1
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Feng M, Huang B, Jiang H, Huang L. Synthesis of γ-Thiapyrones by Diels-Alder/Retro-Diels-Alder Reaction of α-Pyrones with 5- H-1,2,3-Thiadiazoles. J Org Chem 2024; 89:5846-5850. [PMID: 38584435 DOI: 10.1021/acs.joc.3c02889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
The efficient synthesis of γ-thiapyrones by a base-mediated Diels-Alder/retro-Diels-Alder reaction of α-pyrones with 5-H-1,2,3-thiadiazoles is reported herein. Thioketenes in situ generated from thiadiazoles as electron-poor dienophile and electron-rich 4-hydroxy-2-pyrones as dienes are conjunctively transformed into a series of γ-thiapyrones with broad functional group compatibility in good to excellent yields (35 examples, 67% average yield).
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Affiliation(s)
- Mengxia Feng
- State Key Laboratory of Pulp and Paper Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Bin Huang
- State Key Laboratory of Pulp and Paper Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- State Key Laboratory of Pulp and Paper Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Liangbin Huang
- State Key Laboratory of Pulp and Paper Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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2
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Liyanage Perera E, Wink DJ, Luo Y, Xia Y, Lee D. Cyclization Reactions of In Situ-Generated Acyl Ketene with Ynones to Form Oxacycles. J Org Chem 2024; 89:4496-4502. [PMID: 38506399 DOI: 10.1021/acs.joc.3c02711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Acyl ketenes react with polar unsaturated functional groups to give unique heterocyclic rings, yet reactions with unpolarized unsaturated functional groups have not been reported. Herein, we describe two effective ring-forming reactions between acetyl ketene and electron-deficient alkynes. The first reaction involves in situ tethering between acetyl ketene and nucleophile-containing 1,3-diynones, which promotes sequential intramolecular 1,6/1,4-additions to generate 2-methylene-2H-pyrans in various yields (24-91%). The other involves a zwitterionic intermediate generated from acetyl ketene and DABCO, which undergoes a Michael addition with terminal alkynyl ketones to generate 3-acyl-4-pyrones (11-79%).
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Affiliation(s)
- Erandi Liyanage Perera
- Department of Chemistry, University of Illinois Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Donald J Wink
- Department of Chemistry, University of Illinois Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Yanshu Luo
- College of Chemistry and Materials Engineering, Wenzhou University, 325035 Wenzhou, Zhejiang, P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, 325035 Wenzhou, Zhejiang, P. R. China
| | - Daesung Lee
- Department of Chemistry, University of Illinois Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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3
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Salthouse R, Hurtado-Gallego J, Grace IM, Davidson R, Alshammari O, Agraït N, Lambert CJ, Bryce MR. Electronic Conductance and Thermopower of Cross-Conjugated and Skipped-Conjugated Molecules in Single-Molecule Junctions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:13751-13758. [PMID: 37528901 PMCID: PMC10389811 DOI: 10.1021/acs.jpcc.3c00742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/21/2023] [Indexed: 08/03/2023]
Abstract
We report a combined experimental and theoretical study of a series of thiomethyl (SMe) anchored cross-conjugated molecules featuring an acyclic central bridging ketone and their analogous skipped-conjugated alcohol derivatives. Studies of these molecules in a gold|single-molecule|gold junction using scanning tunneling microscopy-break junction techniques reveal a similar conductance (G) value for both the cross-conjugated molecules and their skipped-conjugated partners. Theoretical studies based on density functional theory of the molecules in their optimum geometries in the junction reveal the reason for this similarity in conductance, as the predicted conductance for the alcohol series of compounds varies more with the tilt angle. Thermopower measurements reveal a higher Seebeck coefficient (S) for the cross-conjugated ketone molecules relative to the alcohol derivatives, with a particularly high S for the biphenyl derivative 3a (-15.6 μV/K), an increase of threefold compared to its alcohol analog. The predicted behavior of the quantum interference (QI) in this series of cross-conjugated molecules is found to be constructive, though the appearance of a destructive QI feature for 3a is due to the degeneracy of the HOMO orbital and may explain the enhancement of the value of S for this molecule.
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Affiliation(s)
| | - Juan Hurtado-Gallego
- Departamento
de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid E-28049, Spain
| | - Iain M. Grace
- Physics
Department, Lancaster University, Lancaster LA1 4YB, U.K.
| | - Ross Davidson
- Department
of Chemistry, Durham University, Durham DH1 3LE, U.K.
| | - Ohud Alshammari
- Physics
Department, Lancaster University, Lancaster LA1 4YB, U.K.
| | - Nicolás Agraït
- Departamento
de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid E-28049, Spain
- Condensed
Matter Physics Center (IFIMAC) and Instituto Universitatio de Ciencia
de Materiales “Nicolás Cabrera” (INC), Universidad Autónoma de Madrid, Madrid E-28049, Spain
- Instituto
Madrileño de Estudios Avanzados en Nanociencia IMDEA-Nanociencia, Madrid E-28049, Spain
| | - Colin J. Lambert
- Physics
Department, Lancaster University, Lancaster LA1 4YB, U.K.
| | - Martin R. Bryce
- Department
of Chemistry, Durham University, Durham DH1 3LE, U.K.
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4
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Cao TY, Qi L, Wang LJ. Switchable Regioselective 7- endo or 6- exo Iodocyclization of O-Homoallyl Benzimidates. J Org Chem 2023. [PMID: 36757344 DOI: 10.1021/acs.joc.2c02729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
We present a facile switchable regioselective 7-endo or 6-exo iodocyclization of O-homoallyl benzimidates here, which affords various iodo-substituted 1,3-oxazines and tetrahydro-1,3-oxazepines in a controllable manner. The products can further undergo substitution reactions to afford a series of rich functionalized target heterocyclic molecules. The developed protocol has the advantages of mild conditions, simple operation, and excellent functional group compatibility.
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Affiliation(s)
- Tong-Yang Cao
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Lin Qi
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
| | - Li-Jing Wang
- College of Chemistry & Environmental Science, Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China
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5
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Liyanage Perera E, Lee D. Synthesis of 4-Pyrones by Formal Hydration of 1,3-Diynones Promoted by 1,4-Addition of Piperidine. Org Lett 2022; 24:7042-7046. [PMID: 36125167 DOI: 10.1021/acs.orglett.2c02914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new approach for the synthesis of 4-pyrones with broader substrate scope and functional group tolerance is described. The reaction proceeds via an initial 1,4-addition by piperidine, followed by nitrogen-assisted 6-endo-dig cyclization and hydrolysis. 1,3-Diynones with nonenolizable electron-withdrawing ketones and nonpropargylic H provide relatively high yields. For substrates with particular R2 substituents, 1,4- or 1,6-adducts were isolated, suggesting that steric and electronic factors of the R2 substituent should have a strong impact on the 6-endo-dig cyclization.
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Affiliation(s)
- Erandi Liyanage Perera
- Department of Chemistry, University of Illinois─Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois─Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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6
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Zantioti-Chatzouda EM, Kotzabasaki V, Stratakis M. Synthesis of γ-Pyrones and N-Methyl-4-pyridones via the Au Nanoparticle-Catalyzed Cyclization of Skipped Diynones in the Presence of Water or Aqueous Methylamine. J Org Chem 2022; 87:8525-8533. [PMID: 35679874 DOI: 10.1021/acs.joc.2c00627] [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
Supported Au nanoparticles on TiO2 catalyze the hydration/6-endo cyclization of skipped diynones to γ-pyrones in aqueous dioxane, via triple bond activation. The isomeric 3(2H)-furanones which could be formed through a competing and often prevailing 5-exo cyclization pathway using homogeneous ionic Au(I) catalysts were not seen. The reaction does not proceed via the initial 1,3-transposition of the skipped diynones to their corresponding conjugated 1,3-diynone isomers. If aqueous methylamine is added, N-methyl-4-pyridones are exclusively formed in 69-79% yields via an analogous hydroamination/Au-catalyzed 6-endo cyclization pathway.
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Affiliation(s)
| | | | - Manolis Stratakis
- Department of Chemistry, University of Crete, Voutes, 71003 Heraklion, Greece
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7
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Sarma MJ, Jindani S, Ganguly B, Pabbaraja S, Mehta G. Tandem Michael- anti-Michael Addition-Mediated Orthogonal Strapping of Diynones: Regioselective Spirocyclopentannulation of Oxindoles and Pyrazolones and DFT Validation. J Org Chem 2021; 87:884-891. [PMID: 34941241 DOI: 10.1021/acs.joc.1c02667] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient protocol involving the transformation of sequentially generated recursive anions from heterocyclic precursors to orthogonally strap diynones through one pot transition-metal-free spirocyclopentannulation has been devised, employing oxindoles and pyrazolones as prototypical platforms. Insights into these regioselective tandem Michael-anti-Michael processes have been gleaned through DFT calculations.
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Affiliation(s)
- Manas Jyoti Sarma
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India.,Department of Organic Synthesis and Process Chemistry, CSIR─Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Sana Jindani
- Computation and Simulation Unit, Analytical Discipline and Centralized Instrumentation Facility, CSIR─Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
| | - Bishwajit Ganguly
- Computation and Simulation Unit, Analytical Discipline and Centralized Instrumentation Facility, CSIR─Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, 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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8
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Rao MLN, Nand S, Murty VN. Metal‐Catalyzed Divergent Synthetic Methods for Pyrrolocoumarins and Furocoumarins. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maddali L. N. Rao
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
| | - Sachchida Nand
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
| | - Venneti N. Murty
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
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9
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Ye YF, Yang WW, Zhang JW, Fu JY, Zhu JY, Wang YB. Phosphine-Catalyzed Synthesis of 3-Allyl-4-pyrones by the Tandem Reaction of Diynones and Allylic Alcohols. J Org Chem 2021; 86:14476-14484. [PMID: 34658239 DOI: 10.1021/acs.joc.1c01340] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A simple and effective tandem reaction of diynones and allylic alcohols was developed to afford functionalized 3-allyl-4-pyrones in moderate to excellent yields. This protocol underwent a Michael addition─Claisen rearrangement─O-cyclization process, which exhibited broad substrate tolerance, high regioselectivity, and atom economy under a metal-free condition. Moreover, functional transformation of the products was also further studied.
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Affiliation(s)
- Ya-Fang Ye
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Wan-Wan Yang
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Jing-Wen Zhang
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Ji-Ya Fu
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Jun-Yan Zhu
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Yan-Bo Wang
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
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10
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Morja MI, Chauhan PM, Chikhalia KH. Palladium‐Catalyzed Novel C(formyl)‐C(aryl)/C(aryl)‐N(amine) Coupling Sequence Between 2‐(Methylamino)nicotinaldehyde and 3‐Bromo‐2‐chlorothiophene: An Efficient Construction of 4‐Pyridone Fused Hybrid Scaffolds. ChemistrySelect 2021. [DOI: 10.1002/slct.202100790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mayur I. Morja
- Department of Chemistry Veer Narmad South Gujarat University Surat 395007 Gujarat India
| | | | - Kishor H. Chikhalia
- Department of Chemistry Veer Narmad South Gujarat University Surat 395007 Gujarat India
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11
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Guo Z, Zhao Y, Wang Y, Xie M, Zhang J. Construction of 3-Sulfonyl Naphthalenes via Tandem Reaction of 1,4-Diyn-3-yl Esters with Sodium Sulfinates. J Org Chem 2021; 86:6247-6258. [PMID: 33874722 DOI: 10.1021/acs.joc.1c00038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Polysubstituted 3-sulfonyl naphthalenes were constructed in good to high yields by AlCl3-mediated tandem reaction of 1,4-diyn-3-yl esters and sodium sulfinates. This reaction proceeded under mild reaction conditions and tolerated a variety of functional groups. Moreover, the mechanistic studies indicated that the initial formation of allene under DBU from 1,4-diyn-3-yl ester and a sequence of nucleophilic addition of sodium sulfinate, the formation of allene, and intramolecular cyclization might be involved.
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Affiliation(s)
- Ziyi Guo
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yiming Zhao
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yu Wang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Meihua Xie
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jitan Zhang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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12
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Sun X, Gong M, Huang M, Li Y, Kim JK, Kovalev V, Shokova E, Wu Y. "One-Pot" Synthesis of γ-Pyrones from Aromatic Ketones/Heteroarenes and Carboxylic Acids. J Org Chem 2020; 85:15051-15061. [PMID: 33147963 DOI: 10.1021/acs.joc.0c01924] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Despite the various attractive properties of γ-pyrones, there are still some deficiencies in their synthetic approaches such as lower atom economy, multistep processes, and prefunctionalization of the reagents. In this work, an efficient and simple (CF3CO)2O/CF3SO3H-mediated "one-pot" approach was realized to produce γ-pyrones by applying aromatic ketones/heteroarenes and carboxylic acids as the starting materials. The target products were isolated in moderate to excellent yields. The reaction mechanism was studied by density functional theory calculational methods. The results of experimental and theoretical investigations not only helped us explain the reason of high selectivity formation of β-diketones but also proved that 1,3,5-ketones might be important intermediates for the cyclization to afford γ-pyrones.
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Affiliation(s)
- Xiangyu Sun
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Ming Gong
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Mengmeng Huang
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Yabo Li
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Jung Keun Kim
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Vladimir Kovalev
- Department of Chemistry, Moscow State University, Lenin's Hills, Moscow 119991, Russia
| | - Elvira Shokova
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
| | - Yangjie Wu
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, China
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13
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Stojanović M, Bugarski S, Baranac-Stojanović M. Synthesis of 2,3-Dihydro-4-pyridones and 4-Pyridones by the Cyclization Reaction of Ester-Tethered Enaminones. J Org Chem 2020; 85:13495-13507. [PMID: 33092340 DOI: 10.1021/acs.joc.0c01537] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
2,3-Dihydro-4-pyridone skeleton is an important building block in organic synthesis because it features several reaction sites with nucleophilic or electrophilic properties. Herein, we disclose a method for its formation by intramolecular cyclization of ester-tethered enaminones, which can easily be synthesized from readily available materials, such as amines, activated alkynes, and activated alkenes. 2,3-Dihydro-4-pyridones have been isolated in 41-90% yields. We also demonstrate the transformation of these heterocycles into another important class of compounds, 4-pyridones, by utilizing 2,3,5,6-tetrachloro-p-benzoquinone (chloranil) as an oxidizing agent. The latter products were isolated in 65-94% yields.
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Affiliation(s)
- Milovan Stojanović
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy-Center for Chemistry, Njegoševa 12, P.O. Box 473, 11000 Belgrade, Serbia
| | - Slobodan Bugarski
- University of Belgrade-Faculty of Chemistry, Studentski trg 12-16, P.O. Box 158, 11000 Belgrade, Serbia
| | - Marija Baranac-Stojanović
- University of Belgrade-Faculty of Chemistry, Studentski trg 12-16, P.O. Box 158, 11000 Belgrade, Serbia
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14
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Solas M, Muñoz MA, Suárez-Pantiga S, Sanz R. Regiodivergent Hydration-Cyclization of Diynones under Gold Catalysis. Org Lett 2020; 22:7681-7687. [PMID: 32915582 DOI: 10.1021/acs.orglett.0c02892] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Skipped diynones, efficiently prepared from biomass-derived ethyl lactate, undergo a tandem hydration-oxacyclization reaction under gold(I) catalysis. Reaction conditions have been developed for a switchable process that allows selective access to 4-pyrones or 3(2H)-furanones from the same starting diynones. Further application of this methodology in the total synthesis of polyporapyranone B was demonstrated.
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Affiliation(s)
- Marta Solas
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Miguel A Muñoz
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Samuel Suárez-Pantiga
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Roberto Sanz
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
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15
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Neto JSS, Zeni G. Transition Metal‐Catalyzed and Metal‐Free Cyclization Reactions of Alkynes with Nitrogen‐Containing Substrates: Synthesis of Pyrrole Derivatives. ChemCatChem 2020. [DOI: 10.1002/cctc.201902325] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jose S. S. Neto
- Departamento de QuímicaUniversidade Federal de Santa Catarina Florianópolis Santa Catarina 88040-900 Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNEUniversidade Federal de Santa Maria Santa Maria Rio Grande do Sul 97105-900 Brazil
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16
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Qiu YF, Niu YJ, Song XR, Wei X, Chen H, Li SX, Wang XC, Huo C, Quan ZJ, Liang YM. Iodine promoted cascade cycloisomerization of 1-en-6,11-diynes. Chem Commun (Camb) 2020; 56:1421-1424. [PMID: 31912818 DOI: 10.1039/c9cc08286g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iodine promoted cascade cycloisomerization of 1-en-6,11-diynes is presented for the easy preparation of tetrahydrobenzo[f]isoquinolines. This developed reaction system is identified as having good functional-group applicability and can be scaled up to gram quantities. In this transformation, two new cyclic frameworks and one carbonyl group are formed with four new bonds constructed. Additionally, the resulting iodo-substituted compounds could be further derived through simple elimination reactions.
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Affiliation(s)
- Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, People's Republic of China.
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17
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Grošelj U, Ciber L, Gnidovec J, Testen Ž, Požgan F, Štefane B, Tavčar G, Svete J, Ričko S. Synthesis of Spiro‐Δ
2
‐Pyrrolin‐4‐One Pseudo Enantiomers
via
an Organocatalyzed Sulfa‐Michael/Aldol Domino Sequence. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Uroš Grošelj
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Luka Ciber
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Jan Gnidovec
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Žan Testen
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Franc Požgan
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Bogdan Štefane
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Gašper Tavčar
- Inorganic Chemistry and Technology – K1J. Stefan Institute Jamova 39 1000 Ljubljana Slovenia
| | - Jurij Svete
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
| | - Sebastijan Ričko
- Faculty of Chemistry and ChemicalTechnology, University of Ljubljana Večna pot 113 SI-1000 Ljubljana, Slovenia
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18
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Chen Z, Liang P, Xu F, Deng Z, Long L, Luo G, Ye M. Metal-Free Aminothiation of Alkynes: Three-Component Tandem Annulation toward Indolizine Thiones from 2-Alkylpyridines, Ynals, and Elemental Sulfur. J Org Chem 2019; 84:12639-12647. [PMID: 31545050 DOI: 10.1021/acs.joc.9b01802] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A metal-free three-component annulation reaction for the synthesis of indolizine thiones via tandem C-C/C-N/C-S bond formation was developed. Various 2-alkylpyridines with aromatic ynals and elemental sulfur proceeded smoothly under catalyst-free conditions, and the desired products were obtained in moderate to excellent yields.
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Affiliation(s)
- Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Pei Liang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Fan Xu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Zhen Deng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Lipeng Long
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Guotian Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Min Ye
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
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19
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Li Y, Yu J, Bi Y, Yan G, Huang D. Tandem Reactions of Ynones:viaConjugate Addition of Nitrogen‐, Carbon‐, Oxygen‐, Boron‐, Silicon‐, Phosphorus‐, and Sulfur‐Containing Nucleophiles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900611] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yang Li
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Jian Yu
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Yicheng Bi
- Department of ChemistryQingdao University of Science & Technology Qingdao Shandong People's Republic of China
| | - Guobing Yan
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Dayun Huang
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
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20
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Zhang S, Cheng H, Mo S, Yin S, Zhang Z, Wang T. Gold(I)‐Catalyzed Synthesis of Six‐Membered P,O‐Heterocycles
via
Hydration/Intramolecular Cyclization Cascade Reaction. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shan Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Haiyang Cheng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Sheng Mo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Shiwei Yin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
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21
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Huang J, Hu G, An S, Chen D, Li M, Li P. Synthesis of N-Alkylpyridin-4-ones and Thiazolo[3,2- a]pyridin-5-ones through Pummerer-Type Reactions. J Org Chem 2019; 84:9758-9769. [PMID: 31290663 DOI: 10.1021/acs.joc.9b01672] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
N-Alkylated 4-pyridones were obtained through a one-pot procedure involving either normal or interrupted Pummerer reactions between triflic anhydride-activated sulfoxides and 4-fluoropyridine derivatives, followed by hydrolysis. On the other hand, triflic anhydride-activated benzyl 6-fluoro-2-pyridyl sulfoxide could react with alkenes or alkynes to afford thiazolo[3,2-a]pyridin-5-ones, via the pyridinium salt intermediates.
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Affiliation(s)
- Jingjia Huang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Gang Hu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China.,Department of Chemistry , Baotou Teacher's College , Baotou 014030 , China
| | - Shaoyu An
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Dongding Chen
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Minglei Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Pingfan Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
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22
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Wang M, Shi L, Li Y, Liu Q, Pan L. Synthesis of γ-Pyrones from Formal [4 + 2] Cyclization of Ketene Dithioacetals with Acyl Chlorides. J Org Chem 2019; 84:9603-9610. [DOI: 10.1021/acs.joc.9b01254] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mingshan Wang
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Lou Shi
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yifei Li
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Qun Liu
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Ling Pan
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
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23
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Chen Z, Liang P, Xu F, Qiu R, Tan Q, Long L, Ye M. Lewis Acid-Catalyzed Intermolecular Annulation: Three-Component Reaction toward Imidazo[1,2- a]pyridine Thiones. J Org Chem 2019; 84:9369-9377. [PMID: 31274309 DOI: 10.1021/acs.joc.9b01188] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Lewis acid-catalyzed three-component annulation reaction of 2-aminopyridines and ynals with elemental sulfur was established. A series of imidazo[1,2-a]pyridine thiones was obtained in moderate to excellent yields. The merits of this transformation include easily available starting materials, multiple C-heteroatom bond formation in one pot, good functional group tolerance, elemental sulfur as S source, operational simplicity, etc.
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Affiliation(s)
- Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Pei Liang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Fan Xu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Rulin Qiu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Qi Tan
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Lipeng Long
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
| | - Min Ye
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou 341000 , P. R. China
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24
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Zhao Y, Henry SA, Jin J, Clarkson GJ, Chan PWH. Brønsted Acid‐Catalyzed Cyclization of
β
‐Amino‐1,4‐enols to Oxazol‐2(3
H
)‐ones and 5‐Alkenyloxazolidin‐2‐ones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yichao Zhao
- School of ChemistryMonash University Clayton Victoria 3800 Australia
| | - Stuart Adam Henry
- Department of ChemistryUniversity of Warwick Coventry CV4 7AL United Kingdom
| | - Jianwen Jin
- School of ChemistryMonash University Clayton Victoria 3800 Australia
| | - Guy James Clarkson
- Department of ChemistryUniversity of Warwick Coventry CV4 7AL United Kingdom
| | - Philip Wai Hong Chan
- School of ChemistryMonash University Clayton Victoria 3800 Australia
- Department of ChemistryUniversity of Warwick Coventry CV4 7AL United Kingdom
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25
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Pankova AS, Cherepanova ND, Golubev P, Kuznetsov MA. Selective Synthesis of 2-Methylidenepyrrol-3-Ones from Diynones and Amines. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02515-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Qiu YF, Niu YJ, Wei X, Cao BQ, Wang XC, Quan ZJ. AgSCF3/Na2S2O8-Promoted Trifluoromethylthiolation/Cyclization of o-Propargyl Arylazides/o-Alkynyl Benzylazides: Synthesis of SCF3-Substituted Quinolines and Isoquinolines. J Org Chem 2019; 84:4165-4178. [DOI: 10.1021/acs.joc.9b00181] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, People’s Republic of China
| | - Yue-Jie Niu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, People’s Republic of China
| | - Xi Wei
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, People’s Republic of China
| | - Bao-Qian Cao
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, People’s Republic of China
| | - Xi-Cun Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, People’s Republic of China
| | - Zheng-Jun Quan
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, People’s Republic of China
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou, Gansu 730070, People’s Republic of China
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27
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Liu W, Fang L, Wan Y, Zhang J, Deng G, Wang J. Synthesis of 2-cyclopropyl-4-pyrones and 5-cyclopropyl-2-alkylene-3(2H)-furanones based on tandem cyclization-cyclopropanation strategy. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.11.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Chen Z, Liang P, Ma X, Luo H, Xu G, Liu T, Wen X, Zheng J, Ye H. Catalyst-Free Annulation of 2-Pyridylacetates and Ynals with Molecular Oxygen: An Access to 3-Acylated Indolizines. J Org Chem 2019; 84:1630-1639. [PMID: 30608171 DOI: 10.1021/acs.joc.8b02883] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A catalyst and additive-free annulation of 2-pyridylacetates and ynals under molecular oxygen was the first developed, affording 3-acylated indolizines in good to excellent yields. Molecular oxygen was used as the source of the carbonyl oxygen atom in indolizines. This approach was compatible with a wide range of functional groups, and especially it has been successfully extended to unsaturated double bonds and triple bonds, which were difficult to prepare by previous methods in a single step.
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Affiliation(s)
- Zhengwang Chen
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China.,Hubei Key Laboratory of Processing and Application of Catalytic Materials , Huanggang Normal University , Huanggang , 438000 , China
| | - Pei Liang
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Xiaoyue Ma
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Haiqing Luo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Guohai Xu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Tanggao Liu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Xiaowei Wen
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Jing Zheng
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province , Gannan Normal University , Ganzhou , 341000 , China
| | - Hui Ye
- Hubei Key Laboratory of Processing and Application of Catalytic Materials , Huanggang Normal University , Huanggang , 438000 , China
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29
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Li X, Wang T, Zhang Z. Synthesis of 4-(Iso)Quinolinyl-3(2H
)-furanones from (Iso)Quinoline N
-oxides and 1,4-Diyn-3-ones: A Comparison of Copper Catalysis and Metal-free Reaction. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801382] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xuetong Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue Xi'an 710119 People's Republic of China
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30
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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
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31
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Pierrot D, Presset M, Rodriguez J, Bonne D, Coquerel Y. Normal, Abnormal, and Cascade Wittig Olefinations of α-Oxoketenes. Chemistry 2018; 24:11110-11118. [PMID: 29968938 DOI: 10.1002/chem.201801533] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/07/2018] [Indexed: 11/06/2022]
Abstract
α-Oxoketenes generated in situ by a thermal Wolff rearrangement have been found to participate as 1,2- and 1,4-ambident C-electrophilic/O-nucleophilic reagents towards donor/acceptor carbonyl-stabilized Wittig ylides. This resulted in the very direct and practical syntheses of functionalized allenes by a normal Wittig olefination, 4H-pyran-4-ones by an abnormal Wittig olefination, or 4H-pyranylidenes following a Wittig/abnormal Wittig cascade sequence as a function of the substrates combination employed. Mechanistic experimental and computational studies provided a full rational for these reactivity switches. Some unusual mechanistic features for Lewis acid-free Wittig olefinations were identified in this series such as the involvement of betaine intermediates and some degree of reversibility in the normal Wittig olefination. The abnormal Wittig olefination was fully uncovered.
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Affiliation(s)
- David Pierrot
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Marc Presset
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.,Present address: Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC, 2-8 rue Henri Dunant, 94320, Thiais, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Damien Bonne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Yoann Coquerel
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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32
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Fang R, Zhou L, Tu PC, Kirillov AM, Yang L. Computational Study on Gold-Catalyzed Cascade Reactions of 1,4-Diynes and Pyrroles: Mechanism, Regioselectivity, Role of Catalyst, and Effects of Substituent and Solvent. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00201] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ran Fang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Lin Zhou
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Peng-Cheng Tu
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Alexander M. Kirillov
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Lizi Yang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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33
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Yu Y, Zhang Y, Xiao LY, Peng QQ, Zhao YL. Thermally induced formal [4+2] cycloaddition of 3-aminocyclobutenones with electron-deficient alkynes: facile and efficient synthesis of 4-pyridones. Chem Commun (Camb) 2018; 54:8229-8232. [DOI: 10.1039/c8cc03974g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A thermally induced novel formal [4+2] cycloaddition of cyclobutenones with electron-deficient alkynes under metal-free conditions has been developed. The reaction provides a straightforward and efficient method for the synthesis of 4-pyridone derivatives in a single step.
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Affiliation(s)
- Yang Yu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yan Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Li-Yun Xiao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Qin-Qin Peng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
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34
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Maezono SMB, Park GE, Lee YR. Regiospecific construction of diverse and polyfunctionalized γ-pyrone cores by indium(iii)-catalyzed annulation of diazodicarbonyls with active methylenes, 4-hydroxycoumarins, or 4-hydroxyquinolinone. Org Chem Front 2018. [DOI: 10.1039/c8qo01006d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and novel annulation protocol for the construction of diverse and polyfunctionalized γ-pyrones via an InBr3-catalyzed reaction is described.
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Affiliation(s)
| | - Ga Eul Park
- 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
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35
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36
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Hamada N, Yoshida Y, Oishi S, Ohno H. Gold-Catalyzed Cascade Reaction of Skipped Diynes for the Construction of a Cyclohepta[b]pyrrole Scaffold. Org Lett 2017; 19:3875-3878. [DOI: 10.1021/acs.orglett.7b01759] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Naoka Hamada
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yusuke Yoshida
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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37
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Saulnier S, Lozovskiy SV, Golovanov AA, Ivanov AY, Vasilyev AV. Brønsted Acid Promoted Cyclization of Cross-Conjugated Enynones into Dihydropyran-4-ones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700423] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Steve Saulnier
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
| | - Stanislav V. Lozovskiy
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
| | - Alexander A. Golovanov
- Department of Chemistry; Chemical Processes and Technologies; Togliatti State University; Belorusskaya ul. 14 445667 Togliatti Russia
| | - Alexander Yu. Ivanov
- Center for Magnetic Resonance; Research Park; Saint Petersburg State University; Universitetskiy pr. 26 198504 Saint Petersburg, Petrodvoretz Russia
| | - Aleksander V. Vasilyev
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
- Department of Chemistry; Saint Petersburg State Forest Technical University; Institutsky per. 5 194021 Saint Petersburg Russia
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38
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Xu YL, Teng QH, Tong W, Wang HS, Pan YM, Ma XL. Atom-Economic Synthesis of 4-Pyrones from Diynones and Water. Molecules 2017; 22:E109. [PMID: 28075414 PMCID: PMC6155647 DOI: 10.3390/molecules22010109] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/05/2017] [Accepted: 01/05/2017] [Indexed: 12/31/2022] Open
Abstract
Transition-metal-free synthesis of 4-pyrones via TfOH-promoted nucleophilic addition/cyclization of diynones and water has been developed. This transformation is simple, atom economical and environmentally benign, providing rapid and efficient access to substituted 4-pyrones.
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Affiliation(s)
- Yan-Li Xu
- College of Pharmacy, Guilin Medical University, Guilin 541004, China.
| | - Qing-Hu Teng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China.
| | - Wei Tong
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China.
| | - Heng-Shan Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China.
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China.
| | - Xian-Li Ma
- College of Pharmacy, Guilin Medical University, Guilin 541004, China.
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39
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Merad J, Maier T, Rodrigues CAB, Maulide N. Synthesis of γ-pyrones via decarboxylative condensation of β-ketoacids. MONATSHEFTE FUR CHEMIE 2016; 148:57-62. [PMID: 28127091 PMCID: PMC5225206 DOI: 10.1007/s00706-016-1851-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 09/25/2016] [Indexed: 11/28/2022]
Abstract
Abstract This manuscript describes the convergent synthesis of aryl- and alkyl-disubstituted γ-pyrones from β-ketoacids. The reaction proceeds in the presence of trifluoromethanesulfonic anhydride via an unprecedented decarboxylative auto-condensation of the starting material. Herein, the scope and limitations of this transformation are reported. Graphical abstract ![]()
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Affiliation(s)
- Jérémy Merad
- Fakultät für Chemie, Institut für Organische Chemie, Universität Wien, Währinger Strasse 38, 1090 Vienna, Austria
| | - Thomas Maier
- Fakultät für Chemie, Institut für Organische Chemie, Universität Wien, Währinger Strasse 38, 1090 Vienna, Austria
| | - Catarina A. B. Rodrigues
- Fakultät für Chemie, Institut für Organische Chemie, Universität Wien, Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Fakultät für Chemie, Institut für Organische Chemie, Universität Wien, Währinger Strasse 38, 1090 Vienna, Austria
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40
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Dong S, Fang C, Tang W, Lu T, Du D. Alkynyl Acylammoniums as Electrophilic 3C Synthons in a Formal [3 + 3] Annulation: Access to Functionalized 4H-Pyran-4-ones. Org Lett 2016; 18:3882-5. [DOI: 10.1021/acs.orglett.6b01891] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Shuding Dong
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Chao Fang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Weifang Tang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ding Du
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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41
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Teng QH, Xu YL, Liang Y, Wang HS, Wang YC, Pan YM. Transition Metal-Free Synthesis of 3-Alkynylpyrrole-2-carboxylatesviaMichael Addition/Intramolecular Cyclodehydration. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501073] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Qiu YF, Song XR, Li M, Zhu XY, Wang AQ, Yang F, Han YP, Zhang HR, Jin DP, Li YX, Liang YM. BF3·OEt2-AgSCF3 Mediated Trifluoromethylthiolation/Cascade Cyclization of Propynols: Synthesis of 4-((Trifluoromethyl)thio)-2H-chromene and 4-((Trifluoromethyl)thio)-1,2-dihydroquinoline Derivatives. Org Lett 2016; 18:1514-7. [DOI: 10.1021/acs.orglett.6b00065] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Xian-Rong Song
- Jiangxi
Key Laboratory of Organic Chemistry, Jiangxi Science Technology Normal University, Nanchang, People’s Republic of China
| | - Ming Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Xin-Yu Zhu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - An-Qi Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Fang Yang
- College of Science, Northwest A&F University, 3 Taicheng Road, Yangling, People’s Republic of China
| | - Ya-Ping Han
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Heng-Rui Zhang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Dong-Po Jin
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Ying-Xiu Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, People’s Republic of China
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43
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Shu C, Li L, Shen CH, Ruan PP, Liu CY, Ye LW. Gold-Catalyzed Tandem Cycloisomerization-Halogenation of Chiral Homopropargyl Sulfonamides. Chemistry 2016; 22:2282-90. [DOI: 10.1002/chem.201503891] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Chao Shu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 Fujian P. R. China
| | - Long Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 Fujian P. R. China
| | - Cang-Hai Shen
- State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 Fujian P. R. China
| | - Peng-Peng Ruan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 Fujian P. R. China
| | - Chao-Yue Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 Fujian P. R. China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 Fujian P. R. China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 P. R. China
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44
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Ponra S, Majumdar KC. Brønsted acid-promoted synthesis of common heterocycles and related bio-active and functional molecules. RSC Adv 2016. [DOI: 10.1039/c5ra27069c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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45
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Roehrs JA, Pistoia RP, Back DF, Zeni G. Diorganyl Dichalcogenides-Promoted Nucleophilic Closure of 1,4-Diyn-3-ols: Synthesis of 2-Benzoyl Chalcogenophenes. J Org Chem 2015; 80:12470-81. [PMID: 26561717 DOI: 10.1021/acs.joc.5b02334] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report here the preparation of chalcogenophene derivatives via cyclization reactions of diynols promoted by diorganyl dichalcogenides and a halogen source. Different chalcogenophenes, such as 4-halo-selenophenes, 4-butylselenyl-selenophenes, halo-thiophenes, and 4-methylthio-thiophenes, were selectively prepared in good yields from the same starting materials. The results revealed that the halogen source had a significant effect on the proportion of 4-bromo-selenophenes and 4-butylselenyl-selenophenes. The best yields of 4-iodo-selenophenes were obtained with iodine as a halogen source, while the use of NBS gave exclusively the 4-butylselenyl-selenophenes. The experiments also revealed that the cyclization reaction to form 4-halo-thiophene derivatives can also be controlled changing the ratios of reagents. The 4-iodo-thiophenes were exclusively obtained by using dimethyl disulfide (2.0 equiv) and iodine (1.5 equiv), while the 4-bromo-thiophenes were obtained when the reaction was carried out with a 1.5 molar ratio of dimethyl disulfide and a halogen source. In addition, the reaction of diynols with an excess of dimethyl disulfide in the presence of NBS gave the 4-methylthio-thiophenes as sole products. We also studied the application of chalcogenophenes obtained as starting materials in the Suzuki, Sonogashira, and Ullmann cross-coupling reactions.
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Affiliation(s)
- Juliano A Roehrs
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Renan P Pistoia
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Davi F Back
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
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46
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Qiu YF, Zhu XY, Li YX, He YT, Yang F, Wang J, Hua HL, Zheng L, Wang LC, Liu XY, Liang YM. AgSCF3-Mediated Trifluoromethylthiolation/Radical Cascade Cyclization of 1,6-Enynes. Org Lett 2015; 17:3694-7. [DOI: 10.1021/acs.orglett.5b01657] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xin-Yu Zhu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Ying-Xiu Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yu-Tao He
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Fang Yang
- College of Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, People’s Republic of China
| | - Jia Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Hui-Liang Hua
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Lan Zheng
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Li-Chen Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xue-Yuan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
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47
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Wang J, Zhu HT, Qiu YF, Niu Y, Chen S, Li YX, Liu XY, Liang YM. Facile Synthesis of Carbazoles via a Tandem Iodocyclization with 1,2-Alkyl Migration and Aromatization. Org Lett 2015; 17:3186-9. [DOI: 10.1021/acs.orglett.5b01590] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jia Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Hai-Tao Zhu
- Shannxi
Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yuan Niu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Si Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ying-Xiu Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xue-Yuan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
- State
Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical
Physics, Chinese Academy of Science, Lanzhou, 730000, P. R. China
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48
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Huang F, Wu P, Wang L, Chen J, Sun C, Yu Z. Copper-mediated intramolecular oxidative C-H/N-H cross-coupling of α-alkenoyl ketene N,S-acetals to synthesize pyrrolone derivatives. Chem Commun (Camb) 2015; 50:12479-81. [PMID: 25188605 DOI: 10.1039/c4cc05837b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CuCl2 and CuBr2-mediated intramolecular oxidative C-H/N-H cross-coupling/halogenation of β-thioalkyl-substituted α-alkenoyl ketene N,S-acetals occurred efficiently, affording 4-halo-5-thioalkyl-3-pyrrolones. Tunable C-S and C-halo bond transformations of the resultant pyrrolone derivatives led to highly functionalized N-heterocyclic compounds.
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Affiliation(s)
- Fei Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
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49
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Huang H, Zhu X, He G, Liu Q, Fan J, Zhu H. Controlled Synthesis of 1,3,5-Oxadiazin-2-ones and Oxazolones through Regioselective Iodocyclization of Ynamides. Org Lett 2015; 17:2510-3. [DOI: 10.1021/acs.orglett.5b01045] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hai Huang
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiaolin Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Guangke He
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Qi Liu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Junzhen Fan
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Hongjun Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
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50
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Golubev PR, Pankova AS, Kuznetsov MA. Regioselective Transition-Metal-Free Synthesis of 2-(Trimethylsilylmethylene)pyrrol-3-ones by Thermal Cyclization of Acetylenic Enamines. J Org Chem 2015; 80:4545-52. [DOI: 10.1021/acs.joc.5b00398] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pavel R. Golubev
- Institute of Chemistry, Saint Petersburg State University, Universitetsky
pr. 26, 198504 Saint
Petersburg, Russia
| | - Alena S. Pankova
- Institute of Chemistry, Saint Petersburg State University, Universitetsky
pr. 26, 198504 Saint
Petersburg, Russia
| | - Mikhail A. Kuznetsov
- Institute of Chemistry, Saint Petersburg State University, Universitetsky
pr. 26, 198504 Saint
Petersburg, Russia
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