1
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Xie F, Dong S, Liu J, Yu M, Ren D, Zhao J, Liu X. Enantio- and Diastereoselective Copper-Catalyzed Borylative Coupling of Styrenes and Azadienes. Org Lett 2024; 26:5335-5340. [PMID: 38885466 DOI: 10.1021/acs.orglett.4c01722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Here we disclose a CuB-catalyzed reaction between aurone-derived α,β-unsaturated imines and styrenes to produce 2-substituted benzofuran derivatives bearing both the γ-boryl functionality and α,β-unsymmetric stereogenic centers. The reaction represents the first transition-metal-catalyzed unsymmetric 1,4-Michael additions of azadienes, which would enrich the arsenal of CuB catalysis in organic synthesis. In addition, the synthetically versatile boron-alkylated products can be elaborated by chemical transformations to useful optically active benzofuran heterocycles.
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Affiliation(s)
- Fang Xie
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Shijie Dong
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Jiayi Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Miao Yu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Deyue Ren
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Jie Zhao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Xiaodan Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
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2
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Raji Reddy C, Wadekar K, Nair K, Prapurna YL. A sequential cycloisomerization/oxidative aromatization of 2-propargylcyclohexenones for direct access to substituted benzofurans. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1863-4082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A new approach for the synthesis of benzofurans starting from non-aromatic precursors is reported. The reaction involves sequential DBU-mediated cycloisomerization for furanylation followed by benzene ring construction via oxidative aromatization in the presence of Oxone®. Atom- and pot economy, simple reaction conditions, synthetic ease of starting materials and access to diverse substituted benzofurans are the major advantages of the reaction.
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Affiliation(s)
- Chada Raji Reddy
- Organic Synthesis & Process Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
| | - Ketan Wadekar
- Organic Synthesis & Process Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
| | - Karna Nair
- Organic Synthesis & Process Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
| | - Y. Lakshmi Prapurna
- Organic Synthesis and Process Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
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3
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Tanimori S, Fuchiya A, Miyamura T, Nariki H, Noda S, Makiyama K, Sonoda M. A Facile Synthesis of 2-Aminobenzoxazines Based on IodineCatalyzed Desulfurative Cyclization. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractA facile and environmentally benign access to N-aryl/alkyl-4H-benzoxazin-2-amines is achieved from 1-[2-(hydroxymethyl)phenyl/alkyl]-3-phenylthioureas under transition-metal-free conditions. The conversions occur smoothly in the presence of a catalytic amount of molecular iodine and hydrogen peroxide as the oxidant in tetrahydrofuran at room temperature to afford moderate to good yields (28–90%) of the desired products within 2 hours. This method reports the first examples of the catalytic transformations of 1-[2-(hydroxymethyl)phenyl/alkyl]-3-phenylthioureas into N-aryl/alkyl-4H-benzoxazin-2-amines based on desulfurative cyclization.
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4
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Singh S, Nerella S, Pabbaraja S, Mehta G. Stitching Ynones with Nitromethanes: Domino Synthesis of Functionally Enriched Benzofurans and Benzothiophenes. J Org Chem 2021; 86:12093-12106. [PMID: 34414759 DOI: 10.1021/acs.joc.1c01104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A convenient one-pot benzannulation of regioisomeric 2- or 3-substituted furan and thiophene ynones with a range of nitromethanes has been discovered to directly access densely and diversely functionalized benzofurans and benzothiophenes. In this protocol, the nitro group in nitromethanes functions as recursive carbanion activator to setup tandem Michael addition-6π-electrocyclization, and its eventual sacrificial elimination facilitates aromatization and overall benzannulation. This benzannulation was also explored with furan/thiophene based o-halo ynones wherein a Michael addition-SNAr process operates and nitromethanes leave their imprint to deliver nitro substituted benzo-furans and -thiophenes.
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Affiliation(s)
- Shweta Singh
- Department of Organic Synthesis and Process Chemistry, CSIR - Indian Institute of Chemical Technology, Hyderabad 500007, India.,School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Sharanya Nerella
- Department of Organic Synthesis and Process Chemistry, CSIR - Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry, CSIR - Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Goverdhan Mehta
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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5
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Palani V, Perea MA, Sarpong R. Site-Selective Cross-Coupling of Polyhalogenated Arenes and Heteroarenes with Identical Halogen Groups. Chem Rev 2021; 122:10126-10169. [PMID: 34402611 DOI: 10.1021/acs.chemrev.1c00513] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Methods to functionalize arenes and heteroarenes in a site-selective manner are highly sought after for rapidly constructing value-added molecules of medicinal, agrochemical, and materials interest. One effective approach is the site-selective cross-coupling of polyhalogenated arenes bearing multiple, but identical, halogen groups. Such cross-coupling reactions have proven to be incredibly effective for site-selective functionalization. However, they also present formidable challenges due to the inherent similarities in the reactivities of the halogen substituents. In this Review, we discuss strategies for site-selective cross-couplings of polyhalogenated arenes and heteroarenes bearing identical halogens, beginning first with an overview of the reaction types that are more traditional in nature, such as electronically, sterically, and directing-group-controlled processes. Following these examples is a description of emerging strategies, which includes ligand- and additive/solvent-controlled reactions as well as photochemically initiated processes.
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Affiliation(s)
- Vignesh Palani
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Melecio A Perea
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
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6
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Bag D, Sawant SD. Heteroarene-tethered Functionalized Alkyne Metamorphosis. Chemistry 2021; 27:1165-1218. [PMID: 32603015 DOI: 10.1002/chem.202002154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Indexed: 12/11/2022]
Abstract
Heteroarene-tethered functionalized alkynes are multipotent synthons in organic chemistry. This detailed Review described herein offers a thorough discussion of the metamorphosis of heteroarene-tethered functionalized alkynes, an area which has earned much attention over the past decade in the straightforward synthesis of architecturally complex heterocyclic scaffolds in atom and step economic manner. Depending upon the variety of functionalized alkynes, this Review is divided into multiple sections. Amongst the vast array of synthetic transformations covered, dearomatizing spirocyclizations and cascade spirocyclization/rearrangement are of great interest. Synthetic transformations involving the heteroarene-tethered functionalized alkynes with scope, challenges, limitations, mechanism, their application in the total synthesis of natural products and future perceptions are surveyed.
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Affiliation(s)
- Debojyoti Bag
- Laboratory 212, Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Canal Road, Jammu, Jammu and Kashmir, 180001, India
| | - Sanghapal D Sawant
- Laboratory 212, Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Canal Road, Jammu, Jammu and Kashmir, 180001, India
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7
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Al-Zoubi RM, Al-Jammal WK, Ferguson MJ, Murphy GK. Domino C–C/C–O bond formation: palladium-catalyzed regioselective synthesis of 7-iodobenzo[ b]furans using 1,2,3-triiodobenzenes and benzylketones. RSC Adv 2021; 11:30069-30077. [PMID: 35493993 PMCID: PMC9040925 DOI: 10.1039/d1ra05730h] [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: 07/27/2021] [Accepted: 08/31/2021] [Indexed: 11/21/2022] Open
Abstract
A facile and efficient synthesis of 7-iodobenzo[b]furan derivatives via a highly regioselective tandem α-arylation/intramolecular O-arylation of 5-substituted-1,2,3-triiodobenzenes and benzylketones is described. Remarkably, the α-arylation coupling reactions initiate exclusively at the least sterically-hindered position of the triiodoarene, which results in a highly chemoselective transformation. The highest yields were observed in reactions between electron-poor 1,2,3-triiodoarenes and electron-rich benzylketones, yet the optimized reaction conditions were found to be tolerant to a wide range of different functional groups. This unprecedent synthesis of 7-iodobenzo[b]furans from 1,2,3-triiodobenzenes is scalable, general in scope, and provides easy access to valuable precursors for other chemical transformations. A facile and unprecedented synthesis of 7-iodobenzo[b]furans via a highly regioselective tandem α-arylation/intramolecular O-arylation is reported that is efficient, scalable and creates versatile precursors for further chemical manipulation.![]()
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Affiliation(s)
- Raed M. Al-Zoubi
- Department of Chemistry, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Walid K. Al-Jammal
- Department of Chemistry, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Michael J. Ferguson
- Department of Chemistry, Gunning-Lemieux Chemistry Centre, University of Alberta, Edmonton, Alberta, T6G2G2, Canada
| | - Graham K. Murphy
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
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8
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Wu LJ, Yang LF, Lv GF, Li JH. Divergent functionalization of terminal alkynes enabled alkynylative [5+1] benzannulation of 3-acetoxy-1,4-enynes. Chem Commun (Camb) 2020; 56:15329-15332. [PMID: 33220665 DOI: 10.1039/d0cc06793h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
We here describe an alkynylative [5+1] benzannulation of 3-acetoxy-1,4-enynes with terminal alkynes, which enables both the construction of a benzene ring skeleton and intermolecular incorporation of an alkynyl group in a single reaction using Pd and Cu cooperative catalysts. The method represents efficient access to internal aryl alkynes through divergent functionalization of two terminal alkyne components: one alkyne serves as the one-carbon unit to realize the [5+1] benzannulation and the other alkyne as a nucleophile terminates the reaction.
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Affiliation(s)
- Li-Jun Wu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.
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9
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Wu LJ, Teng F, Lv GF, Li JH. Relay Palladium/Copper Catalysis Enabled Silylative [5 + 1] Benzannulation Using Terminal Alkynes as One-Carbon Units. Org Lett 2020; 22:8544-8549. [PMID: 33075230 DOI: 10.1021/acs.orglett.0c03144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using terminal alkyne as a nontraditional one-carbon (C1) unit and silylborane as an external silicon pronucleophile, a relay palladium/copper-catalyzed silylative [5 + 1] benzannulation of 3-acetoxy-1,4-enynes for producing polysubstituted arylsilanes, especially including bioactive motif-based analogues, in a single reaction step through benzene ring skeleton assembly and silyl intermolecular incorporation cascades is developed. Mechanistic studies show that this reaction allows the terminal sp-hybridized carbon atom in terminal alkynes as a C1 unit via cleavage of two π-bonds and one C(sp)-H bond.
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Affiliation(s)
- Li-Jun Wu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Fan Teng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Gui-Fen Lv
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.,Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University, Changsha 410081, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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10
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Zhou J, Li T, Sun Y, Du B, Tan W, Shi F. Chiral Brønsted Acid‐Catalyzed Asymmetric 1,4‐Addition of Benzofuran‐Derived Azadienes with 3‐Substituted indoles. ChemCatChem 2020. [DOI: 10.1002/cctc.202000810] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ji Zhou
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 R. P. China
| | - Tian‐Zhen Li
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 R. P. China
| | - Yu‐Wen Sun
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 R. P. China
| | - Bai‐Xiang Du
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 R. P. China
| | - Wei Tan
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 R. P. China
| | - Feng Shi
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 R. P. China
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11
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Grabovyi GA, Bhatti A, Mohr JT. Total Synthesis of Benzofuran-Based Aspergillusene B via Halogenative Aromatization of Enones. Org Lett 2020; 22:4196-4200. [PMID: 32437168 DOI: 10.1021/acs.orglett.0c01259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gennadii A. Grabovyi
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Aisha Bhatti
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Justin T. Mohr
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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12
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Zhang L, Cao T, Jiang H, Zhu S. Deconstructive Reorganization: De Novo Synthesis of Hydroxylated Benzofuran. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ling Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
- State Key Laboratory of Elemento-Organic ChemistryNankai University 300071 Tianjing China
- Singfar Laboratories 510670 Guangzhou China
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13
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Ma Z, Zhou M, Ma L, Zhang M. Synthesis of benzofurans from the cyclodehydration of α-phenoxy ketones mediated by Eaton’s reagent. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820907244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Cyclodehydration of α-phenoxy ketones promoted by Eaton’s reagent (phosphorus pentoxide–methanesulfonic acid) is used to prepare 3-substituted or 2,3-disubstituted benzofurans with moderate to excellent yields under mild conditions. The method provides a facile access to benzofurans from readily available starting materials such as phenols and α-bromo ketones. The reaction is highly efficient, which is attributed to the good reactivity and fluidity of Eaton’s reagent. The reaction can be applied to prepare naphthofurans, furanocoumarins, benzothiophenes, and benzopyrans.
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Affiliation(s)
- Zhanwei Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
| | - Min Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
| | - Lin Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
| | - Min Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
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14
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Zhang L, Cao T, Jiang H, Zhu S. Deconstructive Reorganization: De Novo Synthesis of Hydroxylated Benzofuran. Angew Chem Int Ed Engl 2020; 59:4670-4677. [PMID: 31961991 DOI: 10.1002/anie.201915212] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/18/2020] [Indexed: 12/26/2022]
Abstract
An unprecedented deconstructive reorganization strategy for the de novo synthesis of hydroxylated benzofurans from kojic acid- or maltol-derived alkynes is reported. In this reaction, both the benzene and furan rings were simultaneously constructed, whereas the pyrone moiety of the kojic acid or maltol was deconstructed and then reorganized into the benzene ring as a six-carbon component. Through this strategy, at least one free hydroxyl group was introduced into the benzene ring in a substitution-pattern tunable fashion without protection-deprotection and redox adjustment. With this method, a large number of hydroxylated benzofuran derivatives with different substitution-patterns have been prepared efficiently. This methodology has also been shown as the key step in a collective total synthesis of hydroxylated benzofuran-containing natural products (11 examples).
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Affiliation(s)
- Ling Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 300071, Tianjing, China.,Singfar Laboratories, 510670, Guangzhou, China
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15
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Wu LJ, Yang LF, Li JH, Wang QA. Dicarbonylative benzannulation of 3-acetoxy-1,4-enynes with CO and silylboranes by Pd and Cu cooperative catalysis: one-step access to 3-hydroxyarylacylsilanes. Chem Commun (Camb) 2020; 56:1669-1672. [PMID: 31939456 DOI: 10.1039/c9cc09077k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new, general Pd/Cu-cocatalysed dicarbonylative benzannulation of 3-acetoxy-1,4-enynes with CO and silylboranes is described. The method utilizes CO as both a one-carbon (C1) unit and an external addition functional reagent to achieve an unprecedented dicarbonylative benzannulation process, and represents a facile, efficient route to 3-hydroxyarylacylsilanes. Mechanistically, the silyl-Cu intermediate formed from CuF2 and silylboranes, and silyl-Pd intermediate generated by transmetallation are two key factors for successfully targeting the reaction and selectivity.
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Affiliation(s)
- Li-Jun Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
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16
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Nogues C, Argouarch G. Synthesis of dialkoxydiphenylsilanes via the rhodium-catalyzed hydrosilylation of aldehydes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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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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18
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Total synthesis of penta-Me amurensin H and diptoindonesin G featuring a Rh-catalyzed carboacylation/aromatization cascade enabled by C C activation. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.02.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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19
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Singh DK, Prasad SS, Kim J, Kim I. One-pot, three-component approach to diarylacetonitriles. Org Chem Front 2019. [DOI: 10.1039/c8qo01419a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Described herein is a novel one-pot, three-component reaction where aldehydes, electron-rich arenes, and TMSCN in the presence of BF3-OEt2 allowed direct access to a number of diarylacetonitriles under mild reaction conditions in good to excellent yields.
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Affiliation(s)
- Dileep Kumar Singh
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
| | - Sure Siva Prasad
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
| | - Jinhwang Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
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20
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Ma K, Martin BS, Yin X, Dai M. Natural product syntheses via carbonylative cyclizations. Nat Prod Rep 2019; 36:174-219. [PMID: 29923586 DOI: 10.1039/c8np00033f] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review summarizes the application of various transition metal-catalyzed/mediated carbonylative cyclization reactions in natural product total synthesis.
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Affiliation(s)
- Kaiqing Ma
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
| | - Brandon S. Martin
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
| | - Xianglin Yin
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
| | - Mingji Dai
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
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21
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Janardhanan JC, James K, Puthuvakkal A, Bhaskaran RP, Suresh CH, Praveen VK, Manoj N, Babu BP. Synthesis of hybrid polycycles containing fused hydroxy benzofuran and 1H-indazoles via a domino cyclization reaction. NEW J CHEM 2019. [DOI: 10.1039/c9nj01991j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A trifluoroacetic acid mediated [3+2] annulation reaction between 5-hydroxy-1H-indazoles – generated in situ – and p-benzoquinones has been reported.
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Affiliation(s)
- Jith C. Janardhanan
- Department of Applied Chemistry
- Cochin University of Science and Technology (CUSAT)
- Cochin 682022
- India
| | - Kiran James
- Department of Applied Chemistry
- Cochin University of Science and Technology (CUSAT)
- Cochin 682022
- India
| | - Anisha Puthuvakkal
- Chemical Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram 695019
- India
| | - Rasmi P. Bhaskaran
- Department of Chemistry
- National Institute of Technology Karnataka (NITK)
- Surathkal 575025
- India
| | - Cherumuttathu H. Suresh
- Chemical Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram 695019
- India
| | - Vakayil K. Praveen
- Chemical Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram 695019
- India
| | - Narayanapillai Manoj
- Department of Applied Chemistry
- Cochin University of Science and Technology (CUSAT)
- Cochin 682022
- India
| | - Beneesh P. Babu
- Department of Chemistry
- National Institute of Technology Karnataka (NITK)
- Surathkal 575025
- India
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22
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Zhen Q, Huang D, Shao Y, Cheng T, Chen J. Direct halosulfenylation of benzo[b]furans: a metal-free synthesis of 3-halo-2-thiobenzo[b]furans. Org Biomol Chem 2018; 16:9204-9210. [PMID: 30465683 DOI: 10.1039/c8ob02680g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The first example of the direct halosulfenylation of benzo[b]furans with commercially available disulfides and N-halosuccinimides has been achieved, providing an efficient metal-free synthetic pathway to access diverse 3-halo-2-thiobenzo[b]furans in moderate to excellent yields. In particular, a halogen (e.g., bromo or iodo) substituent on the benzo[b]furan ring is amenable for further synthetic elaborations thereby broadening the diversity of the products.
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Affiliation(s)
- Qianqian Zhen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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23
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Kumar A, Saleeb M, Werz D, Elofsson M. Cyclopropylmethyl Protection of Phenols: Total Synthesis of the Resveratrol Dimers Anigopreissin A and Resveratrol-Piceatannol Hybrid. ChemistryOpen 2018; 7:953-956. [PMID: 30524921 PMCID: PMC6276102 DOI: 10.1002/open.201800214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Indexed: 12/11/2022] Open
Abstract
We demonstrate the versatile use of the cyclopropylmethyl group to protect phenols through the total synthesis of two benzofuran-based natural products, that is, anigopreissin A and the resveratrol-piceatannol hybrid. This protecting group is a good alternative to the conventional methyl group, owing to the feasibility of introduction, stability under a variety of conditions, and its relative ease of removal under different acidic conditions.
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Affiliation(s)
- Arvind Kumar
- Department of ChemistryUmeå University90187UmeåSweden
| | | | - Dominik Werz
- Department of ChemistryUmeå University90187UmeåSweden
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24
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Wu L, Song R, Luo S, Li J. Palladium‐Catalyzed Reductive [5+1] Cycloaddition of 3‐Acetoxy‐1,4‐enynes with CO: Access to Phenols Enabled by Hydrosilanes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Li‐Jun Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 China
| | - Ren‐Jie Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 China
| | - Shenglian Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 China
| | - Jin‐Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 China
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26
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Wu L, Song R, Luo S, Li J. Palladium‐Catalyzed Reductive [5+1] Cycloaddition of 3‐Acetoxy‐1,4‐enynes with CO: Access to Phenols Enabled by Hydrosilanes. Angew Chem Int Ed Engl 2018; 57:13308-13312. [DOI: 10.1002/anie.201808388] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Li‐Jun Wu
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 China
| | - Ren‐Jie Song
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 China
| | - Shenglian Luo
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 China
| | - Jin‐Heng Li
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent, Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 China
- State Key Laboratory of Applied Organic ChemistryLanzhou University Lanzhou 730000 China
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27
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Rong MG, Qin TZ, Liu XR, Wang HF, Zi W. De Novo Synthesis of Phenols and Naphthols through Oxidative Cycloaromatization of Dienynes. Org Lett 2018; 20:6289-6293. [DOI: 10.1021/acs.orglett.8b02786] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ming-Guang Rong
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tian-Zhu Qin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin-Rui Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hong-Fa Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Weiwei Zi
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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28
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Singh G, Goswami P, Sharma S, Anand RV. A One-Pot Approach to 2,3-Diarylbenzo[b]furans through N-Heterocyclic Carbene-Catalyzed 1,6-Conjugate Addition Followed by Acid Mediated Dehydrative Annulation. J Org Chem 2018; 83:10546-10554. [DOI: 10.1021/acs.joc.8b01358] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gurdeep Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Prithwish Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Sonam Sharma
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
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29
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Sun T, Zhang Y, Qiu B, Wang Y, Qin Y, Dong G, Xu T. Rhodium(I)-Catalyzed Carboacylation/Aromatization Cascade Initiated by Regioselective C-C Activation of Benzocyclobutenones. Angew Chem Int Ed Engl 2018; 57:2859-2863. [PMID: 29360217 DOI: 10.1002/anie.201713179] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/19/2018] [Indexed: 12/21/2022]
Abstract
Described here is the first example of a rhodium-catalyzed carboacylation/aromatization cascade of a C=O bond by C-C activation. In this transformation, a reactive rhodaindanone complex is regioselectively generated and adds across a C=O bond with subsequent elimination, thus providing a unique strategy to access a multisubstituted benzofuran scaffold. A diverse range of benzofuran analogues were obtained in good yields. Mechanistic studies show a tricyclic lactone was a viable intermediate. Application of this methodology to the total synthesis of C13-deOH-viniferifuran and C13-deOH-diptoindonesin G was achieved.
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Affiliation(s)
- Tianwen Sun
- Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Yuna Zhang
- Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Bo Qiu
- Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Yafei Wang
- Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Yuting Qin
- Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
| | - Tao Xu
- Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
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30
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Sun T, Zhang Y, Qiu B, Wang Y, Qin Y, Dong G, Xu T. Rhodium(I)-Catalyzed Carboacylation/Aromatization Cascade Initiated by Regioselective C−C Activation of Benzocyclobutenones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713179] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tianwen Sun
- Key Laboratory of Marine Drugs Ministry of Education; School of Medicine and Pharmacy, Ocean University of China; Laboratory for Marine Drugs and Bioproducts; Qingdao National Laboratory for Marine Science and Technology; Qingdao 266003 China
| | - Yuna Zhang
- Key Laboratory of Marine Drugs Ministry of Education; School of Medicine and Pharmacy, Ocean University of China; Laboratory for Marine Drugs and Bioproducts; Qingdao National Laboratory for Marine Science and Technology; Qingdao 266003 China
| | - Bo Qiu
- Key Laboratory of Marine Drugs Ministry of Education; School of Medicine and Pharmacy, Ocean University of China; Laboratory for Marine Drugs and Bioproducts; Qingdao National Laboratory for Marine Science and Technology; Qingdao 266003 China
| | - Yafei Wang
- Key Laboratory of Marine Drugs Ministry of Education; School of Medicine and Pharmacy, Ocean University of China; Laboratory for Marine Drugs and Bioproducts; Qingdao National Laboratory for Marine Science and Technology; Qingdao 266003 China
| | - Yuting Qin
- Key Laboratory of Marine Drugs Ministry of Education; School of Medicine and Pharmacy, Ocean University of China; Laboratory for Marine Drugs and Bioproducts; Qingdao National Laboratory for Marine Science and Technology; Qingdao 266003 China
| | - Guangbin Dong
- Department of Chemistry; University of Chicago; Chicago IL 60637 USA
| | - Tao Xu
- Key Laboratory of Marine Drugs Ministry of Education; School of Medicine and Pharmacy, Ocean University of China; Laboratory for Marine Drugs and Bioproducts; Qingdao National Laboratory for Marine Science and Technology; Qingdao 266003 China
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31
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Ao J, Liu Y, Jia S, Xue L, Li D, Tan Y, Qin W, Yan H. Acid-promoted furan annulation and aromatization: An access to benzo[ b ]furan derivatives. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Shoji T, Tanaka M, Takagaki S, Miura K, Ohta A, Sekiguchi R, Ito S, Mori S, Okujima T. Synthesis of azulene-substituted benzofurans and isocoumarins via intramolecular cyclization of 1-ethynylazulenes, and their structural and optical properties. Org Biomol Chem 2018; 16:480-489. [PMID: 29270584 DOI: 10.1039/c7ob02861j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The preparation of azulene-substituted benzofurans and isocoumarins was established by two types of intramolecular cyclization reaction of 1-ethynylazulenes.
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Affiliation(s)
- Taku Shoji
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Miwa Tanaka
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Sho Takagaki
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Kota Miura
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Akira Ohta
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Ryuta Sekiguchi
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Shunji Ito
- Graduate School of Science and Technology
- Hirosaki University
- Hirosaki 036-8561
- Japan
| | - Shigeki Mori
- Advanced Research Support Center
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Tetsuo Okujima
- Department of Chemistry and Biology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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33
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Song W, Blaszczyk SA, Liu J, Wang S, Tang W. Transition metal mediated carbonylative benzannulations. Org Biomol Chem 2017; 15:7490-7504. [DOI: 10.1039/c7ob01000a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review summarizes novel building blocks recently developed for transition metal-catalyzed carbonylative benzannulations.
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Affiliation(s)
- Wangze Song
- School of Pharmacy
- University of Wisconsin-Madison
- Madison
- USA
- School of Pharmaceutical Science and Technology
| | | | - Jitian Liu
- School of Pharmacy
- University of Wisconsin-Madison
- Madison
- USA
| | - Shuojin Wang
- School of Pharmacy
- Hainan Medical University
- Haikou
- China
| | - Weiping Tang
- School of Pharmacy
- University of Wisconsin-Madison
- Madison
- USA
- Department of Chemistry
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