1
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Diao D, Baidiuk A, Chaussy L, De Assis Modenez I, Ribas X, Réglier M, Martin-Diaconescu V, Nava P, Simaan AJ, Martinez A, Colomban C. Light-Induced Reactivity Switch at O 2-Activating Bioinspired Copper(I) Complexes. JACS AU 2024; 4:1966-1974. [PMID: 38818064 PMCID: PMC11134348 DOI: 10.1021/jacsau.4c00184] [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: 02/28/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 06/01/2024]
Abstract
Using light to unveil unexplored reactivities of earth-abundant metal-oxygen intermediates is a formidable challenge, given the already remarkable oxidation ability of these species in the ground state. However, the light-induced reactivity of Cu-O2 intermediates still remains unexplored, due to the photoejection of O2 under irradiation. Herein, we describe a photoinduced reactivity switch of bioinspired O2-activating CuI complexes, based on the archetypal tris(2-pyridyl-methyl)amine (TPA) ligand. This report represents a key precedent for light-induced reactivity switch in Cu-O2 chemistry, obtained by positioning C-H substrates in close proximity of the active site. Open and caged CuI complexes displaying an internal aryl ether substrate were evaluated. Under light, a Cu-O2 mediated reaction takes place that induces a selective conversion of the internal aryl ether unit to a phenolate-CH2- moiety with excellent yields. This light-induced transformation displays high selectivity and allows easy postfunctionalization of TPA-based ligands for straightforward preparation of challenging heteroleptic structures. In the absence of light, O2 activation results in the standard oxidative cleavage of the covalently attached substrate. A reaction mechanism that supports a monomeric cupric-superoxide-dependent reactivity promoted by light is proposed on the basis of reactivity studies combined with (TD-) DFT calculations.
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Affiliation(s)
- Donglin Diao
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Anna Baidiuk
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Leo Chaussy
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | | | - Xavi Ribas
- Institut
de Quimica Computacional i Catalisi (IQCC), Departament de Quimica, Universitat de Girona, Girona E-17003, Catalonia, Spain
| | - Marius Réglier
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | | | - Paola Nava
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - A. Jalila Simaan
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Alexandre Martinez
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Cédric Colomban
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
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2
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Cai LY, Song XQ, Wang K, Zhang Y, Zhao HW. Pd-catalyzed decarboxylative 1,4-addition reactions of benzofuran-based azadienes with allyl phenyl carbonates. Org Biomol Chem 2023; 21:6556-6564. [PMID: 37525936 DOI: 10.1039/d3ob00968h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Under the catalysis of Pd(OAc)2/dppf/Na2CO3, the decarboxylative 1,4-addition reaction of benzofuran-based azadienes with allyl phenyl carbonates took place easily and delivered the desired products in reasonable chemical yields. The chemical structure of the target compounds was clearly identified by single crystal X-ray structural analysis.
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Affiliation(s)
- Lu-Yu Cai
- College of Life Science and Bio-engineering, Beijing University of Technology, Beijing 100124, P. R. China.
| | - Xiu-Qing Song
- Large-scale Instruments and Equipments Sharing Platform, Beijing University of Technology, Beijing 100124, P. R. China
| | - Kuo Wang
- College of Life Science and Bio-engineering, Beijing University of Technology, Beijing 100124, P. R. China.
| | - Yue Zhang
- College of Life Science and Bio-engineering, Beijing University of Technology, Beijing 100124, P. R. China.
| | - Hong-Wu Zhao
- College of Life Science and Bio-engineering, Beijing University of Technology, Beijing 100124, P. R. China.
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3
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Lee Y, Nam YS, Kim SY, Ki JE, Lee HG. Mechanistic duality of indolyl 1,3-heteroatom transposition. Chem Sci 2023; 14:7688-7698. [PMID: 37476715 PMCID: PMC10355096 DOI: 10.1039/d3sc00716b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/15/2023] [Indexed: 07/22/2023] Open
Abstract
A novel mechanistic duality has been revealed from the indolyl 1,3-heteroatom transposition (IHT) of N-hydroxyindole derivatives. A series of in-depth mechanistic investigations suggests that two separate mechanisms are operating simultaneously. Moreover, the relative contribution of each mechanistic pathway, the energy barrier for each pathway, and the identity of the primary pathway were shown to be the functions of the electronic properties of the substrate system. Based on the mechanistic understanding obtained, a mechanism-driven strategy for the general and efficient introduction of a heteroatom at the 3-position of indole has been developed. The reaction developed exhibits a broad substrate scope to provide the products in various forms of the functionalised indole. Moreover, the method is applicable to the introduction of both oxygen- and nitrogen-based functional groups.
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Affiliation(s)
- Yujin Lee
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Yun Seung Nam
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Soo Young Kim
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Jeong Eun Ki
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - Hong Geun Lee
- Department of Chemistry, Seoul National University 1, Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
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4
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Baidilov D, Elkin PK, Athe S, Rawal VH. Rapid Access to 2,2-Disubstituted Indolines via Dearomative Indolic-Claisen Rearrangement: Concise, Enantioselective Total Synthesis of (+)-Hinckdentine A. J Am Chem Soc 2023. [PMID: 37364288 DOI: 10.1021/jacs.3c03611] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
The construction of 2,2-disubstituted indolines has long presented a synthetic challenge without any general solutions. Herein, we report a robust protocol for the dearomative Meerwein-Eschenmoser-Claisen rearrangement of 3-indolyl alcohols that provides efficient access to 2-substituted and 2,2-disubstituted indolines. These versatile subunits are useful for natural product synthesis and medicinal chemistry. The title [3,3] sigmatropic rearrangement proceeds in generally excellent yield and transfers the C3-indolic alcohol chirality to the C2 position with high fidelity, thus providing a reliable method for the construction of enantioenriched 2,2-disubstituted indolines. The power of this methodology is demonstrated through the concise and strategically unique total synthesis of the marine natural product hinckdentine A, which features a dearomative Claisen rearrangement, a diastereocontrolled hydrogenation of the alkene product, a one-pot amide-to-oxime conversion using Vaska's complex, and a regioselective late-stage tribromination.
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Affiliation(s)
- Daler Baidilov
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Pavel K Elkin
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Sudhakar Athe
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Viresh H Rawal
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
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5
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Niu T, Liu LX, Wu B, Zhou YG. Synthesis of Tridentate PNO Ligands with Planar Chirality and Application in Iridium-Catalyzed Asymmetric Hydrogenation of Simple Ketones. J Org Chem 2023. [PMID: 36802570 DOI: 10.1021/acs.joc.2c02358] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
A series of [2,2]paracyclophane-based tridentate PNO ligands with planar chirality were designed and synthesized. The easily prepared chiral tridentate PNO ligands were successfully applied to the iridium-catalyzed asymmetric hydrogenation of simple ketones, giving chiral alcohols with high efficiency and excellent enantioselectivities (up to 99% yield and >99% ee). Control experiments revealed the indispensability of both N-H and O-H in the ligands.
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Affiliation(s)
- Tong Niu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Xia Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
| | - Bo Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
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6
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Liu Y, Liu X, Feng X. Recent advances in metal-catalysed asymmetric sigmatropic rearrangements. Chem Sci 2022; 13:12290-12308. [PMID: 36382273 PMCID: PMC9629009 DOI: 10.1039/d2sc03806d] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/22/2022] [Indexed: 09/22/2023] Open
Abstract
Asymmetric sigmatropic rearrangement is a powerful organic transformation via substrate-reorganization to efficiently increase molecular complexity from readily accessible starting materials. In particular, a high level of diastereo- and enantioselectivity can be readily accessed through well-defined and predictable transition states in [3,3], [2,3]-sigmatropic rearrangements, which have been widely applied in the synthesis of various chiral building blocks, natural products, and pharmaceuticals. In recent years, catalytic asymmetric sigmatropic rearrangements involving chiral metal complexes to induce stereocontrol have been intensively studied. This review presents an overview of metal-catalysed enantioselective versions of sigmatropic rearrangements in the past two decades, mainly focusing on [3,3], [2,3], and [1,3]-rearrangements, to show the development of substrate design, new catalyst exploitation, and novel cascade processes. In addition, their application in the asymmetric synthesis of complex natural products is also exemplified.
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Affiliation(s)
- Yangbin Liu
- Institute of Chemical Biology, Shenzhen Bay Laboratory Shenzhen 518132 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Institute of Chemical Biology, Shenzhen Bay Laboratory Shenzhen 518132 China
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
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7
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Chen W, Xu T, Zhu G, Guo B, Tang L, Wang J. Concise Total Syntheses of Amorfrutin A and B. ChemistrySelect 2022. [DOI: 10.1002/slct.202202968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenzhang Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University 9 Beijing Road 550004 Guiyang China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 9 Beijing Road 550004 Guiyang China
| | - Tingxiao Xu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 9 Beijing Road 550004 Guiyang China
- College of Pharmacy Guizhou Medical University 9 Beijing Road 550004 Guiyang China
| | - Gaofeng Zhu
- State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University 9 Beijing Road 550004 Guiyang China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 9 Beijing Road 550004 Guiyang China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases Guizhou Medical University 9 Beijing Road 550004 Guiyang China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University 9 Beijing Road 550004 Guiyang China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 9 Beijing Road 550004 Guiyang China
| | - Jianta Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University 9 Beijing Road 550004 Guiyang China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 9 Beijing Road 550004 Guiyang China
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8
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Zhang G, Sun S, Hou S, Xu J. Diverse and chemoselective sigmatropic shift rearrangements of multisubstituted N, O-diarylhydroxylamines. Org Biomol Chem 2022; 20:5470-5480. [PMID: 35775435 DOI: 10.1039/d2ob00771a] [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
N,O-Diarylhydroxylamines generally favor the [3,3] sigmatropic shift rearrangement. Possible N/O[1,3] sigmatropic shift rearrangements of multisubstituted N,O-diarylhydroxylamines were investigated experimentally with rationally designed substrates, which were generally in situ prepared from suitable nitroaryl halides and N-arylhydroxylamines via aromatic nucleophilic substitution. The results indicate that both N- and O-(2,4,6-trimethylphenyl)hydroxylamines still favor the [3,3] sigmatropic shift followed by tautomerization rather than N[1,3] and O[1,3] sigmatropic shifts and the rearranged products of N-(2,4,6-trimethylphenyl)hydroxylamines further undergo an intramolecular nucleophilic addition to afford dibenzo[b,d]furan-4a(9bH)-amine derivatives, while N-(4-mono- and 3,5-disubstituted phenyl)-O-(2,4,6-trinitrophenyl)hydroxylamines favorably first undergo the O[1,3] sigmatropic shift followed by tandem Smiles rearrangement and amide/ester exchange reactions, generating 2-arylaminoaryl benzoate derivatives. N-Phenyl-O-(2,4,6-trinitrophenyl)hydroxylamines undergo tandem double O[1,3] sigmatropic shift rearrangement to produce formal O[1,5] shift products. However, O-(2,6-dinitrophenyl)-N-(4-substituted phenyl)hydroxylamines undergo tandem O[1,3] and double [3,3] sigmatropic shift rearrangements to give formal 3,5-shift products. The proposed mechanism is rationalized by density functional theory (DFT) calculations. The current investigation provides not only a comprehensive understanding of the chemoselective sigmatropic shift rearrangements of N,O-diarylhydroxylamines, but also some novel synthetic strategies for dibenzo[b,d]furanamines, diarylamines, diaryl ethers, 2'-amino-[1,1'-biphenyl]-2(1H)-one, and 2'-amino-[1,1'-biaryl]-4-ol derivatives.
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Affiliation(s)
- Guangyu Zhang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Simin Sun
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Shili Hou
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
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9
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Zhang Y, Chen Y. Recent advances in catalytic asymmetric [1,3]-rearrangement reactions. Org Chem Front 2022. [DOI: 10.1039/d2qo01027e] [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
This review covering the recent advances of asymmetric 1,3-rearrangement reactions is divided into four different fields, including transition metal catalysis, nucleophilic catalysis, Brønsted acid catalysis and Lewis acid catalysis.
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Affiliation(s)
- Yulong Zhang
- College of Chemistry, Chongqing Normal University, Chongqing 401331, China
| | - Yushuang Chen
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
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10
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Zhang G, Xu J. A four-step cascade reaction involving O[1,3] sigmatropic shift and Smiles rearrangements as key steps. NEW J CHEM 2022. [DOI: 10.1039/d2nj01393b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
4-Nitroaryl halides and N-acyl-N-arylhydroxyamines undergo cascade aromatic nucleophilic substitution-O[1,3] sigmatropic shift-Smiles rearrangement-amide and ester exchange reaction, affording 2-((4-nitroaryl)amino)aryl carboxylates.
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Affiliation(s)
- Guangyu Zhang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
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11
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Momiyama N, Honda Y, Suzuki T, Jongwohan C. Computational Studies on Reaction Mechanisms and Origin of Stereoselectivity in the [1,3]‐Rearrangement of Ene‐Aldimines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Norie Momiyama
- Institute for Molecular Science Okazaki, Aichi 444-8787 Japan
- SOKENDAI The Graduate University for Advanced Studies) Okazaki, Aichi 444-8787 Japan
| | - Yasushi Honda
- West Japan Office, HPC Systems Inc. 646 Nijohanjikicho, Shimogyo-ku Kyoto 600-8412 Japan
| | | | - Chanantida Jongwohan
- Institute for Molecular Science Okazaki, Aichi 444-8787 Japan
- SOKENDAI The Graduate University for Advanced Studies) Okazaki, Aichi 444-8787 Japan
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12
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Kobayashi S, Tamura T, Koshishiba M, Yasumoto T, Shimizu S, Kintaka T, Nagai K. Total Synthesis, Structure Revision, and Neuroprotective Effect of Hericenones C-H and Their Derivatives. J Org Chem 2021; 86:2602-2620. [PMID: 33492133 DOI: 10.1021/acs.joc.0c02681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first total syntheses of hericenones C-H and "putative 3-hydroxyhericenone F" were achieved. Highlights of the synthesis include the straightforward construction of the resorcinol core and geranyl side chain, assembly of the natural product skeleton by sequential O-geranylation and a clay/zeolite-mediated O → C rearrangement reaction, and a biomimetic cyclization to form a variety of bicyclic natural hericenones and their congeners. The structure of the "putative 3-hydroxyhericenone F" was revised as the 5-exo cyclization product (named: hericenone Z) of epoxyhericenone C through in-depth analyses of the cyclization modes in addition to NMR spectroscopic studies. To gain insights into the biological functions of geranyl-resorcinols in Hericium erinaceus, potential neuroprotective effects against endoplasmic reticulum (ER) stress-dependent cell death were evaluated systematically to clarify a fundamental structure-activity relationship. Among the compounds assayed, the linoleate-containing hericenone analogue, i.e., the regioisomer of hericene D, was found to possess the most potent neuroprotective effect against tunicamycin and thapsigargin-induced ER stress-dependent cell death.
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Affiliation(s)
- Shoji Kobayashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Tomoki Tamura
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Mizuho Koshishiba
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Takeshi Yasumoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Satoshi Shimizu
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Tomoki Kintaka
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Kaoru Nagai
- Department of Food and Nutrition, Faculty of Human Life Science, Senri Kinran University, 5-25-1 Fujishirodai, Suita, Osaka 565-0873, Japan
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13
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Synthesis of pyrrole-ferrocene ensembles and their rearrangement into 2-(ferrocenylmethyl)-1,2-dihydro-3H-pyrrol-3-ones. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Alam MN, Dash SR, Mukherjee A, Pandole S, Marelli UK, Vanka K, Maity P. [1,3]-Claisen Rearrangement via Removable Functional Group Mediated Radical Stabilization. Org Lett 2021; 23:890-895. [PMID: 33443431 DOI: 10.1021/acs.orglett.0c04109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A thermal O-to-C [1,3]-rearrangement of α-hydroxy acid derived enol ethers was achieved under mild conditions. The 2-aminothiophenol protection of carboxylic acids facilitates formation of the [1,3] precursor and its thermal rearrangement via stabilization of a radical intermediate. Experimental and theoretical evidence for dissociative radical pair formation, its captodative stability via aminothiophenol, and a unique solvent effect are presented. The aminothiophenol was deprotected from rearrangement products as well as after derivatization to useful synthons.
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Affiliation(s)
- Md Nirshad Alam
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Soumya Ranjan Dash
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Anirban Mukherjee
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Satish Pandole
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Udaya Kiran Marelli
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Pradip Maity
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
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15
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Chen Y, Liu Y, Li Z, Dong S, Liu X, Feng X. Tandem Insertion–[1,3]‐Rearrangement: Highly Enantioselective Construction of α‐Aminoketones. Angew Chem Int Ed Engl 2020; 59:8052-8056. [DOI: 10.1002/anie.201914645] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 02/28/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Yushuang Chen
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Yun Liu
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Zhaojing Li
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
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16
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Chen Y, Liu Y, Li Z, Dong S, Liu X, Feng X. Tandem Insertion–[1,3]‐Rearrangement: Highly Enantioselective Construction of α‐Aminoketones. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914645] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yushuang Chen
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Yun Liu
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Zhaojing Li
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
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17
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Liu G, Hou S, Xu J. Theoretical calculation studies on the rearrangement mechanisms of arenesulfenanilides to generate o- and p-aminodiphenyl sulfides. Org Biomol Chem 2019; 17:10088-10096. [PMID: 31754666 DOI: 10.1039/c9ob02202c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermal and acid-catalyzed rearrangement mechanisms of arenesulfenanilides were investigated theoretically via density functional theory (DFT) calculations. The results indicate that the o-aminodiphenyl sulfide rearrangement involves a novel S[1,3]-sigmatropic shift followed by tautomerization, while the p-aminodiphenyl sulfide rearrangement proceeds via tandem [3,3]- and [3,3]-sigmatropic shifts followed by tautomerization under thermal conditions. Furthermore, computational studies reveal that water assists the proton shift more efficiently than anilines during tautomerization. Moreover, under the acid-catalyzed conditions, the o-aminodiphenyl sulfide rearrangement involves an S[1,3]-sigmatropic shift similar to that under the thermal conditions, while the p-aminodiphenyl sulfide rearrangement proceeds via cascade S[1,3]- and S[1,3]-sigmatropic shifts followed by water-aided tautomerization. The current theoretical studies provide new insights into the formation mechanism of o/p-aminodiphenyl sulfides in the arenesulfenanilide rearrangement and support the unprecedented suprafacial symmetry-allowed S[1,3]-sigmatropic shift with an inversion of the configuration in the migrating sulfur atom. The mechanism is affected by the reaction medium. Disproportionation of arenesulfenanilides into diaryl disulfides and azobenzenes is a competitive radical pathway during the arenesulfenanilide rearrangements.
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Affiliation(s)
- Guangyan Liu
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China.
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18
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Nakamura I, Terada M. Recent progress on catalytic [1,3]-oxygen rearrangement reactions from nitrogen to carbon atoms. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Yao L, Ishihara K. Enantioselective [1,3] O-to-C rearrangement: dearomatization of alkyl 2-allyloxy/benzyloxy-1/3-naphthoates catalyzed by a chiral π-Cu(ii) complex. Chem Sci 2019; 10:2259-2263. [PMID: 30881650 PMCID: PMC6385897 DOI: 10.1039/c8sc05601c] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 01/10/2019] [Indexed: 11/29/2022] Open
Abstract
An unprecedented catalytic asymmetric [1,3] O-to-C rearrangement of alkyl 2-allyloxy/benzyloxy-1/3-naphthoates was realized under the catalysis of a chiral π-Cu(ii) complex (1-10 mol%). This dearomatization strategy provides facile access to highly functionalized β-naphthalenone derivatives bearing an all-carbon quaternary stereogenic center in high yield with excellent enantioselectivity. The π-cation interaction between the aromatic substituent of the ligand and the Cu(ii) center was proved by X-ray diffraction analysis and shown to be crucial for enantioselective control. Further preliminary mechanistic studies suggest that this intramolecular reaction proceeds through a contact ion pair intermediate.
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Affiliation(s)
- Lu Yao
- Graduate School of Engineering , Nagoya University , B2-3(611) Furo-cho, Chikusa , Nagoya 464-8603 , Japan .
| | - Kazuaki Ishihara
- Graduate School of Engineering , Nagoya University , B2-3(611) Furo-cho, Chikusa , Nagoya 464-8603 , Japan .
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20
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Abe T, Kosaka Y, Asano M, Harasawa N, Mishina A, Nagasue M, Sugimoto Y, Katakawa K, Sueki S, Anada M, Yamada K. Direct C4-Benzylation of Indoles via Tandem Benzyl Claisen/Cope Rearrangements. Org Lett 2019; 21:826-829. [DOI: 10.1021/acs.orglett.8b04120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Takumi Abe
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Yuta Kosaka
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Miku Asano
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Natsuki Harasawa
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Akane Mishina
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Misato Nagasue
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Yuri Sugimoto
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Kazuaki Katakawa
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Shunsuke Sueki
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Masahiro Anada
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Koji Yamada
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
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21
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Ansari AJ, Wani AA, Maurya AK, Verma S, Agnihotri VK, Sharon A, Bharatam PV, Sawant DM. An unprecedented N- to C-sulfonyl migration in the reaction of azomethine amine and allenoates: access to arylsulfonylmethyl substituted pyrazolo[1,5-c]quinazoline and mechanistic studies. Chem Commun (Camb) 2019; 55:14825-14828. [DOI: 10.1039/c9cc06751e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A serendipitous discovery of [1,3]-sulfonyl migration has been made in the two-component reaction of azomethine imine and allenoates.
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Affiliation(s)
- Arshad J. Ansari
- School of Chemical Sciences and Pharmacy
- Central University of Rajasthan
- Ajmer-305817 (Raj)
- India
| | - Aabid Abdullah Wani
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- NIPER
- S.A.S. Nagar (Mohali) – 160062
- India
| | - Antim K. Maurya
- Natural Product Chemistry and Process Development Division
- CSIR-IHBT
- Palampur
- India
| | - Sarika Verma
- Department of Chemistry
- Birla Institute of Technology
- Ranchi
- India
| | - Vijai K. Agnihotri
- Natural Product Chemistry and Process Development Division
- CSIR-IHBT
- Palampur
- India
| | - Ashoke Sharon
- Department of Chemistry
- Birla Institute of Technology
- Ranchi
- India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- NIPER
- S.A.S. Nagar (Mohali) – 160062
- India
| | - Devesh M. Sawant
- School of Chemical Sciences and Pharmacy
- Central University of Rajasthan
- Ajmer-305817 (Raj)
- India
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22
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Xu C, Xu J. Oxygenophilic Lewis Acid Promoted Synthesis of 2-Arylindoles from Anilines and Cyanoepoxides in Alcohol. J Org Chem 2018; 83:14733-14742. [DOI: 10.1021/acs.joc.8b02203] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chuangchuang Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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23
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Nakamura I, Owada M, Jo T, Terada M. Cationic cobalt-catalyzed [1,3]-rearrangement of N-alkoxycarbonyloxyanilines. Beilstein J Org Chem 2018; 14:1972-1979. [PMID: 30202451 PMCID: PMC6122159 DOI: 10.3762/bjoc.14.172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/17/2018] [Indexed: 11/28/2022] Open
Abstract
A cationic cobalt catalyst efficiently promoted the reaction of N-alkoxycarbonyloxyanilines at 30 °C, affording the corresponding ortho-aminophenols in good to high yields. As reported previously, our mechanistic studies including oxygen-18 labelling experiments indicate that the rearrangement of the alkoxycarbonyloxy group proceeds in [1,3]-manner. In this article, we discuss the overall picture of the cobalt-catalysed [1,3]-rearrangement reaction including details of the reaction conditions and substrate scope.
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Affiliation(s)
- Itaru Nakamura
- Research and Analytical Center for Giant Molecule, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578 Japan
| | - Mao Owada
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578 Japan
| | - Takeru Jo
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578 Japan
| | - Masahiro Terada
- Research and Analytical Center for Giant Molecule, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578 Japan.,Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578 Japan
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24
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Gade AB, Bagle PN, Shinde PS, Bhardwaj V, Banerjee S, Chande A, Patil NT. Catalytic Enantioselective 1,3-Alkyl Shift in Alkyl Aryl Ethers: Efficient Synthesis of Optically Active 3,3′-Diaryloxindoles. Angew Chem Int Ed Engl 2018; 57:5735-5739. [DOI: 10.1002/anie.201801650] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/12/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Amol B. Gade
- Division of Organic Chemistry; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110 025 India
| | - Pradip N. Bagle
- Division of Organic Chemistry; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110 025 India
| | - Popat S. Shinde
- Division of Organic Chemistry; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110 025 India
| | - Vipin Bhardwaj
- Department of Biological Sciences; Indian Institute of Science Education and Research Bhopal, Bhauri; Bhopal 462 066 India
| | - Subhrashis Banerjee
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr Homi Bhabha Road Pune - 411 008 India
| | - Ajit Chande
- Department of Biological Sciences; Indian Institute of Science Education and Research Bhopal, Bhauri; Bhopal 462 066 India
| | - Nitin T. Patil
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal, Bhauri; Bhopal 462 066 India
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25
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Gade AB, Bagle PN, Shinde PS, Bhardwaj V, Banerjee S, Chande A, Patil NT. Catalytic Enantioselective 1,3-Alkyl Shift in Alkyl Aryl Ethers: Efficient Synthesis of Optically Active 3,3′-Diaryloxindoles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801650] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Amol B. Gade
- Division of Organic Chemistry; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110 025 India
| | - Pradip N. Bagle
- Division of Organic Chemistry; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110 025 India
| | - Popat S. Shinde
- Division of Organic Chemistry; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110 025 India
| | - Vipin Bhardwaj
- Department of Biological Sciences; Indian Institute of Science Education and Research Bhopal, Bhauri; Bhopal 462 066 India
| | - Subhrashis Banerjee
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr Homi Bhabha Road Pune - 411 008 India
| | - Ajit Chande
- Department of Biological Sciences; Indian Institute of Science Education and Research Bhopal, Bhauri; Bhopal 462 066 India
| | - Nitin T. Patil
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal, Bhauri; Bhopal 462 066 India
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26
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Zhang J, Liao Z, Chen L, Jiang H, Zhu S. Catalytic [1,3] O-to-C Rearrangement: Rapid Access to Bridged Bicyclic Systems. Chemistry 2018; 24:6927-6931. [PMID: 29504644 DOI: 10.1002/chem.201801062] [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: 03/01/2018] [Indexed: 12/19/2022]
Abstract
A catalytic [1,3] O-to-C rearrangement from enyne-ethers was developed for the rapid synthesis of diverse bridged bicyclic systems. In this reaction, a vinyl oxonium intermediate, generated in situ from enyne-ether, was the precursor for the [1,3] O-to-C rearrangement. This versatile protocol represents the first example of catalytic [1,3] O-to-C rearrangement based on ring-expansion strategy, enabling efficient access to bridged bicyclic scaffolds.
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Affiliation(s)
- Jiantao Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Zhehui Liao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Lianfen Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Shifa Zhu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
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27
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A new synthesis of highly functionalized cyclohexenes via a vinylogous Ferrier-Petasis cyclization reaction. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.10.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Fu L, Damsen H, Niggemann M. A Vinyl-Cation-Induced 1,3-Aryl Shift. Chemistry 2017; 23:12158-12161. [DOI: 10.1002/chem.201701255] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Liang Fu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Helena Damsen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Meike Niggemann
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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29
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Nakamura I, Owada M, Jo T, Terada M. Concerted [1,3]-Rearrangement in Cationic Cobalt-Catalyzed Reaction of O-(Alkoxycarbonyl)-N-arylhydroxylamines. Org Lett 2017; 19:2194-2196. [DOI: 10.1021/acs.orglett.7b00700] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Itaru Nakamura
- Research and Analytical Center for Giant Molecules and ‡Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Mao Owada
- Research and Analytical Center for Giant Molecules and ‡Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Takeru Jo
- Research and Analytical Center for Giant Molecules and ‡Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Masahiro Terada
- Research and Analytical Center for Giant Molecules and ‡Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Miyagi, Japan
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30
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Cheng B, Xu J. Mechanistic insight into the thermal 1,3-chlorine migrations of N-chloroacetanilides under neutral conditions. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2016.1268137] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Baoxiang Cheng
- State Key Laboratory of Chemical Engineering Resource, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Engineering Resource, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
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31
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Krenske EH, Burns JM, McGeary RP. Claisen rearrangements of benzyl vinyl ethers: theoretical investigation of mechanism, substituent effects, and regioselectivity. Org Biomol Chem 2017; 15:7887-7893. [DOI: 10.1039/c7ob01666b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Theoretical calculations are reported which examine the mechanisms of Claisen rearrangements of benzyl vinyl ethers and the ways in which substituents influence reactivity and regioselectivity.
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Affiliation(s)
- Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
| | - Jed M. Burns
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
| | - Ross P. McGeary
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
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32
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Mo S, Xu C, Xu J. Expeditious and Convenient Synthesis of Polycyclic Difluoroboron Complexes of 2-Oxoindoline-3-carboxamides by Tandem Reaction. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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33
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Mechanistic insight into thermal 1,3- and 1,5-sulfonyl migrations of N-arenesulfonylphenothiazines and N-arenesulfonylphenoxazines. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1661-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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Kona CN, Patil MN, Ramana CV. Gold(i) catalyzed [1,3] O → C rearrangement of benzylvinyl ethers. Org Chem Front 2016. [DOI: 10.1039/c5qo00397k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A simple procedure for the preparation of 3-(hetero)arylpropionaldehydes has been developed employing a gold-catalyzed [1,3]-rearrangement of vinyl ethers.
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Affiliation(s)
| | - Mahesh N. Patil
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune – 411 008
- India
| | - Chepuri V. Ramana
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune – 411 008
- India
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35
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Devarajan K, Devaraj S, Balasubramanian KK, Bhagavathy S. An Unexpected Thermal [1,3]-[1,3]-para Rearrangement of Chromone-3-ylmethyl Aryl Ethers: Mechanism and Application of the Intercepted [1,3]-Rearranged Intermediates to the Synthesis of cis-Homopterocarpans. CHEM LETT 2015. [DOI: 10.1246/cl.141162] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Reid JP, McAdam CA, Johnston AJS, Grayson MN, Goodman JM, Cook MJ. Base-mediated cascade rearrangements of aryl-substituted diallyl ethers. J Org Chem 2015; 80:1472-98. [PMID: 25514457 DOI: 10.1021/jo502403n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Two base-mediated cascade rearrangement reactions of diallyl ethers were developed leading to selective [2,3]-Wittig-oxy-Cope and isomerization-Claisen rearrangements. Both diaryl and arylsilyl-substituted 1,3-substituted propenyl substrates were examined, and each exhibits unique reactivity and different reaction pathways. Detailed mechanistic and computational analysis was conducted, which demonstrated that the role of the base and solvent was key to the reactivity and selectivity observed. Crossover experiments also suggest that these reactions proceed with a certain degree of dissociation, and the mechanistic pathway is highly complex with multiple competing routes.
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Affiliation(s)
- Jolene P Reid
- School of Chemistry and Chemical Engineering, Queen's University Belfast , Belfast BT9 5AG, Northern Ireland, United Kingdom
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37
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Zolfigol MA, Baghery S, Moosavi-Zare AR, Vahdat SM. Synthesis of 1,2,4,5-tetrasubstituted imidazoles using 2,6-dimethylpyridinium trinitromethanide {[2,6-DMPyH]C(NO2)3} as a novel nanostructured molten salt and green catalyst. RSC Adv 2015. [DOI: 10.1039/c5ra03241e] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
2,6-Dimethylpyridinium trinitromethanide {[2,6-DMPyH]C(NO2)3} as a novel nanostructured molten salt catalyst (MS) was synthesized, characterized and used for the synthesis of 1,2,4,5-tetrasubstituted imidazoles under solvent-free conditions.
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Affiliation(s)
| | - Saeed Baghery
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan 6517838683
- Iran
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38
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Baimuratov MR, Leonova MV, Klimochkin YN. Synthesis and thermal transformations of allyl aryl ethers of adamantane series. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363214040057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Wang W, Zhou R, Jiang ZJ, Wang K, Fu HY, Zheng XL, Chen H, Li RX. An Efficient Palladium-Catalyzed Synthesis of Cinnamyl Ethers from Aromatic Halides, Phenols, and Allylic Chloride. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300757] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Kona CN, Ramana CV. Gold(i)-catalysed [1,3] O→C rearrangement of allenyl ethers. Chem Commun (Camb) 2014; 50:2152-4. [DOI: 10.1039/c3cc49629e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Gold standard: a simple and rapid access to the α-substituted acryl aldehydes has been provided by developing a gold-catalysed [1,3] rearrangement of the allenyl ethers importantly with a record turnover frequency = 4600 h−1 (at 0.05 mol% of the catalyst concentration) in homogeneous gold(i) catalysis.
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Affiliation(s)
| | - Chepuri V. Ramana
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune-411008, India
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41
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Hou S, Li X, Xu J. N[1,3]-sigmatropic shift in the benzidine rearrangement: experimental and theoretical investigation. Org Biomol Chem 2014; 12:4952-63. [PMID: 24879467 DOI: 10.1039/c4ob00080c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The N[1,3]-sigmatropic shift with an inversion of the configuration in the migrating nitrogen atom exists in the formation of semidines and diphenyline.
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Affiliation(s)
- Shili Hou
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029, People's Republic of China
| | - Xinyao Li
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029, People's Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029, People's Republic of China
| |
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