1
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Davas D, Gopalakrishnan DK, Kumar S, Anmol, Karmakar T, Vaitla J. Visible Light-Promoted Regioselective Benzannulation of Vinyl Sulfoxonium Ylides with Ynoates. JACS AU 2024; 4:1073-1080. [PMID: 38559716 PMCID: PMC10976606 DOI: 10.1021/jacsau.3c00802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/06/2024] [Accepted: 02/13/2024] [Indexed: 04/04/2024]
Abstract
Herein, we report a highly regioselective [4 + 2]-annulation of vinyl sulfoxonium ylides with ynoates under light-mediated conditions. The reaction proceeds through the new dienyl sulfoxonium ylide, which undergoes photolysis under blue light irradiation to give highly substituted naphthalene scaffolds. The method presented here operates at room temperature and does not require the addition of an external photosensitizer. The in situ-generated dienyl sulfoxonium ylide absorbs light and acts as a photosensitizer for the formation of arenes. The synthetic potential of these benzannulations was further illustrated by various synthetic transformations and a scale-up reaction. Moreover, control experiments and quantum chemical calculations reveal the mechanistic details of the developed reaction.
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Affiliation(s)
- Daksh
Singh Davas
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
| | | | - Sandeep Kumar
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
| | - Anmol
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
| | - Tarak Karmakar
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
| | - Janakiram Vaitla
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
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2
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Genov GR, Takezawa H, Hayakawa H, Fujita M. Tetradehydro-Diels-Alder Reactions of Flexible Arylalkynes via Folding Inside a Molecular Cage. J Am Chem Soc 2023; 145:17013-17017. [PMID: 37493945 DOI: 10.1021/jacs.3c06301] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
The tetradehydro-Diels-Alder (TDDA) reaction is a useful transformation for the rapid assembly of polycyclic scaffolds from simple linear precursors in a single synthetic step. However, the reaction requires careful substrate design and harsh reaction conditions to overcome the inherent entropic cost for this transformation. Herein we report an efficient site-selective TDDA transformation within a self-assembled Pd6L4 cage. Despite the large size, the flexibility of the employed substrates allows for efficient encapsulation within the host cavity. The rate of thermal cyclization of the encapsulated guest was found to be greatly enhanced, and high product selectivity for an unsymmetrical substrate was observed. The efficiency of this system relies on the precise conformational control of the substrate within the confined space of the host cage.
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Affiliation(s)
- Georgi R Genov
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Mitsui Link Lab Kashiwanoha 1, FS CREATION, 6-6-2 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Hiroki Takezawa
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Mitsui Link Lab Kashiwanoha 1, FS CREATION, 6-6-2 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Harumi Hayakawa
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Mitsui Link Lab Kashiwanoha 1, FS CREATION, 6-6-2 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Makoto Fujita
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Mitsui Link Lab Kashiwanoha 1, FS CREATION, 6-6-2 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
- Division of Advanced Molecular Science, Institute for Molecular Science (IMS), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Tokyo College, The University of Tokyo Institutes for Advanced Study, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
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3
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Johnson LK, Barnes GL, Fernandez SA, Vanderwal CD. Hydrogen-Atom-Transfer-Initiated Radical/Polar Crossover Annulation Cascade for Expedient Access to Complex Tetralins. Angew Chem Int Ed Engl 2023; 62:e202303228. [PMID: 36952637 PMCID: PMC10164078 DOI: 10.1002/anie.202303228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/21/2023] [Accepted: 03/23/2023] [Indexed: 03/25/2023]
Abstract
A radical/polar crossover annulation between allyl-substituted arenes and electron-deficient alkenes is described. Cobalt-catalyzed hydrogen atom transfer (HAT) facilitates tandem radical C-C bond formation that generates functionalized tetralin products in the face of potentially problematic hydrofluorination, hydroalkoxylation, hydrogenation, alkene isomerization, and radical polymerization reactions. The reactions proceed under mild conditions that tolerate many functional groups, leading to a broad substrate scope. This powerful ring-forming reaction very quickly assembles complex tetralins that are the formal products of the largely infeasible Diels-Alder cycloadditions of styrenes.
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Affiliation(s)
- Lucas K Johnson
- 1102 Natural Sciences II, Department of Chemistry, University of California, 92697-2025, Irvine, CA, USA
| | - Griffin L Barnes
- 1102 Natural Sciences II, Department of Chemistry, University of California, 92697-2025, Irvine, CA, USA
| | - Sebastian A Fernandez
- 1102 Natural Sciences II, Department of Chemistry, University of California, 92697-2025, Irvine, CA, USA
| | - Christopher D Vanderwal
- 1102 Natural Sciences II, Department of Chemistry, University of California, 92697-2025, Irvine, CA, USA
- Department of Pharmaceutical Sciences, 101 Theory, University of California, 92697, Irvine, CA, USA
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4
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Festersen L, Czekelius C. Photocatalytic Cascade Cyclization of Aryl Haloalkynyl Ketones Forming Cyclopenta[ b]naphthalene Derivatives. Org Lett 2023; 25:3553-3558. [PMID: 37154431 DOI: 10.1021/acs.orglett.3c01197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
An efficient metal-free, photoredox-mediated cascade cyclization of aryl 1-haloalk-5-ynyl ketones has been developed. Using catalytic amounts of eosin Y (EY) and EtNMe2 as a reductive quencher, various aryl 1-haloalk-5-ynyl ketones have been transformed into the corresponding cyclization products in up to 98% yield. As a result, synthetic access to differently α-functionalized cyclopenta[b]naphthones and direct construction of cyclopenta[b]naphtholes has been developed.
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Affiliation(s)
- Lea Festersen
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40255 Düsseldorf, Germany
| | - Constantin Czekelius
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40255 Düsseldorf, Germany
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5
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Camedda N, Bigi F, Maggi R, Maestri G. Sequential Strategies to Trigger Mild Dearomative Diels-Alder Cyclizations. Org Lett 2023; 25:2233-2237. [PMID: 36961988 DOI: 10.1021/acs.orglett.3c00454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
Dihydronaphthalenes are present in several functional molecules, but their assembly is challenging. However, a sequential strategy can induce the key annullation of an alkyne with a vinylarene under mild conditions. Products form in good yields, with ample functional tolerance via domino nucleophilic substitution and dearomative Diels-Alder and ene reactions. DFT modeling data show that alkali cations are crucial to ensure a smooth dearomative cyclization on the in situ generated intermediates.
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Affiliation(s)
- Nicola Camedda
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Franca Bigi
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
- IMEM-CNR, Parco Area delle Scienze 37/A, 43124 Parma, Italy
| | - Raimondo Maggi
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Giovanni Maestri
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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6
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Iftikhar R, Mazhar A, Iqbal MS, Khan FZ, Askary SH, Sibtain H. Ring forming transformations of ynamides via cycloaddition. RSC Adv 2023; 13:10715-10756. [PMID: 37025669 PMCID: PMC10072253 DOI: 10.1039/d3ra00139c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/29/2023] [Indexed: 04/07/2023] Open
Abstract
Ynamides are N-alkyne compounds bearing an electron withdrawing group at the nitrogen atom. They offer unique pathways for the construction of versatile building blocks owing to their exceptional balance between reactivity and stability. Recently several studies have been reported that explore and illustrate the synthetic potential of ynamides and ynamide-derived advanced intermediates in cycloadditions with different reaction partners to yield heterocyclic cycloadducts of synthetic and pharmaceutical value. Cycloaddition reactions of ynamides are the facile and preferable routes for the construction of structural motifs having striking importance in synthetic, medicinal chemistry, and advanced materials. In this systematic review, we highlighted the recently reported novel transformations and synthetic applications that involved the cycloaddition reaction of ynamides. The scope along with the limitations of the transformations are discussed in detail. Synthetic potential of ynamides and ynamide-derived advanced intermediates in cycloaddition reactions with different reaction partners to yield versatile heterocyclic adducts.![]()
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Affiliation(s)
- Ramsha Iftikhar
- Department of Chemistry, Government College University Faisalabad38000-FaisalabadPakistan
| | - Aqsa Mazhar
- Faculty of Health and Medicine, University of New South Wales2033-SydneyAustralia
| | - Muhammad Saqlain Iqbal
- Department of Electrical Information Engineering, Polytechnic University of Bari70126-BariItaly
| | - Faiza Zahid Khan
- Institute of Chemistry, RheinischeFriedrich-Wilhelms-Universität BonnBonnGermany
| | - Syed Hassan Askary
- Department of Chemistry, University of Management and Technology54770-LahorePakistan
| | - Hifza Sibtain
- Department of Chemistry, University of Management and Technology54770-LahorePakistan
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7
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Rammohan A, Krinochkin AP, Khasanov AF, Kopchuk DS, Zyryanov GV. Sustainable Solvent-Free Diels-Alder Approaches in the Development of Constructive Heterocycles and Functionalized Materials: A Review. Top Curr Chem (Cham) 2022; 380:43. [PMID: 35951264 DOI: 10.1007/s41061-022-00398-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 06/15/2022] [Indexed: 10/15/2022]
Abstract
The Diels-Alder reaction (DAR) is found in myriad applications in organic synthesis and medicinal chemistry for drug development, as it is the method of choice for the expedient synthesis of complex natural compounds and innovative materials including nanomaterials, graphene expanses, and polymeric nanofibers. Furthermore, the greatest focus of attention of DARs is on the consistent reaction procedure with stimulus yields by highly stereo- and regioselective mechanistic pathways. Therefore, the present review is intended to summarize conventional solvent-free (SF) DARs for the expedient synthesis of heterocyclic compounds and materials. In particular, this review deals with the DARs of mechanochemical grinding, catalysis (including stereoselective catalysts), thermal, and electromagnetic radiation (such as microwave [MW], infrared [IR], and ultraviolet [UV] irradiation) in SF procedures. Therefore, this comprehensive review validates the application of DARs to pharmaceutical innovations and biorenewable materials through consistent synthetic approaches.
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Affiliation(s)
- Aluru Rammohan
- Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russian Federation.
| | - Alexey P Krinochkin
- Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russian Federation.,I. Ya. Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, 22 S. Kovalevskoy St., Ekaterinburg, 620219, Russian Federation
| | - Albert F Khasanov
- Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russian Federation.,I. Ya. Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, 22 S. Kovalevskoy St., Ekaterinburg, 620219, Russian Federation
| | - Dmitry S Kopchuk
- Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russian Federation.,I. Ya. Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, 22 S. Kovalevskoy St., Ekaterinburg, 620219, Russian Federation
| | - Grigory V Zyryanov
- Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russian Federation. .,I. Ya. Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, 22 S. Kovalevskoy St., Ekaterinburg, 620219, Russian Federation.
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8
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Sharif A, Sun HR, Xu WL, Gou BB, Yang L, Li Y, Chen J, Zhou L. A Dehydrogenative Inverse Electron Demand Diels-Alder Reaction for the Synthesis of Functionalized Pyranones. Org Lett 2022; 24:4316-4321. [PMID: 35699407 DOI: 10.1021/acs.orglett.2c01197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient dehydrogenative inverse electron demand Diels-Alder reaction of isopropyl and prenyl benzene derivatives with electron-deficient dienes followed by decarboxylation has been reported for the first time. The much broader substrate scope of dienophiles and electron-deficient dienes led to biologically valuable pyranones in good to excellent yields.
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Affiliation(s)
- Atif Sharif
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Huai-Ri Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Bo-Bo Gou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Lan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Yu Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
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9
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Lu Y, Duan X, Chen X, Yao M, Chen C, Zhu H, Luo Z, Zhang Y. A mild tetradehydro-Diels-Alder reaction of aryldiyne compounds affords exclusively linear products. Org Biomol Chem 2022; 20:3174-3182. [PMID: 35347333 DOI: 10.1039/d2ob00121g] [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
The thermal tetradehydro-Diels-Alder (TDDA) reaction for the synthesis of polysubstituted aromatic compounds remains underestimated probably due to the harsh conditions and multiproduct results. Herein, a mild intramolecular TDDA reaction of aryldiyne compounds is presented with linear naphthalenes only, exhibiting good functional group tolerance. The reaction is easy to operate and amenable to multigram-scale synthesis. From the preliminary work, it was found that the mild conditions may be the key to the completely linear product in the reactions.
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Affiliation(s)
- Yuling Lu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Xianxian Duan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Xia Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Meng Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Zengwei Luo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation. School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P. R. China.
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10
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Abstract
AbstractFor a long time, allenes—and cumulenic systems in general—played a relatively minor role in Diels–Alder cycloadditions. This situation has changed, since allenes are more readily available and as their unique stereochemical features in [4+2]cycloadditions are more widely recognized. This review presents a comprehensive overview of allenes in Diels–Alder processes using selected examples. Allenes in dienes, dienophiles and cycloadducts are covered, inter- and intramolecular Diels–Alder cycloadditions are discussed, and stereochemical features of the addition process are described. Areas of emerging importance are also covered, including allenic components in dehydro-Diels–Alder processes, and dendralenic allenes in Diels–Alder sequences for the rapid generation of target-relevant molecular complexity. Preparatively useful methods for allenic precursor synthesis are also discussed.1 Introduction2 Allenic Dienes2.1 Vinylallenes2.2 Bisallenes2.3 Cross-conjugated Allenes3 Allenic Dienophiles4 Intramolecular Diels–Alder Cycloadditions5 Allenic Cycloadducts6 Conclusions and Outlook
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Affiliation(s)
- Henning Hopf
- Institut für Organische Chemie, Technische Universität Braunschweig
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11
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Min KH, Iqbal N, Cho EJ. Ni-Catalyzed Reductive Coupling of Alkynes and Amides to Access Multi-Functionalized Indoles. Org Lett 2022; 24:989-994. [PMID: 35050641 DOI: 10.1021/acs.orglett.1c03971] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A nickel-catalyzed reductive coupling of alkynes and amides, followed by base-free transmetalation, proceeded selectively in the presence of an uncommon bidentate primary aminophosphine ligand to access highly functionalized indoles comprising biologically important trifluoromethyl groups and challenging electron-rich alkenyl groups at the 2- and 3-positions, respectively. Indole molecules were installed within natural products or drug molecules under mild conditions, and a trifluoromethylated analogue of a drug molecule (pravadoline) was also synthesized.
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Affiliation(s)
- Kwan Hong Min
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Naeem Iqbal
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
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12
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Zhang X, Shi H, Ji C, Wang J, Jiang L. Computational exploration for possible reaction pathways, regioselectivity, and influence of substrate in gold-catalyzed cycloaddition of cyanamides with enynamides. RSC Adv 2022; 12:22939-22945. [PMID: 36105958 PMCID: PMC9377310 DOI: 10.1039/d2ra02682a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022] Open
Abstract
The current work focuses on the DFT calculation of the rational mechanism and catalytic activity of the gold(i)-catalyzed isotetradehydro-Diels–Alder cycloaddition of cyanamides and enamides to substituted 2,6-diaminopyridines. IPrAuCl is used as a model catalyst to catalyze cyanamide and enynamide reactants with different substituents in DCM as a research system. DFT data indicates that the catalytic cycle starts from the triple bond coordination between the catalyst's gold cation and the enamide to obtain the gold π-complex, and the cyanamide attacks the alkynyl carbon atom from different directions to generate two reaction channels of five-membered and six-membered heterocycles, respectively. The calculation results show that the 2,6-diaminopyridine compounds produced by this catalytic reaction have lower activation energy and higher reactivity, that is, the pyridine skeleton structure can be easily obtained under mild reaction conditions. At the same time, electron-withdrawing substituents in the reactants are more helpful for the reaction. In addition to being in good agreement with the experimental data, the calculated results also provide an important contribution to the further understanding of the mechanism of such reactions. The current work focuses on the DFT calculation of the rational mechanism and catalytic activity of the gold(i)-catalyzed isotetradehydro-Diels–Alder cycloaddition of cyanamides and enamides to substituted 2,6-diaminopyridines.![]()
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Affiliation(s)
- Xinghui Zhang
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Haixiong Shi
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Caihong Ji
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Jianyi Wang
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
| | - Liping Jiang
- School of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou 730010, China
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13
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Shcherbakov NV, Chikunova EI, Dar'in D, Kukushkin VY, Dubovtsev AY. Redox-Neutral and Atom-Economic Route to β-Carbolines via Gold-Catalyzed [4 + 2] Cycloaddition of Indolylynamides and Cyanamides. J Org Chem 2021; 86:17804-17815. [PMID: 34812641 DOI: 10.1021/acs.joc.1c02119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Gold(I)-catalyzed [4 + 2] cycloaddition of indolylynamides and cyanamides (aminonitriles) is an efficient redox-neutral and atom-economic route to diversely substituted 1,3-diamino-β-carbolines. The protocol operates under mild conditions (Ph3PAuNTf2 5 mol %, DCE, 60 °C) with a good tolerance to functional groups (23 examples and yields up to 98%). The obtained β-carboline systems represent a versatile synthetic platform with modifiable substituents for successive functionalizations. Control experiments indicate the crucial role of both the nature of reactants and the identity of employed catalysts in the developed cycloaddition.
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Affiliation(s)
- Nikolay V Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Elena I Chikunova
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Alexey Yu Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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14
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Camedda N, Lanzi M, Bigi F, Maggi R, Maestri G. Ambient Synthesis of Tricyclic Naphthalenes via Stepwise Styryl-yne Dearomative Diels-Alder Cyclization. Org Lett 2021; 23:6536-6541. [PMID: 34369150 DOI: 10.1021/acs.orglett.1c02339] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A cascade of styrylynols promoted by MnO2 allows the synthesis of fused tricycles with a naphthalene core. The reaction occurs under ambient conditions, offering a practical synthetic tool because of the inexpensive and abundant manganese species. The method affords products through the sequential oxidation of a propargyl alcohol, stepwise Diels-Alder cyclization, and finally rearomatization. According to density functional theory, the usually unfavorable stepwise Diels-Alder mechanism is instead a general tool for eliciting otherwise challenging dearomative annulation.
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Affiliation(s)
- Nicola Camedda
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Matteo Lanzi
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Franca Bigi
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy.,IMEM-CNR, Parco Area delle Scienze 37/A, 43124 Parma, Italy
| | - Raimondo Maggi
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Giovanni Maestri
- Università di Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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15
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Shcherbakov NV, Dar’in DV, Kukushkin VY, Dubovtsev AY. Hetero-Tetradehydro-Diels–Alder Cycloaddition of Enynamides and Cyanamides: Gold-Catalyzed Generation of Diversely Substituted 2,6-Diaminopyridines. J Org Chem 2021; 86:7218-7228. [DOI: 10.1021/acs.joc.1c00558] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Nikolay V. Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry V. Dar’in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
- South Ural State University, 454080 Chelyabinsk, Russian Federation
| | - Alexey Yu. Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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16
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Chen X, Zhong C, Lu Y, Yao M, Guan Z, Chen C, Zhu H, Luo Z, Zhang Y. Practical access to fluorescent 2,3-naphthalimide derivatives via didehydro-Diels-Alder reaction. Chem Commun (Camb) 2021; 57:5155-5158. [PMID: 33900353 DOI: 10.1039/d1cc01437d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical and efficient approach for the synthesis of fluorescent 2,3-naphthalimide derivatives has been developed from readily available starting materials via an intramolecular didehydro-Diels-Alder reaction, which proceeded well under room temperature, exhibiting a wide substrate scope and good functional group tolerance. The practicability of this methodology has been verified by one-step synthesis of the environmentally sensitive fluorophore 6-DMN on a gram scale with a shorter time, fewer steps and less waste disposal, and without the utilization of toxic transition metals. The present experimental and computational studies support the crucial role of the propiolimide moiety in the transformation.
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Affiliation(s)
- Xia Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Cheng Zhong
- Hubei Key Laboratory on Organic and Polymeric Optoelectronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yuling Lu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Meng Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Zhenhua Guan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Zengwei Luo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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17
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Fluegel LL, Hoye TR. Hexadehydro-Diels-Alder Reaction: Benzyne Generation via Cycloisomerization of Tethered Triynes. Chem Rev 2021; 121:2413-2444. [PMID: 33492939 PMCID: PMC8008985 DOI: 10.1021/acs.chemrev.0c00825] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The hexadehydro-Diels-Alder (HDDA) reaction is the thermal cyclization of an alkyne and a 1,3-diyne to generate a benzyne intermediate. This is then rapidly trapped, in situ, by a variety of species to yield highly functionalized benzenoid products. In contrast to nearly all other methods of aryne generation, no other reagents are required to produce an HDDA benzyne. The versatile and customizable nature of the process has attracted much attention due not only to its synthetic potential but also because of the fundamental mechanistic insights the studies often afford. The authors have attempted to provide here a comprehensive compilation of publications appearing by mid-2020 that describe experimental results of HDDA reactions.
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Affiliation(s)
- Lucas L Fluegel
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Thomas R Hoye
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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18
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A DFT mechanistic study on oxidative dehydrogenative Diels-Alder reaction of alkylbenzenes. J Mol Graph Model 2021; 104:107839. [PMID: 33524922 DOI: 10.1016/j.jmgm.2021.107839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/18/2020] [Accepted: 01/05/2021] [Indexed: 11/23/2022]
Abstract
Cross-dehydrogenative Diels-Alder cycloaddition reaction between readily-available alkyl benzenes and electron-deficient dienophiles is an attractive synthetic route to access carbocyclic compounds which have high utility in the chemical and pharmaceutical industries. This work reports a study at the M06-2X/6-311G(d) and M06-2X/6-311++G(d,p) levels of theory on the reaction of alkyl benzenes with electron-deficient dienophiles in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as an oxidant and hydroquinone as an activator, so as to understand the chemoselectivity of the reaction (addition across the alkene functionality versus the ketone functionality), the role of the activator, the effects of substituents and the effect of solvent on the reaction. The results show the addition of the alkene bonds of methylstyrene across the alkene functionality of the electron-deficient dienophiles has generally low barriers compared to the addition across the carbonyl functionality of the electron-deficient dienophile. Powerful electron-withdrawing group (cyano) on the electron-deficient dienophile decrease the energy barrier for the cycloaddition and decrease the stability of the product whiles weak electron-withdrawing (bromine and chlorine) and electron-donating groups increase the energy barrier for the cycloaddition and decrease the stability of the product. The hydroquinone as an activator decreases the activation barrier for the Diels-Alder cycloaddition reaction.
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19
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Zhu B, Zhu L, Xia J, Huang S, Huang X. Gold-catalyzed cycloisomerization of enynamides: Regio- and stereoselective approach to tetracyclic spiroindolines. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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20
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Xu WL, Hu W, Zhao WM, Wang M, Chen J, Zhou L. Copper(I)/DDQ-Mediated Double-Dehydrogenative Diels-Alder Reaction of Aryl Butenes with 1,4-Diketones and Indolones. Org Lett 2020; 22:7169-7174. [PMID: 32902298 DOI: 10.1021/acs.orglett.0c02486] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A copper(I)/DDQ-mediated double-dehydrogenative Diels-Alder (DDDA) reaction of simple butenes with 1,4-diketones and indolones has been established for the first time. This strategy is based on a tandem double-dehydrogenation/Diels-Alder reaction from nonprefunctionalized starting materials, in which both a diene and dienophile were in situ generated via activation of fourfold inert C(sp3)-H bonds in one catalytic system.
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Affiliation(s)
- Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Wei Hu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Wei-Ming Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Min Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
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21
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Thadkapally S, Farshadfar K, Drew MA, Richardson C, Ariafard A, Pyne SG, Hyland CJT. Rhodium-catalysed tetradehydro-Diels-Alder reactions of enediynes via a rhodium-stabilized cyclic allene. Chem Sci 2020; 11:10945-10950. [PMID: 34094344 PMCID: PMC8162385 DOI: 10.1039/d0sc04390g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Efficient methods for the synthesis of fused-aromatic rings is a critical endeavour in the creation of new pharmaceuticals and materials. A direct method for preparing these systems is the tetradehydro-Diels-Alder reaction, however this is limited by the need for harsh reaction conditions. A potential, but underdeveloped, route to these systems is via transition metal-catalysed cycloaromatisation of ene-diynes. Herein, tethered unconjugated enediynes have been shown to undergo a facile room-temperature RhI-catalysed intramolecular tetradehydro-Diels-Alder reaction to produce highly substituted isobenzofurans, isoindolines and an indane. Furthermore, experimental and computational studies suggest a novel mechanism involving an unprecedented and complex RhI/RhIII/RhI/RhIII redox cycle involving the formation of an unusual strained 7-membered rhodacyclic allene intermediate and a RhIII-stabilized 6-membered ring allene complex.
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Affiliation(s)
- Srinivas Thadkapally
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Kaveh Farshadfar
- School of Physical Sciences, University of Tasmania Hobart TAS 7018 Australia.,Department of Chemistry, Islamic Azad University, Central Tehran Branch Poonak Tehran 1469669191 Iran
| | - Melanie A Drew
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Christopher Richardson
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Alireza Ariafard
- School of Physical Sciences, University of Tasmania Hobart TAS 7018 Australia
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Christopher J T Hyland
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
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22
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Ma X, Maier J, Wenzel M, Friedrich A, Steffen A, Marder TB, Mitrić R, Brixner T. Direct observation of o-benzyne formation in photochemical hexadehydro-Diels-Alder ( hν-HDDA) reactions. Chem Sci 2020; 11:9198-9208. [PMID: 34123168 PMCID: PMC8163437 DOI: 10.1039/d0sc03184d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reactive ortho-benzyne derivatives are believed to be the initial products of liquid-phase [4 + 2]-cycloadditions between a 1,3-diyne and an alkyne via what is known as a hexadehydro-Diels–Alder (HDDA) reaction. The UV/VIS spectroscopic observation of o-benzyne derivatives and their photochemical dynamics in solution, however, have not been reported previously. Herein, we report direct UV/VIS spectroscopic evidence for the existence of an o-benzyne in solution, and establish the dynamics of its formation in a photoinduced reaction. For this purpose, we investigated a bis-diyne compound using femtosecond transient absorption spectroscopy in the ultraviolet/visible region. In the first step, we observe excited-state isomerization on a sub-10 ps time scale. For identification of the o-benzyne species formed within 50–70 ps, and the corresponding photochemical hexadehydro-Diels–Alder (hν-HDDA) reactions, we employed two intermolecular trapping strategies. In the first case, the o-benzyne was trapped by a second bis-diyne, i.e., self-trapping. The self-trapping products were then identified in the transient absorption experiments by comparing their spectral features to those of the isolated products. In the second case, we used perylene for trapping and reconstructed the spectrum of the trapping product by removing the contribution of irrelevant species from the experimentally observed spectra. Taken together, the UV/VIS spectroscopic data provide a consistent picture for o-benzyne derivatives in solution as the products of photo-initiated HDDA reactions, and we deduce the time scales for their formation. We report the transient ultraviolet/visible absorption spectrum of an o-benzyne species in solution for the first time.![]()
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Affiliation(s)
- Xiaonan Ma
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute of Molecular Plus, Tianjin University No. 92 Weijin Road, Nankai District 300072 Tianjin China
| | - Jan Maier
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Michael Wenzel
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institut für Anorganische Chemie, Technische Universität Dortmund Otto-Hahn-Str.6 44227 Dortmund Germany
| | - Todd B Marder
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Roland Mitrić
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Tobias Brixner
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
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23
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Liu C, Deng G, Li X, Xu Y, Yu K, Chen W, Zhang H, Yang X. Transition-Metal-Free Synthesis of Electron Rich 1,3-Dienes via Base Promoted Isomerization of Propargylic Ethers. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901743] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Chunxiang Liu
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Xin Li
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Yiren Xu
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Kaili Yu
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Wen Chen
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resources; Ministry of Education and Yunnan Province; School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan; Yunnan University; 650091 Kunming P. R. China
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24
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Affiliation(s)
- Hongen Cao
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225002 Jiangsu People's Republic of China
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Research and Development Center for Fine Chemicals Guizhou University Guiyang 550025 Guizhou People's Republic of China
- School of Horticulture and Plant Protection Yangzhou University Yangzhou 225009 Jiangsu People's Republic of China
| | - Fenglin Chen
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225002 Jiangsu People's Republic of China
| | - Chenliang Su
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 People's Republic of China
| | - Lei Yu
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225002 Jiangsu People's Republic of China
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25
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Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Alicante, Apdo. 99, Alicante E-03080, Spain
| | - Leiv K. Sydnes
- Department of Chemistry, University of Bergen, Allégt. 41, Bergen NO-5007, Norway
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Alicante, Apdo. 99, Alicante E-03080, Spain
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26
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Huang W, Chen S, Yang J, El‐Harairy A, Wang X, Li M, Gu Y. Modular Synthesis of Bicyclic and Tricyclic (Aza‐) Arenes from Nucleophilic (Aza‐)Arenes with Electrophilic Side Arms via [4+2] Annulation Reactions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- 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 EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Shaomin Chen
- 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 EngineeringHuazhong University 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 EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Ahmed El‐Harairy
- 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 EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Xin Wang
- 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 EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Minghao Li
- 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 EngineeringHuazhong University 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 EngineeringHuazhong University 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, LanzhouInstitute of Chemical Physics Lanzhou 730000 People's Republic of China
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27
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Mitake A, Nagai R, Sekine A, Takano H, Sugimura N, Kanyiva KS, Shibata T. Consecutive HDDA and TDDA reactions of silicon-tethered tetraynes for the synthesis of dibenzosilole-fused polycyclic compounds and their unique reactivity. Chem Sci 2019; 10:6715-6720. [PMID: 31367326 PMCID: PMC6625486 DOI: 10.1039/c9sc00960d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 05/25/2019] [Indexed: 12/28/2022] Open
Abstract
Silicon-tethered tetraynes possessing a 1,3-diyne moiety underwent consecutive hexadehydro- and tetradehydro-Diels-Alder reactions to give a series of fused polycyclic aromatic compounds containing a dibenzosilole skeleton. The benzene ring in the product acted as a 1,3-diene and reacted with the active alkyne as well as oxygen to provide [4 + 2] cycloadducts.
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Affiliation(s)
- Akihito Mitake
- Department of Chemistry and Biochemistry , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan .
| | - Rikako Nagai
- Department of Chemistry and Biochemistry , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan .
| | - Ayato Sekine
- Department of Chemistry and Biochemistry , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan .
| | - Hideaki Takano
- Department of Chemistry and Biochemistry , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan .
| | - Natsuhiko Sugimura
- Materials Characterization Central Laboratory , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan
| | - Kyalo Stephen Kanyiva
- Global Center for Science and Engineering , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry , School of Advanced Science and Engineering , Waseda University , Shinjuku , Tokyo 169-8555 , Japan .
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28
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Duangkamol C, Batsomboon P, Stiegman AE, Dudley GB. Microwave Heating Outperforms Conventional Heating for a Thermal Reaction that Produces a Thermally Labile Product: Observations Consistent with Selective Microwave Heating. Chem Asian J 2019; 14:2594-2597. [PMID: 31157510 DOI: 10.1002/asia.201900625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 05/31/2019] [Indexed: 12/14/2022]
Abstract
Microwave (MW) heating is more effective than conventional (CONV) heating for promoting a high-temperature oxidative cycloisomerization reaction that was previously reported as a key step in a total synthesis of the natural product illudinine. The thermal reaction pathway as envisioned is an inverse electron-demand dehydro-Diels-Alder reaction with in situ oxidation to generate a substituted isoquinoline, which itself is unstable to the reaction conditions. Observed reaction yields were higher at a measured bulk temperature of 200 °C than at 180 °C or 220 °C; at 24 hours than at earlier or later time points; and when the reaction solution was heated using MW energy as opposed to CONV heating with a metal heat block. Selective MW heating of polar solute aggregates is postulated to explain these observations.
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Affiliation(s)
- Chuthamat Duangkamol
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26505, USA
| | - Paratchata Batsomboon
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26505, USA
| | - Albert E Stiegman
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA
| | - Gregory B Dudley
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26505, USA
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29
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Ma Y, Lv J, Liu C, Yao X, Yan G, Yu W, Ye J. Electrochemical [4+2] Annulation-Rearrangement-Aromatization of Styrenes: Synthesis of Naphthalene Derivatives. Angew Chem Int Ed Engl 2019; 58:6756-6760. [PMID: 30882992 DOI: 10.1002/anie.201902315] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Indexed: 11/09/2022]
Abstract
We report the first electrochemical strategy to synthesize functionalized naphthalene derivatives through [4+2] annulation-rearrangement-aromatization from styrenes under mild conditions. The electrolysis does not require metals, oxidants and high valence substrates, indicating the atom and step-economy ideals. The dehydrodimer produced through [4+2] cycloaddition of 4-methoxy α-methyl styrene is isolated and proved to be the key intermediate for the following oxydehydrogenation to form carbon cation, which undergoes rearrangement-aromatization to afford the final products. This reaction represents a powerful access to construct multi-substituted naphthalene blocks in a single step.
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Affiliation(s)
- Yueyue Ma
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jufeng Lv
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Chengyu Liu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Xiantong Yao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Guoming Yan
- Shanghai Zhongxi Sunve Pharmaceutical Co., Ltd., No. 158 Minle Road, Fengxian District, Shanghai, 201419, China
| | - Wei Yu
- Shanghai Zhongxi Sunve Pharmaceutical Co., Ltd., No. 158 Minle Road, Fengxian District, Shanghai, 201419, China
| | - Jinxing Ye
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
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30
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Ma Y, Lv J, Liu C, Yao X, Yan G, Yu W, Ye J. Electrochemical [4+2] Annulation‐Rearrangement‐Aromatization of Styrenes: Synthesis of Naphthalene Derivatives. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902315] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yueyue Ma
- Engineering Research Centre of Pharmaceutical Process ChemistryMinistry of EducationShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Jufeng Lv
- Engineering Research Centre of Pharmaceutical Process ChemistryMinistry of EducationShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Chengyu Liu
- Engineering Research Centre of Pharmaceutical Process ChemistryMinistry of EducationShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Xiantong Yao
- Engineering Research Centre of Pharmaceutical Process ChemistryMinistry of EducationShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Guoming Yan
- Shanghai Zhongxi Sunve Pharmaceutical Co., Ltd. No. 158 Minle Road, Fengxian District Shanghai 201419 China
| | - Wei Yu
- Shanghai Zhongxi Sunve Pharmaceutical Co., Ltd. No. 158 Minle Road, Fengxian District Shanghai 201419 China
| | - Jinxing Ye
- Engineering Research Centre of Pharmaceutical Process ChemistryMinistry of EducationShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
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31
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Xu W, Tang L, Ge C, Chen J, Zhou L. Synthesis of Tetrahydroisoindolinones via a Metal‐Free Dehydrogenative Diels‐Alder Reaction. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801436] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wen‐Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry& Materials Science, National Demonstration Center for Experimental Chemistry EducationNorthwest University Xi'an 710127 People's Republic of China
| | - Lei Tang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry& Materials Science, National Demonstration Center for Experimental Chemistry EducationNorthwest University Xi'an 710127 People's Republic of China
| | - Chen‐Yu Ge
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry& Materials Science, National Demonstration Center for Experimental Chemistry EducationNorthwest University Xi'an 710127 People's Republic of China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry& Materials Science, National Demonstration Center for Experimental Chemistry EducationNorthwest University Xi'an 710127 People's Republic of China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry& Materials Science, National Demonstration Center for Experimental Chemistry EducationNorthwest University Xi'an 710127 People's Republic of China
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32
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33
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Loesche A, Brückner R. Dienolates of Cycloalkenones and α,β‐Unsaturated Esters Form Diels–Alder Adducts by a Michael/Michael‐Tandem Reaction Rather Than in One Step. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ann‐Christine Loesche
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
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34
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Liu B, Mao C, Hu Q, Yao L, Hu Y. Direct methylation and carbonylation of in situ generated arynes via HDDA-Wittig coupling. Org Chem Front 2019. [DOI: 10.1039/c9qo00621d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A high-efficiency HDDA-Wittig coupling strategy for synthesis of fully functionalized benzenes is reported. Direct methylation and carbonylation of aryne intermediates reacted with phosphorus ylides to form the carbonylated 2,3-dihydro-1H-indenes.
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Affiliation(s)
- Baohua Liu
- Key Laboratory of Functional Molecular Solids
- Ministry of Education; Anhui Laboratory of Molecule-Based Materials
- State Laboratory Cultivation Base; College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Chunyan Mao
- Key Laboratory of Functional Molecular Solids
- Ministry of Education; Anhui Laboratory of Molecule-Based Materials
- State Laboratory Cultivation Base; College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Qiong Hu
- Key Laboratory of Functional Molecular Solids
- Ministry of Education; Anhui Laboratory of Molecule-Based Materials
- State Laboratory Cultivation Base; College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Liangliang Yao
- Key Laboratory of Functional Molecular Solids
- Ministry of Education; Anhui Laboratory of Molecule-Based Materials
- State Laboratory Cultivation Base; College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Yimin Hu
- Key Laboratory of Functional Molecular Solids
- Ministry of Education; Anhui Laboratory of Molecule-Based Materials
- State Laboratory Cultivation Base; College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
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35
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Wang HF, Wang SY, Qin TZ, Zi W. Dual Gold-Catalyzed Formal Tetradehydro-Diels-Alder Reactions for the Synthesis of Carbazoles and Indolines. Chemistry 2018; 24:17911-17914. [PMID: 30311979 DOI: 10.1002/chem.201804529] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 09/30/2018] [Indexed: 01/10/2023]
Abstract
This work reports a dual gold-catalyzed tetradehydro-Diels-Alder reaction for the synthesis of nitrogen-containing aromatic heterocycles. Under the catalytic system (IPrAuNTf2 /DIPEA), indolines and carbazoles as well as other N-containing aromatic heterocycles were prepared in high yields with good functional group tolerance. Unlike the traditional thermal tetradehydro-Diels-Alder reactions, diluted reaction concentration and radical prohibitors are not required for this protocol. Experimental data support a mechanism involving gold vinylidene species, which undergoes a 6 π electrocyclization, followed with 1,2-hydrogen shift.
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Affiliation(s)
- Hong-Fa Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Shi-Yue Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Tian-Zhu Qin
- State Key Laboratory and Institute of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Weiwei Zi
- State Key Laboratory and Institute of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, China
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36
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Shibata T, Sekine A, Mitake A, Kanyiva KS. Intramolecular Consecutive Dehydro-Diels-Alder Reaction for the Catalytic and Enantioselective Construction of Axial Chirality. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Ayato Sekine
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Akihito Mitake
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kyalo Stephen Kanyiva
- Global Center of Science and Engineering; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
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37
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Shibata T, Sekine A, Mitake A, Kanyiva KS. Intramolecular Consecutive Dehydro-Diels-Alder Reaction for the Catalytic and Enantioselective Construction of Axial Chirality. Angew Chem Int Ed Engl 2018; 57:15862-15865. [DOI: 10.1002/anie.201810174] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Ayato Sekine
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Akihito Mitake
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kyalo Stephen Kanyiva
- Global Center of Science and Engineering; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
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38
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Knutson PC, Fredericks HE, Ferreira EM. Synthesis of 1,3-Diynes via Cadiot-Chodkiewicz Coupling of Volatile, in Situ Generated Bromoalkynes. Org Lett 2018; 20:6845-6849. [PMID: 30336061 PMCID: PMC6217962 DOI: 10.1021/acs.orglett.8b02975] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A convenient Cadiot-Chodkiewicz protocol that facilitates the use of low molecular weight alkyne coupling partners is described. The method entails an in situ elimination from a dibromoolefin precursor and immediate subjection to copper-catalyzed conditions, circumventing the hazards of volatile brominated alkynes. The scope of this method is described, and the internal 1,3-diyne products are preliminarily evaluated in ruthenium-catalyzed azide-alkyne cycloadditions.
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Affiliation(s)
- Phil C. Knutson
- Department of Chemistry, University of Georgia, Athens, Georgia 30602,
United States
| | | | - Eric M. Ferreira
- Department of Chemistry, University of Georgia, Athens, Georgia 30602,
United States
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39
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Trolez Y. The Domino Hexadehydro-Diels-Alder Reaction: An Elegant Way toward Polyacenes. Chem 2018. [DOI: 10.1016/j.chempr.2018.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Xu WL, Zhang H, Hu YL, Yang H, Chen J, Zhou L. Metal-Free Dehydrogenative Diels-Alder Reactions of Prenyl Derivatives with Dienophiles via a Thermal Reversible Process. Org Lett 2018; 20:5774-5778. [PMID: 30182721 DOI: 10.1021/acs.orglett.8b02469] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An efficient dehydrogenative Diels-Alder reaction of prenyl derivatives with dienophiles has been developed. The reaction exhibits broad substrate scope and provides efficient access to cyclohexene derivatives with good to excellent yields. A reasonable mechanism involving a metal-free thermal reversible process is proposed.
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Affiliation(s)
- Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P.R. China
| | - Heng Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P.R. China
| | - Yu-Long Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P.R. China
| | - Hui Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P.R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P.R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P.R. China
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41
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Kong X, Yang S, Yu F, Vasamsetty L, Liu J, Liu S, Liu X, Fang X. Cyclopentadienone Formation from β,γ-Unsaturated Cyclopentenones and Its Application in Diels-Alder Reactions. J Org Chem 2018; 83:8953-8961. [PMID: 29975528 DOI: 10.1021/acs.joc.8b01150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report that α-acyloxy-β,γ-unsaturated cyclopentenones were used as starting substrates to make various trisubstituted cyclopentadienones. The substrates are easily available in one step from our previously developed protocol, and the potential of this cyclopentadienone formation method was demonstrated in a series of Diels-Alder reactions, forming dimerization products, dimethyl phthalate derivatives, and polyaryl benzene compounds.
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Affiliation(s)
- Xiangwen Kong
- Liaoning University , Shenyang , Liaoning 110036 , China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350100 , China
| | - Fang Yu
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350100 , China
| | - Laxmaiah Vasamsetty
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350100 , China
| | - Jian Liu
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350100 , China
| | - Shuhua Liu
- Shandong Analysis and Test Center , Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250014 , China
| | - Xiaozhi Liu
- Liaoning University , Shenyang , Liaoning 110036 , China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350100 , China
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42
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43
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Riveira MJ, Diez CM, Mischne MP, Mata EG. [2 + 2 + 2]-Cycloaddition Reactions Using Immobilized Alkynes. A Proof of Concept for an Integral Use of the Outcoming Products in Solid-Phase Synthetic Methodologies. J Org Chem 2018; 83:10001-10014. [DOI: 10.1021/acs.joc.8b01378] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Martín J. Riveira
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Cintia M. Diez
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Mirta P. Mischne
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Ernesto G. Mata
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK, Rosario, Argentina
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44
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Zhang G, Lin Y, Luo X, Hu X, Chen C, Lei A. Oxidative [4+2] annulation of styrenes with alkynes under external-oxidant-free conditions. Nat Commun 2018; 9:1225. [PMID: 29581484 PMCID: PMC5964314 DOI: 10.1038/s41467-018-03534-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/19/2018] [Indexed: 11/23/2022] Open
Abstract
The sequenced Diels–Alder/oxidation reaction represents a powerful route for the construction of aromatic compounds in organic synthesis. The oxidative Diels–Alder reaction with H2 evolution would be a more ideal approach that can avoid the additional oxidation procedure and stoichiometric oxidant. Herein, an oxidative [4 + 2] annulation reaction of styrene derivatives with electron-rich dienophiles accompanying the H2 generation has been developed by using the synergistic merger of photoredox and cobaloxime catalyst. With respect to atom and step-economy ideals, this dual catalytic system enables the formation of high-value molecules from feedstock chemicals in a single step under room temperature. A sequence of a Diels–Alder reaction and oxidation is a powerful route to valuable aromatic compounds. Here, the authors report a more atom-economical oxidant-free strategy involving a Diels–Alder with H2 evolution under noble-metal-free photoredox conditions.
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Affiliation(s)
- Guoting Zhang
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei, 430072, China
| | - Yulin Lin
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei, 430072, China
| | - Xu Luo
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei, 430072, China
| | - Xia Hu
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei, 430072, China
| | - Cong Chen
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei, 430072, China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei, 430072, China. .,State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China.
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45
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Mun HJ, Seong EY, Ahn KH, Kang EJ. Fe(II)/Fe(III)-Catalyzed Intramolecular Didehydro-Diels–Alder Reaction of Styrene-ynes. J Org Chem 2018; 83:1196-1203. [DOI: 10.1021/acs.joc.7b02672] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hyeon Jin Mun
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Eun Young Seong
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Kwang-Hyun Ahn
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Eun Joo Kang
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
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46
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Wang Y, Hoye TR. Intramolecular Capture of HDDA-Derived Benzynes: (i) 6- to 12-Membered Ring Formation, (ii) Internally (vis-à-vis Remotely) Tethered Traps, and (iii) Role of the Rate of Trapping by the Benzynophile. Org Lett 2018; 20:88-91. [PMID: 29244510 DOI: 10.1021/acs.orglett.7b03436] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reported here are studies that have established novel features of the hexadehydro-Diels-Alder reaction of substrates containing tethered trapping moieties. Products having new structural motifs can be created. (i) Medium-sized fused rings can be produced by varying the length of the tether. (ii) The tether can emanate from an atom within the linker unit that joins the 1,3-diyne and diynophile. (iii) The importance of the rate of trapping by the benzynophile is established.
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Affiliation(s)
- Yuanxian Wang
- Department of Chemistry, 207 Pleasant Street SE, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Thomas R Hoye
- Department of Chemistry, 207 Pleasant Street SE, University of Minnesota , Minneapolis, Minnesota 55455, United States
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47
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Hu X, Zhang G, Bu F, Lei A. Selective Oxidative [4+2] Imine/Alkene Annulation with H2
Liberation Induced by Photo-Oxidation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711359] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xia Hu
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Guoting Zhang
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Faxiang Bu
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Aiwen Lei
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
- Lanzhou Institute of Chemical Physics Chinese Academy of Sciences; Lanzhou 730000 P.R. China
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48
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Hu X, Zhang G, Bu F, Lei A. Selective Oxidative [4+2] Imine/Alkene Annulation with H2
Liberation Induced by Photo-Oxidation. Angew Chem Int Ed Engl 2018; 57:1286-1290. [DOI: 10.1002/anie.201711359] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 11/22/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xia Hu
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Guoting Zhang
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Faxiang Bu
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Aiwen Lei
- The Institute for Advanced Studies, IAS, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
- Lanzhou Institute of Chemical Physics Chinese Academy of Sciences; Lanzhou 730000 P.R. China
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49
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Wu X, Zhu HJ, Zhao SB, Chen SS, Luo YF, Li YG. An Asymmetric Dehydrogenative Diels–Alder Reaction for the Synthesis of Chiral Tetrahydrocarbazole Derivatives. Org Lett 2017; 20:32-35. [DOI: 10.1021/acs.orglett.7b03251] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiang Wu
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hai-Jie Zhu
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Shi-Bao Zhao
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Shu-Sen Chen
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yun-Fei Luo
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - You-Gui Li
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
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50
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Duret G, Le Fouler V, Bisseret P, Bizet V, Blanchard N. Diels-Alder and Formal Diels-Alder Cycloaddition Reactions of Ynamines and Ynamides. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700986] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Guillaume Duret
- CNRS, LCM UMR 7509; Université de Strasbourg; 67000 Strasbourg France
| | - Vincent Le Fouler
- CNRS, LCM UMR 7509; Université de Strasbourg; 67000 Strasbourg France
| | - Philippe Bisseret
- CNRS, LCM UMR 7509; Université de Strasbourg; 67000 Strasbourg France
| | - Vincent Bizet
- CNRS, LCM UMR 7509; Université de Strasbourg; 67000 Strasbourg France
| | - Nicolas Blanchard
- CNRS, LCM UMR 7509; Université de Strasbourg; 67000 Strasbourg France
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