1
|
Zhang X, Chang M, Xu X, Zhao Q. Direct access to furan and cyclopropane derivatives via palladium-catalyzed C-H activation/alkene insertion/annulation. Chem Commun (Camb) 2024; 60:6769-6772. [PMID: 38864642 DOI: 10.1039/d4cc01964d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
A practical and effective palladium-catalyzed C-H activation/alkene insertion/annulation has been reported for the synthesis of furans and cyclopropanes from cyclic 1,3-diketones or 1,3-indandione and diverse alkenes, resulting in moderate to good yields. This protocol demonstrates excellent selectivity and is well-compatible with a wide range of alkene substrates, exhibiting exceptional regioselectivities, high efficiency, and good functional group tolerance.
Collapse
Affiliation(s)
- Xu Zhang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Mengfan Chang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Xuefeng Xu
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Qiang Zhao
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| |
Collapse
|
2
|
Halnor SV, Dhote PS, Ramana CV. Construction of the quinobenzoxazine core via gold-catalyzed dual annulation of azide-tethered alkynones with anthranils. Org Biomol Chem 2023; 21:2127-2137. [PMID: 36794667 DOI: 10.1039/d3ob00098b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
A new catalytic method for the construction of the quinobenzoxazine core has been developed employing the gold-catalyzed cyclization of o-azidoacetylenic ketones in the presence of anthranils. The overall process comprises of a gold-catalyzed 6-endo-dig cyclisation of o-azidoacetylenic ketone leading to a α-imino gold carbene and subsequent carbene transfer to anthranil leading to the 3-aryl-imino-quinoline-4-one intermediate, which undergoes 6π-electrocyclization and aromatization to form the central quinobenzoxazine core. This transformation provides a new approach to a diverse array of quinobenzoxazine structures, in addition to being scalable and having mild reaction conditions.
Collapse
Affiliation(s)
- Swapnil V Halnor
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Pawan S Dhote
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
| | - Chepuri V Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| |
Collapse
|
3
|
Chiral nickel(II) complex catalyzed asymmetric [3 + 2] cycloaddition of α-diazo pyrazoleamides with 2-siloxy-1-alkenes. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
4
|
Sasane AV, Kuo TC, Cheng MJ, Liu RS. Gold-Catalyzed Rearrangement of α-Carbonyl Cyclopropanes to Form 3-(Cyclopenta-1,3-dien-1-ylmethyl)oxindoles via a Postulated 1,5-Enolate Shift. Org Lett 2022; 24:5220-5225. [PMID: 35816021 DOI: 10.1021/acs.orglett.2c02117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Gold-catalyzed stereoselective synthesis of spirocyclopropyl oxindoles from diazooxindoles and 1,2,4-substituted dienes is described. The aim of this work is to report a novel rearrangement of these spirocyclopropyl oxindoles with a gold catalyst to yield 3-(cyclopenta-1,3-dien-1-ylmethyl)oxindoles. Our experimental data exclude a reversible process in the gold-catalyzed cyclopropanation. With DFT calculations, we postulate a rearrangement mechanism involving the formation of complex pairs of gold enolates and 1-methylen-2,3,4-cyclopentadienyl cations, leading to a 1,5-enolate shift.
Collapse
Affiliation(s)
- Amit Vijay Sasane
- Frontier Center for Material Science and Technology and Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan, R.O.C
| | - Tung-Chun Kuo
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan, R.O.C
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan, R.O.C
| | - Rai-Shung Liu
- Frontier Center for Material Science and Technology and Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan, R.O.C
| |
Collapse
|
5
|
Victoria-Miguel J, García-Santos WH, Cordero-Vargas A. A Visible Light Ru-Catalyzed Photoredox Access to Substituted Dihydrofurans. J Org Chem 2022; 87:9088-9099. [PMID: 35737852 DOI: 10.1021/acs.joc.2c00758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient, visible light Ru(bpy)3Cl2-catalyzed method for the preparation of 2,3-dihydrofurans is reported. This approach employs 2-bromoketoesters as radical precursors and alkyl enol ethers as acceptors. The photoredox cycle furnishes an oxonium ion that is captured by an internal nucleophile to render the corresponding dihydrofurans. Moreover, the obtained products contain a versatile acetal moiety at C-2, allowing its transformation into a diverse variety of heteroaromatic and nonaromatic compounds. This method could serve as an important tool in the synthesis of complex tetrahydro- and dihydrofurans as well as heteroaromatic structures.
Collapse
Affiliation(s)
- Jorge Victoria-Miguel
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Coyoacán, Ciudad de México C.P. 04510, Mexico
| | - William H García-Santos
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Coyoacán, Ciudad de México C.P. 04510, Mexico
| | - Alejandro Cordero-Vargas
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Coyoacán, Ciudad de México C.P. 04510, Mexico
| |
Collapse
|
6
|
Singh GS. Synthesis and chemistry of diazo compounds under microwave irradiation: A review. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Girija S. Singh
- University of Botswana Faculty of Science Chemistry Notwane road 0022 Gaborone BOTSWANA
| |
Collapse
|
7
|
Wang WK, Tan HR, Wang NN, Ruan HL, Zhao SY. Copper(I)-Catalyzed Direct Oxidative Annulation of 1,3-Dicarbonyl Compounds with Maleimides: Access to Polysubstituted Dihydrofuran Derivatives. J Org Chem 2022; 87:2711-2720. [PMID: 35018783 DOI: 10.1021/acs.joc.1c02648] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An efficient annulation method for the synthesis of polysubstituted dihydrofurans from 1,3-dicarbonyl compounds and maleimides is described. The reactions can afford furo[2,3-c]pyrrole derivatives with satisfactory yields. The developed strategy realizes the direct oxidative double C(sp3)-H functionalization in the presence of copper(I) salts and 2-(tert-butylperoxy)-2-methylpropane. Meanwhile, this protocol features a mild reaction condition and simple catalytic system. A reaction mechanism involving a single electron oxidation is also proposed.
Collapse
Affiliation(s)
- Wen-Kang Wang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Hong-Ru Tan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Ning-Ning Wang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Hong-Li Ruan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Sheng-Yin Zhao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| |
Collapse
|
8
|
Zhang C, Zhang XQ, Nie Y, Wang C, Xu T, Zhang J, Bai L, Feng C, Wang Y. Gold-catalyzed formal (3 + 2) and (4 + 2) cycloaddition reactions using propiolates: assembly of 2,3-dihydrofurans and 3,4-dihydropyrans via a multistep cascade process. Org Chem Front 2022. [DOI: 10.1039/d2qo01084d] [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 gold-catalyzed formal dipolar cycloaddition reaction was developed using polarized alkynes as dipolarophiles and butenediol or pentenediol derivatives as formal dipoles. Silyl groups were used to solve the selectivity issue of unsymmetrical diols.
Collapse
Affiliation(s)
- Congdi Zhang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Xiao-Qian Zhang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Yu Nie
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Chao Wang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Tianyi Xu
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Junjie Zhang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Lu Bai
- Instrumental Analysis Center, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi, 710049, P.R. China
| | - Chao Feng
- Instrumental Analysis Center, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi, 710049, P.R. China
| | - Youliang Wang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| |
Collapse
|
9
|
Guerra Faura G, Nguyen T, France S. Catalyst-Controlled Chemodivergent Reactions of 2-Pyrrolyl-α-diazo-β-ketoesters and Enol Ethers: Synthesis of 1,2-Dihydrofuran Acetals and Highly Substituted Indoles. J Org Chem 2021; 86:10088-10104. [PMID: 34259515 DOI: 10.1021/acs.joc.1c00826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A catalyst-controlled, chemodivergent reaction of pyrrolyl-α-diazo-β-ketoesters with enol ethers is reported. While Cu(II) catalysts selectively promoted a [3 + 2] cycloaddition to provide pyrrolyl-substituted 2,3-dihydrofuran (DHF) acetals, dimeric Rh(II) catalysts afforded 6-hydroxyindole-7-carboxylates via an unreported [4 + 2] benzannulation. The choice of enol ether proved to be crucial in determining both regioselectivity and yield of the respective products (up to 91% yield for Cu(II) and 82% for Rh(II) catalysis). Furthermore, the DHF acetals were shown to serve as precursors to 7-hydroxyindole-6-carboxylates (isomeric to the indoles formed from Rh) and highly substituted furans in the presence of Lewis acids. Thus, from a common pyrrolyl-α-diazo-β-ketoester, up to three unique heterocyclic scaffolds can be achieved based on catalyst selection.
Collapse
Affiliation(s)
- Gabriel Guerra Faura
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Tena Nguyen
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Stefan France
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| |
Collapse
|
10
|
Ahmad SAZ, Jena TK, Khan FA. Alkyl Enol Ethers: Development in Intermolecular Organic Transformation. Chem Asian J 2021; 16:1685-1702. [PMID: 33979009 DOI: 10.1002/asia.202100277] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/27/2021] [Indexed: 01/03/2023]
Abstract
Alkyl enol ethers (AEE) are versatile synthetic intermediates with a unique reactivity pattern. This review article summarizes the synthesis of AEE as well as its reactivity and how enol ether undergoes intermolecular reactions for various bond formation, leading to the construction of several useful organic molecules. The synthetic applications of alkyl enol ethers towards intermolecular bond-forming reactions include metal-catalyzed reactions, cycloaddition and heterocycle formation as well as rwactions in the field of natural products synthesis. The achievement of these impressive transformations prove the countless synthetic potential of AEE. The main objective of this review is to bring attentiveness among synthetic chemists to show how AEE extensively can be used to react with both electrophiles as well as nucleophiles, thereby behaving as an ambiphilic reactant. We trust that the unique reactivity pattern of alkyl enol ethers and the fundamental mechanistic idea can attract chemists in AEE chemistry. Exclusively, intermolecular reactions of AEE with other functionalized moieties have not been reviewed to the best of our knowledge.
Collapse
Affiliation(s)
- Sarwat Asma Ziya Ahmad
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502285, India
| | - Tapan Kumar Jena
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502285, India
| | - Faiz Ahmed Khan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502285, India
| |
Collapse
|
11
|
Quintavalla A, Veronesi R, Carboni D, Martinelli A, Zaccheroni N, Mummolo L, Lombardo M. Chemodivergent Photocatalytic Synthesis of Dihydrofurans and β,γ‐Unsaturated Ketones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100260] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Davide Carboni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ada Martinelli
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Nelsi Zaccheroni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Liviana Mummolo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
12
|
Doerksen RS, Hodík T, Hu G, Huynh NO, Shuler WG, Krische MJ. Ruthenium-Catalyzed Cycloadditions to Form Five-, Six-, and Seven-Membered Rings. Chem Rev 2021; 121:4045-4083. [PMID: 33576620 DOI: 10.1021/acs.chemrev.0c01133] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ruthenium-catalyzed cycloadditions to form five-, six-, and seven-membered rings are summarized, including applications in natural product total synthesis. Content is organized by ring size and reaction type. Coverage is limited to processes that involve formation of at least one C-C bond. Processes that are stoichiometric in ruthenium or exploit ruthenium as a Lewis acid (without intervention of organometallic intermediates), ring formations that occur through dehydrogenative condensation-reduction, σ-bond activation-initiated annulations that do not result in net reduction of bond multiplicity, and photochemically promoted ruthenium-catalyzed cycloadditions are not covered.
Collapse
Affiliation(s)
- Rosalie S Doerksen
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Tomáš Hodík
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Guanyu Hu
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Nancy O Huynh
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - William G Shuler
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| |
Collapse
|
13
|
Chen C, Cheng W, Wang J, Chao T, Cheng M, Liu R. Gold‐Catalyzed [3+2]‐Annulations of α‐Aryl Diazoketones with the Tetrasubstituted Alkenes of Cyclopentadienes: High Stereoselectivity and Enantioselectivity. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012611] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ching‐Nung Chen
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| | - Wei‐Min Cheng
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| | - Jian‐Kai Wang
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| | - Tzu‐Hsuan Chao
- Department of Chemistry National Cheng Kung University East District Tainan City Taiwan, ROC
| | - Mu‐Jeng Cheng
- Department of Chemistry National Cheng Kung University East District Tainan City Taiwan, ROC
| | - Rai‐Shung Liu
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| |
Collapse
|
14
|
Chen C, Cheng W, Wang J, Chao T, Cheng M, Liu R. Gold‐Catalyzed [3+2]‐Annulations of α‐Aryl Diazoketones with the Tetrasubstituted Alkenes of Cyclopentadienes: High Stereoselectivity and Enantioselectivity. Angew Chem Int Ed Engl 2021; 60:4479-4484. [DOI: 10.1002/anie.202012611] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/18/2020] [Indexed: 01/14/2023]
Affiliation(s)
- Ching‐Nung Chen
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| | - Wei‐Min Cheng
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| | - Jian‐Kai Wang
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| | - Tzu‐Hsuan Chao
- Department of Chemistry National Cheng Kung University East District Tainan City Taiwan, ROC
| | - Mu‐Jeng Cheng
- Department of Chemistry National Cheng Kung University East District Tainan City Taiwan, ROC
| | - Rai‐Shung Liu
- Frontier Research Center for Matter Science and Technology and Department of Chemistry National Tsing-Hua University Hsinchu Taiwan, ROC
| |
Collapse
|
15
|
Regioselective synthesis of spirobarbiturate-dihydrofurans and dihydrofuro[2,3-d]pyrimidines via one-pot cascade reaction of barbiturate-based olefins and ethyl acetoacetate. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
16
|
Mamedov VA, Zamaletdinova AI, Syakaev VV, Khafizova EA, Latypov SK, Sinyashin OG. Rearrangement in the systems ethyl bromopyruvate-1-(cyclohex-1-enyl)piperidine, -pyrrolidine, and -morpholine as an effi cient approach to 4,5,6,7-tetrahydroindoles. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2512-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
17
|
Yan X, Shao P, Song X, Zhang C, Lu C, Liu S, Li Y. Chemoselective syntheses of spirodihydrofuryl and spirocyclopropyl barbiturates via cascade reactions of barbiturate-based olefins and acetylacetone. Org Biomol Chem 2019; 17:2684-2690. [PMID: 30768085 DOI: 10.1039/c9ob00004f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Michael addition initiated ring closure reaction of barbiturate-based olefins and acetylacetone with NBS has been explored. The efficient and chemoselective approach for the synthesis of barbiturate-fused spirocycles was established. Spirodihydrofuryl barbiturates and spirocyclopropyl barbiturates were synthesized selectively via cascade reactions under different basic conditions in moderate to excellent yields. The structure of 2-(4-chlorophenyl)-1,1-diacetyl-5,7-dimethyl-5,7-diazaspiro[2,5]octane-4,6,8-trione was confirmed by single crystal X-ray diffraction analysis.
Collapse
Affiliation(s)
- Xuebin Yan
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
18
|
Thombal RS, Kim ST, Baik MH, Lee YR. Ruthenium catalyzes the synthesis of γ-butenolides fused with cyclohexanones. Chem Commun (Camb) 2019; 55:2940-2943. [DOI: 10.1039/c9cc00101h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combined experimental and computational study for Ru(ii)-catalyzed reactions of cyclic diazodicarbonyl compounds with β-ketoamides for cyclohexanone-fused γ-butenolides is described.
Collapse
Affiliation(s)
- Raju S. Thombal
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Seoung-Tae Kim
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Mu-Hyun Baik
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| |
Collapse
|
19
|
Du Y, Xue W, Gao R, Gu Y, Han L. [4+2] Annulation of 3-(2,2-diethoxyethyl)-1,3-dicarbonyl compounds with indoles catalyzed by Brønsted acid ionic liquid for the synthesis of carbazoles. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
Park GE, Maezono SMB, Ha JH, Shim JJ, Kim SH, Lee YR. Transition-Metal-Free Regioselective Construction of Diverse 3-Carbonyl Functionalized 4-PyronesviaThermal Wolff-Rearrangement of Diazodicarbonyls. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ga Eul Park
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | | | - Ji Hyeon Ha
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | - Jae-Jin Shim
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division; Daegu Center; Korea Basic Science Institute; Daegu 41566 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| |
Collapse
|
21
|
Oost R, Neuhaus JD, Misale A, Meyrelles R, Veiros LF, Maulide N. Catalyst-dependent selectivity in sulfonium ylide cycloisomerization reactions. Chem Sci 2018; 9:7091-7095. [PMID: 30310629 PMCID: PMC6137435 DOI: 10.1039/c8sc02815j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022] Open
Abstract
Divergent catalysis is an emerging field whereby access to structurally diverse compounds from a common precursor is achieved through controlled reaction pathways. Herein we present an unusual example of π-acid catalyst dependent selectivity in the cycloisomerization of alkene-tethered sulfonium ylides. Computational mechanistic studies revealed how the ability of palladium to cycle through oxidation states largely controls the selectivity.
Collapse
Affiliation(s)
- Rik Oost
- University of Vienna , Institute of Organic Chemistry , Währinger Straße 38 , 1090 Vienna , Austria .
| | - James D Neuhaus
- University of Vienna , Institute of Organic Chemistry , Währinger Straße 38 , 1090 Vienna , Austria .
| | - Antonio Misale
- University of Vienna , Institute of Organic Chemistry , Währinger Straße 38 , 1090 Vienna , Austria .
| | - Ricardo Meyrelles
- Universidade de Lisboa , Centro de Química Estrutural , Instituto Superior Técnico , Av. Rovisco Pais 1 , 1049-001 Lisbon , Portugal
| | - Luís F Veiros
- Universidade de Lisboa , Centro de Química Estrutural , Instituto Superior Técnico , Av. Rovisco Pais 1 , 1049-001 Lisbon , Portugal
| | - Nuno Maulide
- University of Vienna , Institute of Organic Chemistry , Währinger Straße 38 , 1090 Vienna , Austria .
| |
Collapse
|
22
|
Wu F, Huang W, Yiliqi, Yang J, Gu Y. Relay Catalysis of Bismuth Trichloride and Byproduct Hydrogen Bromide Enables the Synthesis of Carbazole and Benzo[α]carbazoles from Indoles and α-Bromoacetaldehyde Acetals. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800669] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Fengtian Wu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; HuazhongUniversity of Science and Technology; 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Wenbo Huang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; HuazhongUniversity of Science and Technology; 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Yiliqi
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; HuazhongUniversity of Science and Technology; 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Jian Yang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; HuazhongUniversity of Science and Technology; 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; HuazhongUniversity of Science and Technology; 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; Lanzhou 730000 People's Republic of China
| |
Collapse
|
23
|
Somai Magar KB, Edison TNJI, Lee YR. Regioselective Construction of Functionalized Biarylols by Fe(OTf)3
-Catalyzed Direct Arylation of 1-Diazonaphthalen-2(1H
)-ones and Their Fluorescence Properties. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701533] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - T. N. J. I. Edison
- School of Chemical Engineering; Yeungnam University; 38541 Gyeongsan Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; 38541 Gyeongsan Republic of Korea
| |
Collapse
|
24
|
Dey S, De Sarkar S. Synthetic Applications of Vinyl Ruthenium Carbenes Derived from Diazoalkanes and Alkynes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700622] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Soumen Dey
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 West Bengal India
| | - Suman De Sarkar
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 West Bengal India
| |
Collapse
|
25
|
Faisal S, Zang Q, Maity PK, Brandhofer A, Kearney PC, Reiser O, Grass RN, Stoianova D, Hanson PR. Development and Application of a Recyclable High-Load Magnetic Co/C Hybrid ROMP-Derived Benzenesulfonyl Chloride Reagent and Utility of Corresponding Analogues. Org Lett 2017; 19:2274-2277. [PMID: 28437113 DOI: 10.1021/acs.orglett.7b00792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The development and application of high-load, recyclable magnetic Co/C hybrid ROMP-derived benzenesulfonyl chloride and analogues is reported. The regeneration and utility of these reagents in the methylation/alkylation of various carboxylic acids is demonstrated via efficient retrieval of the magnetic reagent with a neodymium magnet. Additional reactions employing the analogue sulfonic acid and in situ generated magnetic benzenesulfonyl azide are also reported.
Collapse
Affiliation(s)
- Saqib Faisal
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States.,The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD) , 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Qin Zang
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States.,The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD) , 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Pradip K Maity
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States.,The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD) , 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Agnes Brandhofer
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States.,The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD) , 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States.,Institute for Organic Chemistry, University of Regensburg , Universitatsstrasse 31, 93053 Regensburg, Germany
| | | | - Oliver Reiser
- Institute for Organic Chemistry, University of Regensburg , Universitatsstrasse 31, 93053 Regensburg, Germany
| | - Robert N Grass
- Institute for Chemical and Bioengineering , Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Diana Stoianova
- Materia, Inc., 60 North San Gabriel Boulevard, Pasadena, California 91107, United States
| | - Paul R Hanson
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States.,The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD) , 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| |
Collapse
|
26
|
Jia Z, Wang K, Tan B, Gu Y. Ruthenium Complexes Immobilized on Functionalized Knitted Hypercrosslinked Polymers as Efficient and Recyclable Catalysts for Organic Transformations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600816] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhifang Jia
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
- Department of Chemistry and Chemical Engineering; Shanxi Datong University; Datong 037009 People's Republic of China
| | - Kewei Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
- Department of Chemistry and Chemical Engineering; Shanxi Datong University; Datong 037009 People's Republic of China
| | - Bien Tan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; Lanzhou 730000 People's Republic of China
| |
Collapse
|
27
|
Pandit RP, Kim SH, Lee YR. Iron-Catalyzed Annulation of 1,2-Diamines and Diazodicarbonyls for Diverse and Polyfunctionalized Quinoxalines, Pyrazines, and Benzoquinoxalines in Water. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600503] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Sung Hong Kim
- Analysis Research Division, Daegu Center, Korea; Basic Science Institute; Daegu 702-701 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| |
Collapse
|
28
|
Ravichandiran P, Lai B, Gu Y. Aldo-X Bifunctional Building Blocks for the Synthesis of Heterocycles. CHEM REC 2016; 17:142-183. [DOI: 10.1002/tcr.201600042] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Palanisamy Ravichandiran
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Bingbing Lai
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; Lanzhou 730000 P.R. China
| |
Collapse
|
29
|
Yun SH, Xia L, Kim SH, Lee YR. Rh(II)-Catalyzed Chemoselective Synthesis of 3-Substituted Oxindoles by C(sp2)−H and C(sp2)−N Functionalization of β-Enaminoesters. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sang Hyeon Yun
- School of Chemical Engineering; Yeungnam University; 214-1 Dae-dong Gyeongsan 712-749 Republic of Korea
| | - Likai Xia
- School of Chemical Engineering; Yeungnam University; 214-1 Dae-dong Gyeongsan 712-749 Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division; Daegu Center; Korea Basic Science Institute; Daegu 702-701 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; 214-1 Dae-dong Gyeongsan 712-749 Republic of Korea
| |
Collapse
|
30
|
Tan WW, Yoshikai N. Copper-Catalyzed Coupling of 2-Siloxy-1-alkenes and Diazocarbonyl Compounds: Approach to Multisubstituted Furans, Pyrroles, and Thiophenes. J Org Chem 2016; 81:5566-73. [DOI: 10.1021/acs.joc.6b00904] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Wen Tan
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| |
Collapse
|
31
|
Zhou Y, Zhu FL, Liu ZT, Zhou XM, Hu XP. Chiral Ferrocenyl P,N-Ligands for Palladium-Catalyzed Asymmetric Formal [3 + 2] Cycloaddition of Propargylic Esters with β-Ketoesters: Access to Functionalized Chiral 2,3-Dihydrofurans. Org Lett 2016; 18:2734-7. [DOI: 10.1021/acs.orglett.6b01192] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yong Zhou
- Biotechnology
Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Collaborative Innovation
Center for Field Weeds Control, Hunan Loudi 417000, China
| | - Fu-Lin Zhu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhen-Ting Liu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiao-Mao Zhou
- Biotechnology
Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Collaborative Innovation
Center for Field Weeds Control, Hunan Loudi 417000, China
| | - Xiang-Ping Hu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| |
Collapse
|
32
|
Liu C, Zhou L, Huang W, Wang M, Gu Y. Synthesis of Furans and Pyrroles from 2-Alkoxy-2,3-dihydrofurans Through a Nucleophilic Substitution-Triggered Heteroaromatization. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500993] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
33
|
Shrestha R, Lee GJ, Lee YR. Synthesis of diverse isatins via ring contraction of 3-diazoquinoline-2,4-diones. RSC Adv 2016. [DOI: 10.1039/c6ra13585d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
An efficient protocol for the construction of diverse isatin derivatives was developed starting from 3-diazoquinoline-2,4-diones via ring contraction reaction.
Collapse
Affiliation(s)
- Rajeev Shrestha
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Gun Joon Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| |
Collapse
|
34
|
Wang Y, Han J, Chen J, Cao W. Transition metal-free generation of the acceptor/acceptor-carbene via α-elimination: synthesis of fluoroacetyl cyclopropanes. Chem Commun (Camb) 2016; 52:6817-20. [DOI: 10.1039/c6cc01576j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient transition metal-free approach for the generation of acceptor/acceptor-carbene followed by trapping with alkenes to provide fluoroacetyl cyclopropanes has been described. The resulting cyclopropanes could be further converted into the fluoromethyl dihydrofurans or fluorodihydropyrroles through ring-expansion processes.
Collapse
Affiliation(s)
- Yongdong Wang
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jing Han
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jie Chen
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Weiguo Cao
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
- Department of Chemistry
| |
Collapse
|
35
|
Khanal HD, Kim SH, Lee YR. Rhodium(ii)-catalyzed direct sulfenylation of diazooxindoles with disulfides. RSC Adv 2016. [DOI: 10.1039/c6ra12393g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Rhodium(ii)-catalyzed reactions for direct sulfenylation of diazooxindoles with disulfides via C–S bond formation was developed.
Collapse
Affiliation(s)
- Hari Datta Khanal
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division
- Daegu Center
- Korea Basic Science Institute
- Daegu 702-701
- Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| |
Collapse
|
36
|
Somai Magar KB, Edison TNJI, Lee YR. Regioselective synthesis of 3-anthracenyloxindoles and 3-carbazolyloxindoles by indium(iii)-catalyzed direct arylation and their fluorescent chemosensor properties. Org Biomol Chem 2016; 14:7313-23. [DOI: 10.1039/c6ob01315e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An efficient protocol for diverse 3-anthracenyloxindoles and 3-carbazolyloxindoles has been developed by In(OTf)3-catalyzed direct arylation of 3-diazooxindoles with anthracenes or carbazoles.
Collapse
Affiliation(s)
| | | | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- 38541 Gyeongsan
- Republic of Korea
| |
Collapse
|
37
|
Tortoreto C, Achard T, Egger L, Guénée L, Lacour J. Synthesis of Spiro Ketals, Orthoesters, and Orthocarbonates by CpRu-Catalyzed Decomposition of α-Diazo-β-ketoesters. Org Lett 2015; 18:240-3. [DOI: 10.1021/acs.orglett.5b03380] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cecilia Tortoreto
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Thierry Achard
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Léo Egger
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Laure Guénée
- Laboratory
of Crystallography, University of Geneva, Quai Ernest Ansermet 24, CH-1211 Geneva 4, Switzerland
| | - Jérôme Lacour
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| |
Collapse
|
38
|
Baral ER, Lee YR, Kim SH. 3-Naphthylindole Construction by Rhodium(II)-Catalyzed Regioselective Direct Arylation of Indoles with 1-Diazonaphthalen-2-(1H)-ones. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500209] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
39
|
Xia L, Idhayadhulla A, Lee YR. Re2O7-catalyzed formal [3 + 2] cycloaddition for diverse naphtho[1,2-b]furan-3-carboxamides and their biological evaluation. Mol Divers 2015; 20:17-28. [PMID: 26260267 DOI: 10.1007/s11030-015-9630-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/02/2015] [Indexed: 10/23/2022]
Abstract
Diverse naphtho[1,2-b]furan-3-carboxamide derivatives 12a-12q were synthesized in high yield via the novel Re2O7-catalyzed formal [3 + 2] cycloaddition of 1,4-naphthoquinones with β-ketoamides as the key step. This methodology offers several advantages, such as environmentally benign character, the use of a mild catalyst, high yields, and ease of handling. The synthesized compounds were screened for their tyrosinase inhibitory, antioxidant, and antibacterial activities. The results showed that compound 12c exhibited excellent tyrosinase inhibitory activity with an IC50 of 13.48 μg/mL, which is comparable to that of kojic acid (IC50 = 19.45 μg/mL). Compounds 12a, 12b, and 12i displayed moderate antioxidant activities in a DPPH assay. Compound 12m showed good activity against S. aureus (MIC = 16 μg/mL), and compound 12p was found to be active against E. coli (MIC = 16 μg/mL).
Collapse
Affiliation(s)
- Likai Xia
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea
| | - Akber Idhayadhulla
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea.
| |
Collapse
|
40
|
Construction of Multifunctionalized Azopyrazoles by Silver- Catalyzed Cascade Reaction of Diazo Compounds. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500197] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
41
|
Nambu H, Fukumoto M, Hirota W, Ono N, Yakura T. An efficient synthesis of cycloalkane-1,3-dione-2-spirocyclopropanes from 1,3-cycloalkanediones using (1-aryl-2-bromoethyl)-dimethylsulfonium bromides: application to a one-pot synthesis of tetrahydroindol-4(5H)-one. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.069] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
42
|
The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2013. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
43
|
Xia L, Idhayadhulla A, Lee YR, Kim SH, Wee YJ. Synthesis and biological evaluation of diverse tetrahydrobenzofuran-4-ones as potent antibacterial agents. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.07.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
44
|
Ebrahimi A, Heydari A, Esrafili A. Maghemite Supported Copper Oxide Nanocatalyst for the N–H Insertion Reaction with Ethyl Diazoacetate. Catal Letters 2014. [DOI: 10.1007/s10562-014-1391-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
45
|
One-step synthesis of tetrahydroindoles by ceric(IV) ammonium nitrate-promoted oxidative cycloaddition of enaminones and vinyl ethers. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
46
|
Somai Magar KB, Lee YR. Ruthenium(II)-Catalyzed Protocol for Preparation of Diverse α,β- and β,β-Dihaloenones from Diazodicarbonyls. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400348] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
47
|
Zhu FL, Wang YH, Zhang DY, Xu J, Hu XP. Enantioselective Synthesis of Highly Functionalized Dihydrofurans through Copper-Catalyzed Asymmetric Formal [3+2] Cycloaddition of β-Ketoesters with Propargylic Esters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405857] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
48
|
Zhu FL, Wang YH, Zhang DY, Xu J, Hu XP. Enantioselective Synthesis of Highly Functionalized Dihydrofurans through Copper-Catalyzed Asymmetric Formal [3+2] Cycloaddition of β-Ketoesters with Propargylic Esters. Angew Chem Int Ed Engl 2014; 53:10223-7. [DOI: 10.1002/anie.201405857] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/17/2014] [Indexed: 11/09/2022]
|
49
|
Xia L, Idhayadhulla A, Lee YR, Kim SH, Wee YJ. Microwave-assisted synthesis of diverse pyrrolo[3,4-c]quinoline-1,3-diones and their antibacterial activities. ACS COMBINATORIAL SCIENCE 2014; 16:333-41. [PMID: 24749663 DOI: 10.1021/co500002s] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
With the aim of developing a general and practical method for library production, a novel and efficient two-phase microwave-assisted cascade reaction between isatins and β-ketoamides in [Bmim]BF4/toluene was developed for the synthesis of pyrrolo[3,4-c]quinoline-1,3-diones. The features of this methodology are, the use of microwave-assisted rapid synthesis, mild reaction conditions, high yields, operational simplicity, facile product separation, and recyclability. Furthermore, the antibacterial activities of the pyrrolo[3,4-c]quinoline-1,3-dione derivatives produced were evaluated against Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, and Enterobacter aerogenes) and Gram-positive bacteria (Bacillus cereus and Staphylococcus aureus). These derivatives showed antibacterial activities against Gram-positive strains that were at least equivalent to that against Gram-negative strains. Compound 7{3,5} displayed the most potent antibacterial activity against P. aeruginosa (MIC = 0.5 μg/mL) and greater activity than standard ampicillin (MIC = 1 μg/mL). Compound 7{4,7} exhibited the best inhibitory activity against E. coli and E. aerogenes (MIC = 1 and 0.5 μg/mL), compared with the standard ampicillin (both MICs = 1 μg/mL). The synthesized pyrrolo[3,4-c]quinoline-1,3-diones are expected to be widely used as lead compounds for the development of new antibacterial agents.
Collapse
Affiliation(s)
- Likai Xia
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Akber Idhayadhulla
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Yong Rok Lee
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Sung Hong Kim
- Analysis
Research Division, Daegu Center, Korea Basic Science Institute, Daegu 702-701, Republic of Korea
| | - Young-Jung Wee
- Department
of Food Science and Technology, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| |
Collapse
|
50
|
Neupane P, Xia L, Lee YR. One-Pot Synthesis of Multi-Substituted 4-Pyrones by a Gold- Catalyzed Cascade of Wolff Rearrangement/[4+2] Cycloaddition/ Elimination Reactions. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301086] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|