1
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Tu Y, Xu B, Wang Q, Dong H, Zhang ZM, Zhang J. Palladium/TY-Phos-Catalyzed Asymmetric Heck/Tsuji-Trost Reaction of o-Bromophenols with 1,3-Dienes. J Am Chem Soc 2023; 145:4378-4383. [PMID: 36795796 DOI: 10.1021/jacs.2c12752] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
2,3-Dihydrobenzofurans are crucial building blocks in the synthesis of natural products and pharmaceutical molecules. However, their asymmetric synthesis has been a long-standing formidable challenge so far. In this work, we developed a highly enantioselective Pd/TY-Phos-catalyzed Heck/Tsuji-Trost reaction of o-bromophenols with various 1,3-dienes, allowing expedient access to chiral substituted 2,3-dihydrobenzofurans. This reaction features excellent regio- and enantiocontrol, high functional group tolerance, and easy scalability. More importantly, the demonstration of this method as a highly valuable tool for the construction of optically pure natural products (R)-tremetone and fomannoxin is highlighted.
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Affiliation(s)
- Youshao Tu
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Bing Xu
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Qian Wang
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China
| | - Honglin Dong
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
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2
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Jabeen S, Ghosh G, Lapoot L, Durantini AM, Greer A. Sensitized Photooxidation of Ortho-prenyl Phenol: Biomimetic Dihydrobenzofuran Synthesis and Total 1 O 2 Quenching. Photochem Photobiol 2022; 99:637-641. [PMID: 35977738 DOI: 10.1111/php.13689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/05/2022] [Indexed: 11/30/2022]
Abstract
The sensitized photooxidation of ortho-prenyl phenol is described with evidence that solvent aproticity favors the formation of a dihydrobenzofuran [2-(prop-1-en-2-yl)-2,3-dihydrobenzofuran], a moiety commonly found in natural products. Benzene solvent increased the total quenching rate constant (kT ) of singlet oxygen with prenyl phenol by ~10-fold compared to methanol. A mechanism is proposed with preferential addition of singlet oxygen addition to prenyl site due to hydrogen bonding with phenol OH group, which causes a divergence away from the singlet oxygen 'ene' reaction toward the dihydrobenzofuran as the major product. The reaction is a mixed photooxidized system since an epoxide arises by a type I sensitized photooxidation.
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Affiliation(s)
- Shakeela Jabeen
- Department of Chemistry, Brooklyn College of the City University of New York, Brooklyn, New York 11210, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Goutam Ghosh
- Department of Chemistry, Brooklyn College of the City University of New York, Brooklyn, New York 11210, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Lloyd Lapoot
- Department of Chemistry, Brooklyn College of the City University of New York, Brooklyn, New York 11210, United States.,Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Andrés M Durantini
- Department of Chemistry, Brooklyn College of the City University of New York, Brooklyn, New York 11210, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States.,IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nac. 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Alexander Greer
- Department of Chemistry, Brooklyn College of the City University of New York, Brooklyn, New York 11210, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States.,Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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3
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Song R, Lian Z, Feng W, Guan T, Si W, Yang D, Lv J. Palladium-Catalyzed Decarboxylative O-Allylation of Phenols with γ-Methylidene-δ-valerolactones. Org Chem Front 2022. [DOI: 10.1039/d2qo00444e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Palladium-Catalyzed decarboxylative O-allylation of phenols was developed, in which a γ-methylidene-δ- valerolactone (GMDVs) was found to be an efficient and selective allylation reagent, affording the target allyl phenyl...
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4
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Rouh H, Tang Y, Zhang S, Ali AIM, Unruh D, Surowiec K, Li G. Asymmetric synthesis of functionalized 2,3-dihydrobenzofurans using salicyl N-phosphonyl imines facilitated by group-assisted purification (GAP) chemistry. Org Biomol Chem 2021; 19:10319-10325. [PMID: 34812831 DOI: 10.1039/d1ob02078a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this work, we present a strategy for the preparation of functionalized 2,3-dihydrobenzofuran derivatives via the Cs2CO3-catalyzed domino annulation of enantiopure chiral salicyl N-phosphonyl imines with bromo malonates, which offers an avenue for the construction of 2,3-dihydrobenzofurans. Nineteen examples were synthesized in impressive chemical yields and diastereoselectivity. The products were purified simply by washing the crude mixtures with hexanes following group-assisted purification chemistry/technology to bypass traditional separation methods which often result in a loss of product. The absolute configuration was unambiguously assigned by X-ray structural analysis.
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Affiliation(s)
- Hossein Rouh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
| | - Yao Tang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
| | - Sai Zhang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
| | - Ahmed I M Ali
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
| | - Daniel Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
| | - Kazimierz Surowiec
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
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5
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Feng J, Wang S, Feng J, Li Q, Yue J, Yue G, Zou P, Wang G. Mild and efficient synthesis of trans-3-aryl-2-nitro-2,3-dihydrobenzofurans on water. NEW J CHEM 2020. [DOI: 10.1039/d0nj00548g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A protocol to prepare trans-3-aryl-2-nitro-2,3-dihydrobenzofurans has been developed on water. The protocol avoids the use of toxic solvents, tedious work-up procedures, and chromatographic separation.
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Affiliation(s)
- Juhua Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Siyuan Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Jinxiang Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Qiuju Li
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Junping Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guizhou Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Ping Zou
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guangtu Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
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6
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He X, Xie M, Tang Q, Zuo Y, Li R, Shang Y. Catalyst-Free Synthesis of 2,3-Dihydrobenzofurans via a Formal [4+1] Annulation of Propargylamines with Sulfur Ylides. J Org Chem 2019; 84:11623-11638. [DOI: 10.1021/acs.joc.9b01557] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Qiang Tang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Youpeng Zuo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Ruxue Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
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7
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Hsieh CE, Jiang YM, Chou CM. Functionalized Allyl Aryl Ether Synthesis from Benzoic Acids Using a Dearomatization and Decarboxylative Allylation Approach. J Org Chem 2019; 84:653-665. [PMID: 30596422 DOI: 10.1021/acs.joc.8b02487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A strategy toward the preparation of substituted allyl aryl ethers from benzoic acids via a dearomatization and decarboxylative allylation (DcA) reaction is presented. The benzoic acids undergo a dearomatization to give alkylated 2,5-cyclohexadienyl ketoesters which are subjected to a palladium-catalyzed DcA reaction, providing a variety of functionalized allyl aryl ethers. In addition, the combination of a resonance stabilized DcA reaction with a Claisen rearrangement for the synthesis of multisubstituted phenols and applying to dihydroplicatin B derivative synthesis is also presented.
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Affiliation(s)
- Cheng-En Hsieh
- Department of Applied Chemistry , National University of Kaohsiung , 700, Kaohsiung University Road , Nanzih District, 81148 Kaohsiung , Taiwan
| | - Yu-Min Jiang
- Department of Applied Chemistry , National University of Kaohsiung , 700, Kaohsiung University Road , Nanzih District, 81148 Kaohsiung , Taiwan
| | - Chih-Ming Chou
- Department of Applied Chemistry , National University of Kaohsiung , 700, Kaohsiung University Road , Nanzih District, 81148 Kaohsiung , Taiwan
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8
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Sakate SS, Shinde SH, Kasar GB, Chikate RC, Rode CV. Cascade synthesis of dihydrobenzofuran via Claisen rearrangement of allyl aryl ethers using FeCl 3 /MCM-41 catalyst. JOURNAL OF SAUDI CHEMICAL SOCIETY 2018. [DOI: 10.1016/j.jscs.2017.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Yang J, Mo H, Wu H, Cao D, Pan C, Wang Z. An elimination/Heck coupling/allylation cascade reaction: synthesis of 2,3-dihydrobenzofurans from allenoate adducts. Chem Commun (Camb) 2018; 54:1213-1216. [PMID: 29336446 DOI: 10.1039/c7cc07435b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A highly regio- and stereoselective Pd-catalyzed cascade reaction of allenoate adducts has been developed. Various allenoate adducts of phosphine-catalyzed addition of allenoates are found to be efficient substrates for the preparation of 2,3-dihydrobenzofuran. It is the first example of allenoate adducts used as ideal and practical precursors of hard-to-get functionalized 1,3-butadienes for heterocycle synthesis.
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Affiliation(s)
- Jianguo Yang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou, Zhejiang 317000, P. R. China
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10
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Yang J, Mo H, Jin X, Cao D, Wu H, Chen D, Wang Z. Vinylogous Elimination/Heck Coupling/Allylation Domino Reactions: Access to 2-Substituted 2,3-Dihydrobenzofurans and Indolines. J Org Chem 2018; 83:2592-2600. [PMID: 29419292 DOI: 10.1021/acs.joc.7b02986] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A highly regio- and stereoselctive palladium-catalyzed domino reaction of functionalized aryl allyl ethers has been developed. Various aryl allyl ethers derived from the phosphine-catalyzed addition of electron-deficient allenes with phenol are found to be efficient substrates for the synthesis of 2-substituted 2,3-dihydrobenzofurans and indolines. It is the first example of aryl allyl ether used as an ideal and practical precursor of hard to get functionalized 1,3-butadiene for the heterocyclic compound synthesis.
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Affiliation(s)
- Jianguo Yang
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Hanjie Mo
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Xiuxiu Jin
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Dongdong Cao
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Haijian Wu
- College of Pharmaceutical Science, Zhejiang Chinese Medical University , Hangzhou, Zhejiang 311400, People's Republic of China
| | - Di Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Zhiming Wang
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China.,College of Pharmaceutical Science, Zhejiang Chinese Medical University , Hangzhou, Zhejiang 311400, People's Republic of China
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11
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Cheng Y, Fang Z, Li W, Li P. Phosphine-mediated enantioselective [4 + 1] annulations between ortho-quinone methides and Morita–Baylis–Hillman carbonates. Org Chem Front 2018. [DOI: 10.1039/c8qo00487k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
First example of phosphine catalyzed enantioselective [4 + 1] annulations of o-QMs and MBH carbonates for chiral 2,3-dihydrobenzofurans.
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Affiliation(s)
- Yuyu Cheng
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Zhiqiang Fang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Wenjun Li
- Department of Medicinal Chemistry
- School of Pharmacy
- Qingdao University
- Qingdao
- China
| | - Pengfei Li
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
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12
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Devi R, Das J, Sarma B, Das SK. Phenolate-induced intramolecular ring-opening cyclization of N-tosylaziridines: access to functionalized benzoxacycles. Org Biomol Chem 2018; 16:5846-5858. [DOI: 10.1039/c8ob01143e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenolate-induced, diastereo- and regioselective intramolecular exo-tet ring-opening cyclization of N-tosylaziridines has been achieved for the first time.
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Affiliation(s)
- Runjun Devi
- Department of Chemical Sciences
- Tezpur University
- Napaam
- Tezpur
- India-784028
| | - Jonali Das
- Department of Chemical Sciences
- Tezpur University
- Napaam
- Tezpur
- India-784028
| | - Bipul Sarma
- Department of Chemical Sciences
- Tezpur University
- Napaam
- Tezpur
- India-784028
| | - Sajal Kumar Das
- Department of Chemical Sciences
- Tezpur University
- Napaam
- Tezpur
- India-784028
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13
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Zheng Y, Wang J, Xia PJ, Zhao QL, Xiao JA, Xiang HY, Chen XQ, Yang H. Organocatalytic Asymmetric Allylic Alkylation of Morita-Baylis-Hillman Carbonates with Diethyl 2-Aminomalonate Assisted by In Situ Protection. J Org Chem 2017; 82:12202-12208. [PMID: 29090919 DOI: 10.1021/acs.joc.7b02064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
With the aid of in situ protection by N-(2-formylphenyl)-4-methyl-benzenesulfonamide, enantioselective allylic alkylation of Morita-Baylis-Hillman carbonates with diethyl 2-aminomalonate was successfully realized. The corresponding adducts can be obtained in up to 99% yield with up to 98% ee as well as excellent regioselectivity. Besides, the adducts with opposite configurations were readily prepared by utilizing easily available and inexpensive quinine or quinidine as organocatalyst. Facile deprotection of the resulting adduct provides straightforward access to enantiopure α-methylene-γ-lactam.
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Affiliation(s)
- Yu Zheng
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Jing Wang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Qing-Lan Zhao
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University , Nanning, Guangxi 530001, People's Republic of China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
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14
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Abstract
BACKGROUND Doronicum austriacum Jacq., Asteraceae, is a plant which is used in traditional alpine medicine. Historical sources describe the medical use of the root, but up until now only a few studies evaluated its pharmacological properties. The evaluation of the dichloromethane extract, and its major compounds for their anti-inflammatory and anti-oxidant potential was performed in macrophages J774A.1 and C6 astrocytes. Nitric oxide (NO) and reactive oxygen species (ROS) release, as well as nitrotyrosine formation, were evaluated. Moreover, in order to evaluate the potential anti-proliferative activity, under the same experimental conditions, 3-(4,5-dimethyltiazol-2yl)-2,5-phenyl-2H-tetrazolium bromide (MTT) assay was also performed. Our results indicate that Doronicum austriacum has a significant effect in inhibiting both pro-inflammatory and pro-oxidative mediators. All isolated compounds were able to significantly inhibit NO and ROS release both in macrophage and in astrocytes cells, even if the effect was more pronounced in macrophage. In particular, among the tested compounds, 6,12-dihydroxy-(-)-2S-tremetone exerted stronger activity. Both extract and single compounds did not affect cellular viability. This study provides evidence for the pharmacological anti-inflammatory and anti-oxidant potential of Doronicum austriacum extract. These effects could be due to the activity of its major constituents and subsequent identification of benzofurans as a promising compound class to combat inflammation and related diseases.
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15
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Ngwira KJ, Rousseau AL, Johnson MM, de Koning CB. Reactions of [2-(2-Naphthyl)phenyl]acetylenes and 2-(2-Naphthyl)benzaldehydeO-Phenyloximes: Synthesis of the Angucycline Tetrangulol and 1,10,12-Trimethoxy-8-methylbenzo[c]phenanthridine. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601373] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kennedy J. Ngwira
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
| | - Amanda L. Rousseau
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
| | - Myron M. Johnson
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
| | - Charles B. de Koning
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
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16
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Georgiou KH, Pelly SC, de Koning CB. The first stereoselective synthesis of the natural product, rotenone. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Novel methodology for the synthesis of the benzo[b]phenanthridine and 6H-dibenzo[c,h]chromen-6-one skeletons. Reactions of 2-naphthylbenzylamines and 2-naphthylbenzyl alcohols. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Yang QQ, Xiao WJ. Catalytic Asymmetric Synthesis of Chiral Dihydrobenzofurans through a Formal [4+1] Annulation Reaction of Sulfur Ylides and In Situ Generatedortho-Quinone Methides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601186] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Qing-Qing Yang
- College of Materials and Chemical Engineering; Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials; China Three Gorges University; 8 Daxue Road 443002 Yichang Hubei China
- Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road 430079 Wuhan Hubei China
| | - Wen-Jing Xiao
- Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road 430079 Wuhan Hubei China
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19
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Hutt JT, Wolfe JP. Synthesis of 2,3-Dihydrobenzofurans via the Palladium Catalyzed Carboalkoxylation of 2-Allylphenols. Org Chem Front 2016; 3:1314-1318. [PMID: 28392926 PMCID: PMC5382964 DOI: 10.1039/c6qo00215c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new Pd-catalyzed alkene carboalkoxylation strategy for the preparation of 2,3-dihydrobenzofurans is described. This method effects the coupling of readily available 2-allylphenol derivatives with aryl triflates to generate a wide range of functionalized 2,3-dihydrobenzofurans in good yields and diastereoselectivities (up to >20:1). Use of newly developed reaction conditions that promote anti-heteropalladation of the alkene is essential in order to generate products in high yield.
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Affiliation(s)
- Johnathon T Hutt
- University of Michigan, Department of Chemistry, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - John P Wolfe
- University of Michigan, Department of Chemistry, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
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20
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Ponra S, Majumdar KC. Brønsted acid-promoted synthesis of common heterocycles and related bio-active and functional molecules. RSC Adv 2016. [DOI: 10.1039/c5ra27069c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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21
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Atanasova TP, Riley S, Biros SM, Staples RJ, Ngassa FN. Crystal structure of 3,5-di-methyl-phenyl 2-nitro-benzene-sulfonate. Acta Crystallogr E Crystallogr Commun 2015; 71:1045-7. [PMID: 26396844 PMCID: PMC4555383 DOI: 10.1107/s2056989015015078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Accepted: 08/12/2015] [Indexed: 12/02/2022]
Abstract
The title compound, C14H13NO5S, was synthesized via a nucleophilic substitution reaction between 3,5-di-methyl-phenol and 2-nitro-benzene-sulfonyl chloride. The aromatic rings attached to the SO3 group are oriented in a gauche fashion around the ester S-O bond, with a C-S-O-C torsion angle of 84.68 (11)°. The mol-ecules form centrosymmetric dimers via π-π stacking inter-actions between 3,5-di-methyl-phenyl groups (centroid-centroid distance = 3.709 Å). An inter-molecular S=O⋯N inter-action between the sulfonyl and nitro groups, with an O⋯N distance of 2.9840 (18) Å, organizes the dimers into columns extending along [011]. These columns are further assembled into (111) layers through C-H⋯O inter-actions.
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Affiliation(s)
- Tsvetelina P. Atanasova
- Department of Chemistry, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA
| | - Sean Riley
- Department of Chemistry, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA
| | - Shannon M. Biros
- Department of Chemistry, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA
| | - Richard J. Staples
- Center for Crystallographic Research, Department of Chemistry, Michigan State University, 578 S. Shaw Lane, East Lansing, MI 48824, USA
| | - Felix N. Ngassa
- Department of Chemistry, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA
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22
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Hassam M, Taher A, Arnott GE, Green IR, van Otterlo WAL. Isomerization of Allylbenzenes. Chem Rev 2015; 115:5462-569. [DOI: 10.1021/acs.chemrev.5b00052] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mohammad Hassam
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Abu Taher
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Gareth E. Arnott
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Ivan R. Green
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Willem A. L. van Otterlo
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
- School
of Chemistry, University of the Witwatersrand, Braamfontein, Johannesburg 2000, South Africa
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23
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Worayuthakarn R, Boonya-udtayan S, Ruchirawat S, Thasana N. Total Synthesis of Unsymmetrical Benzils, Scandione and Calophione A. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301722] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Wu J, Wang M, Wang L, Wang J, Jiang L. How the bicyclo[4.1.0] substrate isomerizes into 4,5-dihydrobenzo[b]furan: the contribution from W(CO)5 and NEt3. J Org Chem 2013; 78:10812-20. [PMID: 24093473 DOI: 10.1021/jo4017748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The cycloisomerization of a bicyclo[4.1.0] substrate into 4,5-dihydrobenzo[b]furan was investigated by using density functional theory (DFT). Comparative studies on four models (model I: with W(CO)5 and NEt3; model II: without NEt3; model III: without W(CO)5; model IV: without W(CO)5 and NEt3) indicate that this reaction is the most likely to proceed under model I to give the product. The ring closure process is greatly associated with the H1 and H2 transfer processes, because in the H1 transfer process, the carbene C3 atom is mainly stabilized by W(CO)5, and in the H2 atom transfer process the C3 atom is mainly stabilized by the O1 atom. The rearrangement of 12 to give 14 is the rate-determining step of this reaction with a free energy barrier of 31.0 kcal/mol. The presence of W(CO)5 can not only promote the H1 transfer and the ring closure (1→6-[W]) but can also be slightly favorable for the isomerization of 6-[W] into 11-[W](6-[W]→11-[W]). NEt3 mainly has an effect in the 6-[W]→11-[W] stage, in which it mainly plays proton-transfer bridge and proton-adsorption roles.
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Affiliation(s)
- Jingxi Wu
- School of Chemistry and Chemical Engineering, Guangxi University , Nanning 530004, People's Republic of China
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25
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Liu Y, Du H. Pd-catalyzed asymmetric allylic alkylations of 3-substituted indoles using chiral P/olefin ligands. Org Lett 2013; 15:740-3. [PMID: 23391477 DOI: 10.1021/ol3032736] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed asymmetric allylic alkylation of 3-substituted indoles using P/olefin ligands was successfully achieved to afford a variety of indolenines containing a quaternary carbon stereocenter in high yields with up to 87% ee. Significantly, this reaction provides a concise access to a stereoisomer of the natural product Angelicastigmin.
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Affiliation(s)
- Yilin Liu
- Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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26
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Shue YJ, Yang SC. Activator-free and one-pot C-allylation by simple palladium catalyst in water. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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27
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Vinosha B, Perumal S, Renuga S, Almansour AI. A facile domino protocol for the stereoselective synthesis of trans-2,3-dihydrobenzofurans and cis-5,6-dihydrofuro[2,3-d]pyrimidines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Uyanik M, Ishihara K. Catalysis with In Situ-Generated (Hypo)iodite Ions for Oxidative Coupling Reactions. ChemCatChem 2011. [DOI: 10.1002/cctc.201100352] [Citation(s) in RCA: 247] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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29
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First enantioselective synthesis of methyl (+)-7-methoxyanodendroate, an antitubercular dihydrobenzofuran. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Xie P, Wang L, Yang L, Li E, Ma J, Huang Y, Chen R. Domino Reaction for the Chemo- and Stereoselective Synthesis of trans-2,3-Dihydrobenzofurans from N-Thiophosphinyl Imines and Sulfur Ylides. J Org Chem 2011; 76:7699-705. [DOI: 10.1021/jo2008737] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peizhong Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Liye Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Lihua Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Erqing Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Jianze, Ma
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Ruyu Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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31
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Jiang H, Sugiyama T, Hamajima A, Hamada Y. Asymmetric Synthesis of 2-Substituted Dihydrobenzofurans and 3-Hydroxydihydrobenzopyrans through the Enantioselective Epoxidation of O-Silyl-Protected ortho-Allylphenols. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000505] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Xie P, Huang Y, Chen R. Phosphine-Catalyzed Domino Reaction: Highly Stereoselective Synthesis of trans-2,3-Dihydrobenzofurans from Salicyl N-Thiophosphinyl Imines and Allylic Carbonates. Org Lett 2010; 12:3768-71. [DOI: 10.1021/ol101611v] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Peizhong Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Ruyu Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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33
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Uyanik M, Okamoto H, Yasui T, Ishihara K. Quaternary Ammonium (Hypo)iodite Catalysis for Enantioselective Oxidative Cycloetherification. Science 2010; 328:1376-9. [DOI: 10.1126/science.1188217] [Citation(s) in RCA: 363] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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34
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Rozhkov RV, Larock RC. Synthesis of Dihydrobenzofurans via Palladium-Catalyzed Annulation of 1,3-Dienes by o-Iodoaryl Acetates. J Org Chem 2010; 75:4131-4. [DOI: 10.1021/jo100495t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roman V. Rozhkov
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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35
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C. Majumdar K, Chattopadhyay B, K. Maji P, K. Chattopadhyay S, Samanta S. Recent Development in Palladium-Mediated Synthesis of Oxygen Heterocycles. HETEROCYCLES 2010. [DOI: 10.3987/rev-09-662-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Iron-Catalyzed Regioselective Hydroaryloxylation of CC Triple Bonds: An Efficient Synthesis of 2H-1-Benzopyran Derivatives. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900483] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Tanaka S, Seki T, Kitamura M. Asymmetric Dehydrative Cyclization of ω-Hydroxy Allyl Alcohols Catalyzed by Ruthenium Complexes. Angew Chem Int Ed Engl 2009; 48:8948-51. [DOI: 10.1002/anie.200904671] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Tanaka S, Seki T, Kitamura M. Asymmetric Dehydrative Cyclization of ω-Hydroxy Allyl Alcohols Catalyzed by Ruthenium Complexes. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904671] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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40
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Malik S, Nadir UK, Pandey PS. Reactions of 2-hydroxyaryl-α,β-unsaturated ketones with dimethylsulfonium carbonylmethylides: a new and facile diastereoselective synthesis of 2,3-disubstituted dihydrobenzofurans. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.02.041] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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41
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C. Majumdar K, Debnath P, Roy B. Metal-Catalyzed Heterocyclization: Formation of Five- and Six-Membered Oxygen Heterocycles through Carbon-Oxygen Bond Forming Reactions. HETEROCYCLES 2009. [DOI: 10.3987/rev-09-656] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Pd-catalyzed asymmetric Wacker-type cyclization of o-trisubstituted allylphenols by use of tetraoxazoline ligands. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.090] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Bérard D, Giroux MA, Racicot L, Sabot C, Canesi S. Intriguing formal [2+3] cycloaddition promoted by a hypervalent iodine reagent. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.05.114] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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44
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Adrio LA, Hii KKM. A recyclable copper(ii) catalyst for the annulation of phenols with 1,3-dienes. Chem Commun (Camb) 2008:2325-7. [PMID: 18473058 DOI: 10.1039/b719465j] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Air- and moisture-stable Cu(OTf)(2)-bipy catalyses the addition of phenols to 1,3-dienes under aerobic conditions in a tandem hydroalkoxylation-rearrangement-hydroalkylation sequence, furnishing O-heterocycles in moderate to good yields, and can be recycled without any loss in catalytic activity.
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Affiliation(s)
- Luis A Adrio
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, UK SW7 2AZ
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