhibitor. The best binding affinity scores were displayed by 1,3,4-oxadiazoles-based benzofuran scaffolds BF3 (-14.23 kcal/mol), BF4 (-14.82 kcal/mol), and BF8 (-14.11 kcal/mol), in comparison to the binding affinity score of the standard reference TAM-16 drug (-14.61 kcal/mol). 2,5-Dimethoxy moiety-based bromobenzofuran-oxadiazole derivative BF4 demonstrated the highest binding affinity score amongst the screened compounds, and was higher than the reference Pks13 inhibitor TAM-16 drug. The bindings of these three leads BF3, BF4, and BF8 were further confirmed by the MM-PBSA investigations in which they also exhibited strong bindings with the Pks13 of Mtb. Moreover, the stability analysis of these benzofuran-1,3,4-oxadiazoles in the active sites of the Pks13 enzyme was achieved through molecular dynamic (MD) simulations at 250 ns virtual simulation time, which indicated that these three in silico predicted bio-potent benzofuran tethered oxadiazole molecules BF3, BF4, and BF8 demonstrated stability with the active site of the Pks13 enzyme.
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Affiliation(s)
- Ali Irfan
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shah Faisal
- Department of Chemistry, Islamia College University Peshawar, Peshawar 25120, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Sami A Al-Hussain
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 13623, Saudi Arabia
| | - Burak Tuzun
- Plant and Animal Production Department, Technical Sciences Vocational School of Sivas, Sivas Cumhuriyet University, Sivas 58140, Turkey
| | - Rakshanda Javaid
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Ahmed A Elhenawy
- Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt
- Chemistry Department, Faculty of Science and Art, AlBaha University, Mukhwah, Al Bahah 65731, Saudi Arabia
| | - Magdi E A Zaki
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 13623, Saudi Arabia
| | - Sajjad Ahmad
- Department of Health and Biological Sciences, Abasyn University, Peshawar 25000, Pakistan
| | - Magda H Abdellattif
- Department of Chemistry, College of Science, Taif University, Taif 21944, Saudi Arabia
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3
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A Novel Method to Construct 2-Aminobenzofurans via [4 + 1] Cycloaddition Reaction of In Situ Generated Ortho-Quinone Methides with Isocyanides. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238538. [PMID: 36500630 PMCID: PMC9737762 DOI: 10.3390/molecules27238538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/09/2022]
Abstract
A new approach for the synthesis of 2-aminobenzofurans has been described via Sc(OTf)3 mediated formal cycloaddition of isocyanides with the in situ generated ortho-quinone methides (o-QMs) from o-hydroxybenzhydryl alcohol. Notably, as a class of readily available and highly active intermediates, o-QMs were first used in the construction of benzofurans. This [4 + 1] cycloaddition reaction provides a straightforward and efficient methodology for the construction of 2-aminobenzofurans scaffold in good yield (up to 93% yield) under mild conditions.
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4
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Wang H, Huang Y, Wu Q, Lu J, Xu YL, Chen YY. Visible-Light-Promoted bis(Difluoromethylation)/Cyclization of 2-Vinyloxy Arylalkynes to Prepare Benzofuran Derivatives. J Org Chem 2022; 87:13288-13299. [PMID: 36166821 DOI: 10.1021/acs.joc.2c01938] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A visible-light-promoted difluoromethylation/cyclization of 2-vinyloxy arylalkynes was developed, providing a variety of bis(difluoromethyl)-substituted benzofurans in moderate to good yields. A plausible mechanism involving difluoromethyl radical cascade cyclization and solvent-promoted ionic addition was proposed. This protocol has the advantages of having mild reaction conditions, simple operation, and good functional group tolerance.
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Affiliation(s)
- Huan Wang
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Yao Huang
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Qiaoyan Wu
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Jun Lu
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Yan-Li Xu
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Yan-Yan Chen
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
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5
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Direct Electrooxidative Selenylation/Cyclization of Alkynes: Access to Functionalized Benzo[b]furans. Molecules 2022; 27:molecules27196314. [PMID: 36234851 PMCID: PMC9572441 DOI: 10.3390/molecules27196314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/13/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
A mild, practical, metal and oxidant-free methodology for the synthesis of various C-3 selenylated benzo[b]furan derivatives was developed through the intramolecular cyclization of alkynes promoted with diselenides via electrooxidation. A wide range of selenium-substituted benzo[b]furan derivatives were obtained in good to excellent yields with high regioselectivity under constant current in an undivided cell equipped with carbon and platinum plates as the anode and cathode, respectively. Moreover, the convergent approach exhibited good functional group tolerance and could be easily scaled up with good efficiency, providing rapid access to a diverse range of selenylated benzo[b]furans derivatives from simple, readily available starting materials.
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6
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Chen D, Jones EV, Williams CW, Huynh TN, McPhail TC, France S. Intramolecular, Interrupted Homo‐Nazarov Cascade Biscyclizations to Angular (Hetero)Aryl‐Fused Polycycles. Chemistry 2022; 28:e202201368. [DOI: 10.1002/chem.202201368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Doris Chen
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Elizabeth V. Jones
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Corey W. Williams
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Tan‐Khang N. Huynh
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Tristan C. McPhail
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Stefan France
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta Georgia 30332 USA
- Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology Atlanta Georgia 30332 USA
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7
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Nayak S, Gaonkar SL, Hazra D, Chawla K, Hari G, Pai KSR, Guru BR, Hakimane SS. Synthesis, Molecular Docking and Evaluation of 1,3,4-Oxadiazole-Isobenzofuran Hybrids as Antimicrobial and Anticancer Agents. Chem Biodivers 2022; 19:e202100956. [PMID: 35304823 DOI: 10.1002/cbdv.202100956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 03/18/2022] [Indexed: 01/23/2023]
Abstract
In drug discovery, the hybridization of bioactive pharmacophores is a powerful tool for targeting enzymes involved in cancer and microbial cell growth. A combination of 1,3,4-oxadiazole and isobenzofuran may improve the antitumor and antimicrobial properties of the hybrid molecules. A series of hybrid molecules having 1,3,4-oxadiazole and isobenzofuran were synthesized and structural characterization was done by FT-IR, 1 H-NMR, 13 C-NMR, and mass spectrometry. Molecular docking studies were performed to investigate binding interactions of compounds with proteins (PDB NO: 2R3J and 1GII), and the results were consistent with in vitro anticancer data. All the synthesized compounds were tested for antimicrobial activity against S. aureus, E. faecalis (Gram-positive) and E. coli and P. aeruginosa (Gram-negative) bacterial strains. Among the synthesized compounds, 7a and 7b displayed good activity against the tested bacterial strains. Also, compounds were tested for their anti-tumor activity against breast cancer (MCF-7) and colon cancer (HCT-116) cell lines via SRB assay. In comparison to doxorubicin (1.14 μM), hybrids 7e (4.32 μM), 7f (4.15 μM), 7g (4.66 μM), and 7h (4.83 μM) demonstrated comparable IC50 value against the HCT 116 cell line.
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Affiliation(s)
- Swarnagowri Nayak
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Santosh L Gaonkar
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Druti Hazra
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Kiran Chawla
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Gangadhar Hari
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - K S R Pai
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Bharath Raja Guru
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Sushruta S Hakimane
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
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8
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Jajula K, Kumar RA, Kishore R, Thommandru PR, Shrikanth R, Satyanarayana S, Kishore PVVN. Silver( i)-catalyzed dehydrogenative cross-coupling of 2-aroylbenzofurans with phosphites. NEW J CHEM 2022. [DOI: 10.1039/d1nj06077e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The silver(i)-catalyzed dehydrogenative cross-coupling reaction of 2-aroylbenzofurans with phosphites to afford 2-aroyl-3-phosphonylbenzofurans is reported.
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Affiliation(s)
- Kashanna Jajula
- Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies-Basar, Nirmal-504107, India
| | - Rathod Aravind Kumar
- Semiochemical Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Ravada Kishore
- Department of Chemistry, GITAM Institute of Science, GITAM (Deemed to be University), Visakhapatnam 530045, India
| | - Prakash Raj Thommandru
- Department of Chemistry, GITAM Institute of Science, GITAM (Deemed to be University), Visakhapatnam 530045, India
| | - Ravula Shrikanth
- Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies-Basar, Nirmal-504107, India
- Department of Chemistry, Osmania University, Hyderabad 500007, India
| | | | - Pilli V. V. N. Kishore
- Chemistry Division, Department of Science and Humanities, VFSTR (Deemed to be University), Vadlamudi, Guntur-522213, India
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9
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Sun Q, Hu S, Song Y, Zhu R, Li L, Li J, Zhang T, Gao Q, Wang Y, Fang L. Total Synthesis, Discovery and Biological Evaluation of Daldinin A Derivatives for Improving Hyperglycemia-Induced Endothelial Cell Death. Chem Pharm Bull (Tokyo) 2021; 69:760-767. [PMID: 34334519 DOI: 10.1248/cpb.c21-00211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Daldinins are a novel type of naturally occurring tricyclic heterocycles isolated from Daldinia concentrica. In this study, four daldinin A derivatives with different alkyl side chains were synthesized using the same synthetic protocol. Bioactivity tests first indicated that the daldinin A derivatives showed significant protection for endothelial cells against damage caused by high glucose. The derivative compound with three carbon atoms on the alkyl side exhibited the best effect.
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Affiliation(s)
| | - Shuyu Hu
- School of Pharmacy, Xinxiang Medical University
| | - Yu Song
- School of Pharmacy, Xinxiang Medical University
| | - Runqing Zhu
- School of Pharmacy, Xinxiang Medical University
| | - Luohao Li
- School of Pharmacy, Xinxiang Medical University
| | - Jing Li
- School of Pharmacy, Xinxiang Medical University
| | - Tao Zhang
- School of Pharmacy, Xinxiang Medical University
| | - Qinghe Gao
- School of Pharmacy, Xinxiang Medical University
| | - Yakun Wang
- School of Pharmacy, Xinxiang Medical University
| | - Lizhen Fang
- School of Pharmacy, Xinxiang Medical University
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11
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12
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Liu J, Tian M, Li A, Ji L, Qiu D, Zhao X. Acid-promoted selective synthesis of trifluoromethylselenolated benzofurans with Se-(trifluoromethyl) 4-methylbenzenesulfonoselenoate. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152809] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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13
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Zhou J, Li T, Li M, Li C, Hu X, Jin L, Sun N, Hu B, Shen Z. FeCl
2
‐Catalyzed Direct C
2
‐Benzylation of Benzofurans with Diarylmethanes via Cross Dehydrogenative Coupling. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiacheng Zhou
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Tianci Li
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Meichao Li
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Chunmei Li
- College of Chemical Engineering Zhejiang University of Technology P. R. China
- School of Chemistry and Chemical Engineering Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process Shaoxing University P. R. China
| | - Xinquan Hu
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Liqun Jin
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Nan Sun
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Baoxiang Hu
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Zhenlu Shen
- College of Chemical Engineering Zhejiang University of Technology P. R. China
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14
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Nath A, Kumer A, Khan MW. Synthesis, computational and molecular docking study of some 2, 3-dihydrobenzofuran and its derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129225] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Lamaa D, Hauguel C, Lin HP, Messe E, Gandon V, Alami M, Hamze A. Sequential One-Pot Synthesis of 3-Arylbenzofurans from N-Tosylhydrazones and Bromophenol Derivatives. J Org Chem 2020; 85:13664-13673. [PMID: 33091298 DOI: 10.1021/acs.joc.0c01835] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A divergent and efficient one-pot sequence allowing direct access to 3-arylbenzofuran derivatives has been developed. The process, involving N-tosylhydrazones and bromophenols, proceeds via a palladium-catalyzed Barluenga-Valdés cross-coupling, followed by an aerobic, copper-catalyzed, radical cyclization to form Csp2-Csp2 and O-Csp2 bonds. 3-Arylated benzofurans bearing various substituents were obtained with good to excellent yields (up to 90%). Mechanistic investigation strongly supports a radical process for the cyclization step.
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Affiliation(s)
- Diana Lamaa
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France
| | - Camille Hauguel
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France
| | - Hsin-Ping Lin
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France
| | - Estelle Messe
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France
| | - Vincent Gandon
- Institut de Chimie Moleculaire et des Materiaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Batiment 420, 91405 Orsay Cedex, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128 Palaiseau Cedex, France
| | - Mouad Alami
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France
| | - Abdallah Hamze
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France
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16
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Okuda Y, Nagaoka M, Yamamoto T. Bulky
N
‐Heterocyclic‐Carbene‐Coordinated Palladium Catalysts for 1,2‐Addition of Arylboron Compounds to Carbonyl Compounds. ChemCatChem 2020. [DOI: 10.1002/cctc.202001464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuta Okuda
- Department of Materials Science and Engineering Graduate School of Engineering Tokyo Denki University Senju-Asahi-cho 5 Adachi-ku Tokyo 120-8551 Japan
| | - Masahiro Nagaoka
- Organometallic Chemistry Group Sagami Chemical Research Institute Hayakawa 2743-1 Ayase Kanagawa 252-1193 Japan
| | - Tetsuya Yamamoto
- Department of Materials Science and Engineering Graduate School of Engineering Tokyo Denki University Senju-Asahi-cho 5 Adachi-ku Tokyo 120-8551 Japan
- Department of Applied Chemistry School of Engineering Tokyo Denki University Senju-Asahi-cho 5 Adachi-ku Tokyo 120-8551 Japan
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17
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Li X, Xu Z, Wang L, Wang F, Yang J, Li P. A Facile Synthesis of Functionalized Benzofurans via Visible‐Light‐Induced Tandem Cyclization of 1,6‐Enynes with Disulfides. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xuezhi Li
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Zhaoliang Xu
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Lei Wang
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
| | - Fang Wang
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
| | - Jianguo Yang
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
| | - Pinhua Li
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
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18
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Guo T, Wang H, Cao C, Chen K, Liu Y, Zhang P, Zhao Y, Ma Y. Highly Efficient and Eco‐Benign Synthesis of 3‐Imidazoheterocyclic‐Substituted Phthalides/Isoindolinones in Water under Catalyst‐ and Additive‐Free Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tao Guo
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Hui‐Jie Wang
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Can‐Can Cao
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Kuo‐Hong Chen
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Yu Liu
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Pan‐Ke Zhang
- College of Chemistry, and Institute of Green Catalysis, Henan Institute of Advanced Technology Zhengzhou University 450001 Zhengzhou Henan P. R. China
| | - Yun‐Hui Zhao
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology 411201 Xiangtan Hunan P. R. China
| | - Yong‐Cheng Ma
- Pharmacy Department Fuwai Centeral China Cardiovascular Hospital No.1, Fuwai Road 451464 Zhengzhou Henan P. R. China
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19
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Singh M, Yadav VB, Danish Ansari M, Malviya M, Siddiqui IR. Green and Efficient Iron‐Catalysed Synthesis of Polyfunctionalized Benzofuran‐4(5H)‐one Derivatives via Cross‐Dehydrogenative Coupling. ChemistrySelect 2020. [DOI: 10.1002/slct.202001584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Vijay B. Yadav
- Laboratory of Green synthesisDepartment of Chemistry University of Allahabad 211001 India
| | - Mohd Danish Ansari
- Laboratory of Green synthesisDepartment of Chemistry University of Allahabad 211001 India
| | | | - I. R. Siddiqui
- Laboratory of Green synthesisDepartment of Chemistry University of Allahabad 211001 India
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20
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Aggarwal S, Srinivas D, Sreenivasulu C, Satyanarayana G. Nickel catalyzed intramolecular oxidative coupling: synthesis of 3-aryl benzofurans. RSC Adv 2020; 10:22264-22272. [PMID: 35516592 PMCID: PMC9054549 DOI: 10.1039/d0ra03071f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 05/27/2020] [Indexed: 11/21/2022] Open
Abstract
Recent research has been focused on the transition metal-catalyzed reactions. Herein we have developed nickel-catalyzed synthesis of 3-aryl benzofurans from ortho-alkenyl phenols via intramolecular dehydrogenative coupling. Notably, simple O2 gas served as an oxidant, without using any sacrificial hydrogen acceptor. The strategy enabled the synthesis of 3-aryl benzofurans in good to excellent yields.
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Affiliation(s)
- Sakshi Aggarwal
- Department of Chemistry, Indian Institute of Technology Kandi, Sangareddy Hyderabad 502 285 Telangana India +91 40 2301 6003/32 +91 40 2301 6033
| | - Dasari Srinivas
- Department of Chemistry, Indian Institute of Technology Kandi, Sangareddy Hyderabad 502 285 Telangana India +91 40 2301 6003/32 +91 40 2301 6033
| | - Chinnabattigalla Sreenivasulu
- Department of Chemistry, Indian Institute of Technology Kandi, Sangareddy Hyderabad 502 285 Telangana India +91 40 2301 6003/32 +91 40 2301 6033
| | - Gedu Satyanarayana
- Department of Chemistry, Indian Institute of Technology Kandi, Sangareddy Hyderabad 502 285 Telangana India +91 40 2301 6003/32 +91 40 2301 6033
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21
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Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
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Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
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22
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Abstract
:
The benzofuranyl motif present in compounds exhibits various medicinal properties and
non-drug applications. These derivatives are naturally occurring compounds or synthetic materials,
which cover a broad spectrum of pharmacological activities like anti-inflammatory, anti-diabetic, anti-
depressant, anti-HIV, anti-microbial, anti-proliferative, anti-convulsant, cytotoxic, analgesic, etc.
Few of the commercially interesting compounds from this class are, ailanthoidol (anti-inflammatory),
amiodarone, dronedarone, celivarone (anti-arrhythmic), bufuralol (muscular airways relaxant), morphine,
5-(2-aminopropyl)benzofuran; 5-APB, 6-(2-aminopropyl)benzofuran; 6-APB (CNS), rifampicin
(antibiotic), etc., whereas, some of the non-drug applications are in perfumery industry (bergapten)
and as tannin activators in sunscreen preparations (psoralen, 8-methoxypsoralen, and angelicin).
Considering these interesting biological activities and commercial utilities, a review on the synthetic
aspects of this privileged scaffold was attempted. For the benefit of natural product-based drug discovery,
available sources of these derivatives, extraction process and reported biological activities
have also been outlined in this review.
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Affiliation(s)
- Andiappan Lavanya
- Department of Training and Development, Orchid Pharma Ltd., 138-149, SIDCO Industrial Estate, Alathur, Chennai- 603 110, Tamil Nadu, India
| | - Kilambi Narasimhan
- Department of Training and Development, Orchid Pharma Ltd., 138-149, SIDCO Industrial Estate, Alathur, Chennai- 603 110, Tamil Nadu, India
| | - Vediappen Padmini
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
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23
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Henry MC, Sutherland A. Synthesis of Benzo[ b]furans by Intramolecular C-O Bond Formation Using Iron and Copper Catalysis. Org Lett 2020; 22:2766-2770. [PMID: 32186389 PMCID: PMC7146889 DOI: 10.1021/acs.orglett.0c00754] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Indexed: 01/08/2023]
Abstract
One-pot processes for the synthesis of benzo[b]furans from 1-aryl- or 1-alkylketones using nonprecious transition metal catalysts have been developed. Regioselective iron(III)-catalyzed halogenation of the aryl ring, followed by iron- or copper-catalyzed O-arylation allowed the synthesis of various structural analogues, including the benzo[b]furan-derived natural products corsifuran C, moracin F, and caleprunin B.
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Affiliation(s)
- Martyn C. Henry
- WestCHEM, School of Chemistry, The Joseph
Black Building, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
| | - Andrew Sutherland
- WestCHEM, School of Chemistry, The Joseph
Black Building, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
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24
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Noland WE, Kumar HV, Sharma A, Wei B, Girmachew S. Fe-Catalyzed Domino Intramolecular Nucleophilic Substitution of 4-Hydroxychromen-2-one and Pyran-2-one/Ring Opening of Activated Arene: An Easy Access to 2,3-Disubstituted Furo[3,2,-c]coumarins and Furo[3,2,-c]pyran-4-ones via Nonsymmetric Triarylmethanes. Org Lett 2020; 22:1801-1806. [DOI: 10.1021/acs.orglett.0c00123] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wayland E. Noland
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Honnaiah Vijay Kumar
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Arjun Sharma
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Binyuan Wei
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Selamawit Girmachew
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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25
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Wen C, Jiang X, Wu K, Luo R, Li Q. Palladium-catalyzed cross-coupling reaction of alkenyl aluminums with 2-bromobenzo[b]furans. RSC Adv 2020; 10:19610-19614. [PMID: 35515440 PMCID: PMC9054126 DOI: 10.1039/d0ra02984j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/16/2020] [Indexed: 12/18/2022] Open
Abstract
Highly efficient and simple cross-coupling reactions of 2-bromobenzo[b]furans with alkenylaluminum reagents for the synthesis of 2-alkenylbenzo[b]furan derivatives using PdCl2 (3 mol%)/XantPhos (6 mol%) as catalyst are reported. Excellent yields (up to 97%) were obtained for a wide range of substrates at 80 °C for 4 h in DCE. PdCl2 (3 mol%)/XantPhos (6 mol%) complexes was found to be a highly efficient catalyst for the synthesis of 2-alkenylbenzo[b]furans from 2-bromobenzo[b]furans and alkenylaluminums. The reaction was also found to be effective in gram-scale synthesis.![]()
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Affiliation(s)
- Chang Wen
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu
- China
| | - Xin Jiang
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu
- China
| | - Kun Wu
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu
- China
| | - Ruiqiang Luo
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu
- China
| | - Qinghan Li
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu
- China
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26
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Li MB, Posevins D, Geoffroy A, Zhu C, Bäckvall JE. Efficient Heterogeneous Palladium-Catalyzed Oxidative Cascade Reactions of Enallenols to Furan and Oxaborole Derivatives. Angew Chem Int Ed Engl 2019; 59:1992-1996. [PMID: 31729824 DOI: 10.1002/anie.201911462] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/06/2019] [Indexed: 12/14/2022]
Abstract
A heterogeneous palladium-catalyzed oxidative cyclization of enallenols has been developed for the construction of highly substituted furan and oxaborole derivatives. The heterogeneous catalyst (Pd-AmP-MCF) exhibits high activity, high site- and stereoselectivity, and efficient palladium recyclability in the transformations.
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Affiliation(s)
- Man-Bo Li
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden.,Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, P. R. China
| | - Daniels Posevins
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Antoine Geoffroy
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Can Zhu
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Jan-E Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
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27
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Li M, Posevins D, Geoffroy A, Zhu C, Bäckvall J. Efficient Heterogeneous Palladium‐Catalyzed Oxidative Cascade Reactions of Enallenols to Furan and Oxaborole Derivatives. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911462] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Man‐Bo Li
- Department of Organic ChemistryArrhenius LaboratoryStockholm University 10691 Stockholm Sweden
- Institute of Physical Science and Information TechnologyAnhui University Hefei Anhui 230601 P. R. China
| | - Daniels Posevins
- Department of Organic ChemistryArrhenius LaboratoryStockholm University 10691 Stockholm Sweden
| | - Antoine Geoffroy
- Department of Organic ChemistryArrhenius LaboratoryStockholm University 10691 Stockholm Sweden
| | - Can Zhu
- Department of Organic ChemistryArrhenius LaboratoryStockholm University 10691 Stockholm Sweden
| | - Jan‐E. Bäckvall
- Department of Organic ChemistryArrhenius LaboratoryStockholm University 10691 Stockholm Sweden
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28
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Li D, Seavill PW, Wilden JD. Application of Electrochemical Processes to Classical Iodocyclisation: Utility for Selectivity and Mechanistic Insight. ChemElectroChem 2019. [DOI: 10.1002/celc.201901502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Diyuan Li
- Department of ChemistryUniversity College London 20 Gordon Street London, WC1H 0AJ UK
| | - Peter W. Seavill
- Department of ChemistryUniversity College London 20 Gordon Street London, WC1H 0AJ UK
| | - Jonathan D. Wilden
- Department of ChemistryUniversity College London 20 Gordon Street London, WC1H 0AJ UK
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29
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Song Y, Wu W, Fu C, Huang X, Ma S. Palladium‐Catalyzed Triple Cyclization of 2,7‐Alkadiynylic Carbonates with 2‐Butyne‐1,4‐diol or 2‐Butyne‐1,4‐disulfonamides. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yulong Song
- Laboratory of Molecular Recognition and Synthesis, Department of ChemistryZhejiang University Hangzhou 310027, Zhejiang People's Republic of China
| | - Wangteng Wu
- Laboratory of Molecular Recognition and Synthesis, Department of ChemistryZhejiang University Hangzhou 310027, Zhejiang People's Republic of China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of ChemistryZhejiang University Hangzhou 310027, Zhejiang People's Republic of China
| | - Xin Huang
- Laboratory of Molecular Recognition and Synthesis, Department of ChemistryZhejiang University Hangzhou 310027, Zhejiang People's Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of ChemistryZhejiang University Hangzhou 310027, Zhejiang People's Republic of China
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30
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Zhang Y, Fu C, Huang X, Ma S. Construction of Benzopolycycles via Pd-Catalyzed Intermolecular Cyclization of 2,7-Alkadiynylic Carbonates with Terminal Propargyl Tertiary Alcohols. Org Lett 2019; 21:3523-3527. [PMID: 30916977 DOI: 10.1021/acs.orglett.9b00746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed highly regioselective and chemoselective intermolecular cyclization of 2,7-alkadiynylic carbonates with terminal propargyl tertiary alcohols to construct benzopolycycles containing furan and pyrrole moieties has been developed with a very broad scope. Polycycles containing spirane structures or dispirane structures could be also smoothly synthesized in moderate to good yields. The reaction enjoys excellent regioselectivity.
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Affiliation(s)
- Yuchen Zhang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang People's Republic of China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang People's Republic of China
| | - Xin Huang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang People's Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang People's Republic of China
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31
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Debbarma S, Sk MR, Modak B, Maji MS. On-Water Cp*Ir(III)-Catalyzed C–H Functionalization for the Synthesis of Chromones through Annulation of Salicylaldehydes with Diazo-Ketones. J Org Chem 2019; 84:6207-6216. [DOI: 10.1021/acs.joc.9b00418] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Suvankar Debbarma
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Md Raja Sk
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Biswabrata Modak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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32
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Zhang Y, Wu W, Fu C, Huang X, Ma S. Benzene construction via Pd-catalyzed cyclization of 2,7-alkadiynylic carbonates in the presence of alkynes. Chem Sci 2019; 10:2228-2235. [PMID: 30881648 PMCID: PMC6385558 DOI: 10.1039/c8sc04681f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 12/18/2018] [Indexed: 12/27/2022] Open
Abstract
A palladium-catalyzed highly regio- and chemo-selective cyclization of 2,7-alkadiynylic carbonates with functionalized alkynes to construct 1,3-dihydroisobenzofuran and isoindoline derivatives under mild conditions has been developed. Functional groups such as alcohol, sulfonamide, and indoles could be well tolerated. After careful mechanistic studies, a mechanism involving oxidative addition and regioselectivity-defined double alkyne insertions has been proposed.
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Affiliation(s)
- Yuchen Zhang
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Wangteng Wu
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Xin Huang
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
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33
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Ma W, Huang J, Huang X, Meng S, Yang Z, Li C, Wang Y, Qi T, Li B. Direct construction of 2,3-unsubstituted benzofurans and benzothiophenes via a metal-free catalyzed intramolecular Friedel–Crafts reaction. Org Chem Front 2019. [DOI: 10.1039/c8qo01204k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A highly effective and straightforward method for the construction of 2,3-unsubstituted benzofurans and benzothiophenes has been developed.
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Affiliation(s)
- Weimin Ma
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Jiawei Huang
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Xianyu Huang
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Shulin Meng
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Zhengwei Yang
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Chao Li
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Yue Wang
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Ting Qi
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Baolin Li
- School of Chemical Sciences
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
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34
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Kattela S, de Lucca EC, Correia CRD. Enantioselective Synthesis of Phthalides and Isochromanones via Heck-Matsuda Arylation of Dihydrofurans. Chemistry 2018; 24:17691-17696. [PMID: 30290051 DOI: 10.1002/chem.201804958] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Indexed: 11/09/2022]
Abstract
In this communication, the enantioselective synthesis of phthalides and isochromanones is described through a new palladium-catalyzed Heck-Matsuda arylation/NaBH4 -reduction/lactonization sequence of 2,3- and 2,5-dihydrofurans in good overall yields and excellent enantioselectivities (up to 98:2 er). This expeditious synthesis of chiral Heck lactol intermediates allowed the diversification of the strategy to obtain medicinally relevant chiral lactones, amines, and olefins. The natural product 3-butylphthalide was obtained in three steps with an overall yield of 33 % yield in 98:2 er.
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Affiliation(s)
- Shivashankar Kattela
- Institute of Chemistry, University of Campinas, Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Emilio C de Lucca
- Institute of Chemistry, University of Campinas, Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Carlos Roque D Correia
- Institute of Chemistry, University of Campinas, Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
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35
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Benzofuran derivatives and their anti-tubercular, anti-bacterial activities. Eur J Med Chem 2018; 162:266-276. [PMID: 30448416 DOI: 10.1016/j.ejmech.2018.11.025] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/03/2018] [Accepted: 11/09/2018] [Indexed: 01/04/2023]
Abstract
Benzofuran is a fundamental structural unit in a variety of biologically active natural products, and its derivatives display various biological properties. Some benzofuran derivatives possess unique anti-tubercular and anti-bacterial action mechanism, and exhibit excellent in vitro and in vivo activities against both drug-sensitive and drug-resistant pathogens. Moreover, several benzofuran derivatives have already used in clinics for the treatment of various diseases. Thus, benzofuran is a useful pharmacophore to develop new anti-tubercular and anti-bacterial drugs. This review covers the recent advances of benzofuran derivatives as potential anti-tubercular and anti-bacterial agents, and the structure-activity relationship is also discussed to pave the way for the further rational development of this kind of derivatives.
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36
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Umareddy P, Arava VR. Syntheses of 2-Aroyl 3-Aryl Benzofuran and Benzothiophenes. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pailla Umareddy
- R&D Centre Suven Life Sciences Ltd; Plot No #18, Phase-III, Jeedimetla Hyderabad 500055 India
| | - Veera Reddy Arava
- R&D Centre Suven Life Sciences Ltd; Plot No #18, Phase-III, Jeedimetla Hyderabad 500055 India
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37
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Zhang J, Cheng S, Cai Z, Liu P, Sun P. Radical Addition Cascade Cyclization of 1,6-Enynes with DMSO To Access Methylsulfonylated and Carbonylated Benzofurans under Transition-Metal-Free Conditions. J Org Chem 2018; 83:9344-9352. [DOI: 10.1021/acs.joc.8b01265] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jie Zhang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Shijing Cheng
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Zhiqiang Cai
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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38
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Agasti S, Dey A, Maiti D. Palladium-catalyzed benzofuran and indole synthesis by multiple C-H functionalizations. Chem Commun (Camb) 2018; 53:6544-6556. [PMID: 28569899 DOI: 10.1039/c7cc02053h] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Heterocyclic compounds are commonly found in the core structures of several pharmaceuticals, natural products, and agrochemicals, thus spurring intensive research for conducting their synthesis in a mild and simpler way. Over the years, a host of different strategies has been introduced in an effort to synthesize these heterocyles. In this context, significant attention has been gained by methodologies that ensure both step as well as atom efficiency. Synthesis of heterocyclic moieties via multiple C-H activations was found to fulfill these expectations besides guaranteeing the use of starting materials that are easily procurable. This review is focused on the current development in the field of benzofuran and indole synthesis using multiple C-H functionalization strategies.
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Affiliation(s)
- Soumitra Agasti
- Department of Chemistry, Indian Institute of Technology Bombay, India.
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39
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Barata-Vallejo S, Bonesi S, Postigo A. Late stage trifluoromethylthiolation strategies for organic compounds. Org Biomol Chem 2018; 14:7150-82. [PMID: 27354317 DOI: 10.1039/c6ob00763e] [Citation(s) in RCA: 206] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Substitution by the CF3S group allows for an increase in lipophilicity and electron-withdrawing properties along with an improvement in the bioavailability of medicinal targets; consequently, the late stage introduction of CF3S moieties into medicinal scaffolds is a sought-after strategy in synthetic organic chemistry. Different newly-developed electrophilic and nucleophilic reagents are used to effect the trifluoromethylthiolation of (hetero)aromatic compounds, aliphatic compounds (alkyl, alkenyl, alkynyl substrates), the trifluoromethylthiolation at the α- and β-carbonyl positions, and heteroatoms (N- and S-). Such reactions can involve homolytic substitutions, or functional-group substitutions (ipso). Addition reactions of electrophilic reagents to double and triple bonds followed by ring-cyclizations will be shown to yield relevant CF3S-substituted heteroaromatic compounds with relevant pharmacological action.
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Affiliation(s)
- Sebastian Barata-Vallejo
- Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-CONICET-Junín 954 CP 1113-Buenos Aires, Argentina.
| | - Sergio Bonesi
- Departamento de Química Orgánica, CIHIDECAR-CONICET, Pabellón II, 3er piso. and Ciudad Universitaria, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina.
| | - Al Postigo
- Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-CONICET-Junín 954 CP 1113-Buenos Aires, Argentina.
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40
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Zhang M, Yang J, Xu Q, Dong C, Han LB, Shen R. Copper-Catalyzed Dehydrative Cyclization of 1-(2-Hydroxyphenyl)propargyl Alcohols with P(O)H Compounds for the Synthesis of 2-Phosphorylmethylbenzofurans. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701368] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Ming Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Jianlin Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Qing Xu
- College of Chemistry and Materials Engineering; Wenzhou University, Wenzhou; Zhejiang 325035 People's Republic of China
| | - Chao Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Li-Biao Han
- National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba; Ibaraki 305-8565 Japan
| | - Ruwei Shen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
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41
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Wang C, Fan Y, Yao Y, Chen W, Cui X, Zhu G, Zhou W, Tang L. Base-Promoted Substitution Reaction: A Simple, Economical, and Efficient Method for Obtaining 3-Sulfenylated Benzo[ b
]furan Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201702142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cong Wang
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
| | - Yuxin Fan
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
| | - Yaoyao Yao
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Wenzhang Chen
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Xing Cui
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Gaofeng Zhu
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Wei Zhou
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Lei Tang
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
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42
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Klaus V, Wittmann S, Senn HM, Clark JS. Synthesis of fused tricyclic systems by thermal Cope rearrangement of furan-substituted vinyl cyclopropanes. Org Biomol Chem 2018; 16:3970-3982. [DOI: 10.1039/c8ob00924d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel method for the construction of hexahydroazuleno[4,5-b]furans has been developed in which 1-furanyl-2-alkenylcyclopropanes undergo highly stereoselective thermal Cope rearrangement.
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Affiliation(s)
- Verena Klaus
- WestCHEM
- School of Chemistry
- Joseph Black Building
- University of Glasgow
- Glasgow G12 8QQ
| | - Stéphane Wittmann
- WestCHEM
- School of Chemistry
- Joseph Black Building
- University of Glasgow
- Glasgow G12 8QQ
| | - Hans M. Senn
- WestCHEM
- School of Chemistry
- Joseph Black Building
- University of Glasgow
- Glasgow G12 8QQ
| | - J. Stephen Clark
- WestCHEM
- School of Chemistry
- Joseph Black Building
- University of Glasgow
- Glasgow G12 8QQ
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43
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Luo J, Lu D, Peng Y, Tang Q. Paal-Knorr Furan Synthesis Using TiCl4
as Dehydrating Agent: A Concise Furan Synthesis from α-Haloketones and β-Dicarbonyl Compounds. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700340] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Juan Luo
- College of Pharmacy, Faculty of Laboratory Medicine; Chongqing Research Center for Pharmaceutical Engineering; Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology; Chongqing Medical University; No.1 Yixueyuan Road Chongqing 400016 P. R. China
| | - Dan Lu
- College of Pharmacy, Faculty of Laboratory Medicine; Chongqing Research Center for Pharmaceutical Engineering; Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology; Chongqing Medical University; No.1 Yixueyuan Road Chongqing 400016 P. R. China
| | - Yi Peng
- College of Pharmacy, Faculty of Laboratory Medicine; Chongqing Research Center for Pharmaceutical Engineering; Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology; Chongqing Medical University; No.1 Yixueyuan Road Chongqing 400016 P. R. China
| | - Qiang Tang
- College of Pharmacy, Faculty of Laboratory Medicine; Chongqing Research Center for Pharmaceutical Engineering; Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology; Chongqing Medical University; No.1 Yixueyuan Road Chongqing 400016 P. R. China
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44
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Makrerougras M, Coffinier R, Oger S, Chevalier A, Sabot C, Franck X. Total Synthesis and Structural Revision of Chaetoviridins A. Org Lett 2017; 19:4146-4149. [DOI: 10.1021/acs.orglett.7b02053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mehdi Makrerougras
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Romain Coffinier
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Samuel Oger
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Arnaud Chevalier
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Cyrille Sabot
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Xavier Franck
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
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45
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Kozlovskii AG, Antipova TV, Zhelifonova VP, Baskunov BP, Ivanushkina NE, Kochkina GA, Ozerskaya SM. Secondary metabolites of fungi of the Usti section, genus Aspergillus and their application in chemosystematics. Microbiology (Reading) 2017. [DOI: 10.1134/s0026261717020114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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46
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Rehan M, Nallagonda R, Das BG, Meena T, Ghorai P. Synthesis of Functionalized Benzo[b]furans via Oxidative Cyclization of o-Cinnamyl Phenols. J Org Chem 2017; 82:3411-3424. [PMID: 28249386 DOI: 10.1021/acs.joc.6b02752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disclosed herein is an efficient synthetic route for the synthesis of functionalized 2-benzyl benzo[b]furans via a regioselective 5-exo-trig intramolecular oxidative cyclization of ortho-cinnamyl phenols using [PdCl2(CH3CN)2] as catalyst and benzoquinone as an oxidant. Further, a sequential ortho-cinnamylation of phenols using cinnamyl alcohols catalyzed by Re2O7, followed by an oxidative cyclization using the above Pd catalyst, is performed. The reaction showed broad substrate scope with good to excellent yields.
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Affiliation(s)
- Mohammad Rehan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Rajender Nallagonda
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Braja Gopal Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Tannu Meena
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
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47
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Pergomet JL, Larghi EL, Kaufman TS, Bracca ABJ. First total synthesis of the only known 2-isopropyliden-2H-benzofuran-3-one isolated from V. luetzelburgii. RSC Adv 2017. [DOI: 10.1039/c6ra28587b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The first total synthesis of the unique isopropyliden-2H-benzofuran-3-one, isolated from Verbesina luetzelburgii, is reported in racemic and a chiral form.
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Affiliation(s)
- Jorgelina L. Pergomet
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Enrique L. Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Andrea B. J. Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
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48
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Rao MLN, Talode JB, Murty VN. Rapid regio- and multi-coupling reactivity of 2,3-dibromobenzofurans with atom-economic triarylbismuths under palladium catalysis. Beilstein J Org Chem 2016; 12:2065-2076. [PMID: 27829912 PMCID: PMC5082443 DOI: 10.3762/bjoc.12.195] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/25/2016] [Indexed: 12/23/2022] Open
Abstract
A regio- and chemoselective cross-coupling study using 2,3-dibromobenzofurans and 2,3,5-tribromobenzofuran was achieved with sub-stoichiometric loadings of triarylbismuths as atom-economic reagents under Pd-catalyzed conditions. As part of this study, various 2,3-diaryl- and 2,3,5-triarylbenzofuran products were obtained in high yields, involving one-pot operations and short reaction times.
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Affiliation(s)
- Maddali L N Rao
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, U.P., India, Tel/ Fax: +91-512-2597532
| | - Jalindar B Talode
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, U.P., India, Tel/ Fax: +91-512-2597532
| | - Venneti N Murty
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, U.P., India, Tel/ Fax: +91-512-2597532
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49
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Ma X, Wu Y, Zhang Y, Teng L, Xie J, Liao W. Regioselective synthesis of functionalized dihydroquinolines via organocatalytic allylic alkylation. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-5481-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Boominathan SSK, Hou RJ, Hu WP, Huang PJ, Wang JJ. A Palladium-Catalyzed Domino Approach to 2,3-Disubstituted Benzofuransviaan Intermolecular Carbopalladation/C(sp3)−H Functionalization/Isomerization Sequence. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600356] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Ruei-Jhih Hou
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 80708 Taiwan
| | - Wan-Ping Hu
- Department of Biotechnology; Kaohsiung Medical University; Kaohsiung 80708 Taiwan
| | - Po-Jui Huang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 80708 Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 80708 Taiwan
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