1
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Sun L, Cui J, Nie S, Xie L, Wang Y, Wu L. NIS‐Mediated Intramolecular sp3 C–H Oxidation of 2‐Alkyl‐Substituted Benzamides. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lei Sun
- Liaocheng University College of Chemistry and Chemical engineering CHINA
| | - Jichun Cui
- Liaocheng University College of Chemistry and Chemical engineering CHINA
| | - Shaozhen Nie
- Liaocheng University School of pharmacy, College of Chemistry and Chemical engineering CHINA
| | - Lei Xie
- Liaocheng University School of pharmacy, College of Chemistry and Chemical engineering CHINA
| | - Yanlan Wang
- Liaocheng University College of Chemistry and Chemical engineering CHINA
| | - Lingang Wu
- Liaocheng University College of Chemistry and Chemical engineering No. 1, Hunan Road 252000 Liaocheng CHINA
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2
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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3
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Li S, Liu L, Wang R, Yang Y, Li J, Wei J. Palladium-Catalyzed Oxidative Annulation of Sulfoximines and Arynes by C–H Functionalization as an Approach to Dibenzothiazines. Org Lett 2020; 22:7470-7474. [DOI: 10.1021/acs.orglett.0c02615] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shan Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Liansheng Liu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Rong Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Yihui Yang
- Department of Applied Chemistry, Xi’an University of Technology, Xi’an 710048, China
| | - Jing Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Junfa Wei
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
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4
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Liu H, Deng X, Huang X, Ji N, He W. Study on the ArI-catalyzed intramolecular oxy-cyclization of 2-alkenylbenzamides to benzoiminolactones. Org Biomol Chem 2020; 18:3654-3658. [PMID: 32348390 DOI: 10.1039/d0ob00612b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new intramolecular oxy-cyclization of 2-alkenylbenzamides catalyzed by ArI has been developed. This protocol is highlighted by its metal-free catalytic system and extremely short reaction time, providing efficient and straightforward access to various benzoiminolactones in good to excellent yields. Interestingly, a regioselective transformation occurred when using two different reaction systems. Mechanistic studies suggested that mCPBA acts as both oxidant and ligand at the IIII center, and the Lewis acid BF3 accelerated ligand exchange and reductive elimination in the catalytic process.
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Affiliation(s)
- Huixia Liu
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, P. R. China.
| | - Xiaojun Deng
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, P. R. China.
| | - Xie Huang
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, P. R. China.
| | - Nan Ji
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, P. R. China.
| | - Wei He
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, P. R. China.
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5
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Ghorai S, Lin Y, Xia Y, Wink DJ, Lee D. Silver-Catalyzed Selective Multicomponent Coupling Reactions of Arynes with Nitriles and Isonitriles. Org Lett 2019; 22:642-647. [PMID: 31891273 DOI: 10.1021/acs.orglett.9b04416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sourav Ghorai
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Yongjia Lin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P. R. China
| | - Donald J. Wink
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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6
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Wu L, Hao Y, Liu Y, Wang Q. Visible-light-induced intramolecular sp 3 C-H oxidation of 2-alkyl-substituted benzamides for the synthesis of functionalized iminoisobenzofurans. Chem Commun (Camb) 2019; 55:13908-13911. [PMID: 31681932 DOI: 10.1039/c9cc07791j] [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
We have developed a protocol for the synthesis of functionalized iminoisobenzofurans by means of visible-light-induced intramolecular cyclization reactions of 2-alkyl-substituted benzamides. This one step-economical protocol, which involves intramolecular sp3 C-O bond formation, features mild reaction conditions, exclusive chemoselectivity, and high yields.
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Affiliation(s)
- Lingang Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
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7
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Ghorai S, Lee D. Synthesis of Imides, Imidates, Amidines, and Amides by Intercepting the Aryne-Isocyanide Adduct with Weak Nucleophiles. Org Lett 2019; 21:7390-7393. [PMID: 31482701 DOI: 10.1021/acs.orglett.9b02711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
New aryne-based multicomponent coupling reactions for the formation of functionalized aromatic compounds have been developed. Arynes generated from triynes or tetraynes through the hexadehydro Diels-Alder reaction readily react with isocyanide to generate nitrilium intermediate. Intercepting this nitrilium species with various weak nucleophile including carboxylic acids, alcohols, sulfonamides, or water generated the corresponding imides, imidates, amidines, or amides. The high regioselectivity of these transformations was mainly controlled by the substituents of the arynes.
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Affiliation(s)
- Sourav Ghorai
- Department of Chemistry , University of Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Daesung Lee
- Department of Chemistry , University of Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
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8
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Serafini M, Pirali T. Arynes and isocyanides: Two close-knit partners in multicomponent reactions. DRUG DISCOVERY TODAY. TECHNOLOGIES 2018; 29:35-41. [PMID: 30471672 DOI: 10.1016/j.ddtec.2018.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/13/2018] [Accepted: 06/21/2018] [Indexed: 06/09/2023]
Abstract
Despite benzyne has been known since 1940, this fascinating species has received much attention only over the last decades. The renaissance of interest in aryne chemistry is ascribable to the seminal discovery that arynes can be generated in situ from stable and commercially available precursors under mild and neutral conditions. Thanks to their high reactivity, arynes are key intermediates in countless chemical transformations ranging from cycloadditions to insertions and, among all these approaches, multicomponent reactions (MCRs) are currently standing out in this field. In particular, this short article is focused on MCRs involving the concomitant use of benzyne and isocyanides. Furthermore, the first overview on aryne MCRs triggered by α-isocyanoacetamides is presented.
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Affiliation(s)
- Marta Serafini
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
| | - Tracey Pirali
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy.
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9
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Chen Z, Liang P, Zheng J, Zhou Z, Wen X, Liu T, Ye M. Cyanide-Free Ce(III)-Catalyzed Highly Efficient Synthesis of α-Iminonitriles from 2-Aminopyridines and Nitroalkenes via Intermolecular Dehydration Reaction. ACS OMEGA 2018; 3:12520-12529. [PMID: 31457985 PMCID: PMC6644690 DOI: 10.1021/acsomega.8b02214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 09/24/2018] [Indexed: 05/11/2023]
Abstract
A direct and rapid method for the synthesis of α-iminonitriles achieved good to excellent yields. A novel intermolecular dehydration reaction between 2-aminopyridines and nitroalkenes is reported via a rare-earth-metal catalyst. The merits of this transformation include cyanide-free protocol, short reaction time, simple operation, water as the only byproduct, commercially available reagents, good functional group tolerance, etc. Moreover, nitroalkenes are demonstrated as a new "CN" source in this transformation.
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Affiliation(s)
- Zhengwang Chen
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, P. R. China
- E-mail: . Phone/Fax: +86 797-8793670 (Z.C.)
| | - Pei Liang
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Jing Zheng
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Zhonggao Zhou
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Xiaowei Wen
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Tanggao Liu
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Min Ye
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
- E-mail: (M.Y.)
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10
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Liu ZC, Zhao QQ, Chen J, Tang Q, Chen JR, Xiao WJ. Visible Light Photocatalytic Radical Addition/Cyclization Reaction of o
-Vinyl-N
-Alkoxybenzamides for Synthesis of CF3
-Containing Iminoisobenzofurans. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800037] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zhi-Cheng Liu
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology, Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 People's of China
| | - Quan-Qing Zhao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology, Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 People's of China
| | - Jun Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology, Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 People's of China
| | - Qian Tang
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology, Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 People's of China
| | - Jia-Rong Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology, Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 People's of China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology, Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 People's of China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; 345 Lingling Road Shanghai 200032 People's of China
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11
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Roy T, Bhojgude SS, Kaicharla T, Thangaraj M, Garai B, Biju AT. Employing carboxylic acids in aryne multicomponent coupling triggered by aziridines/azetidines. Org Chem Front 2016. [DOI: 10.1039/c5qo00328h] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The transition-metal-free aryne multicomponent coupling (MCC) involving carboxylic acids initiated by aziridines/azetidines leading to the synthesis of N-aryl β/γ-amino alcohol derivatives has been developed.
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Affiliation(s)
- Tony Roy
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | | | - Trinadh Kaicharla
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | | | - Bikash Garai
- Physical and Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | - Akkattu T. Biju
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
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12
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Synthesis of Phenolic Compounds by Trapping Arynes with a Hydroxy Surrogate. Molecules 2015; 20:15862-80. [PMID: 26334266 PMCID: PMC6331853 DOI: 10.3390/molecules200915862] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 08/23/2015] [Accepted: 08/24/2015] [Indexed: 11/23/2022] Open
Abstract
Trapping of arynes with various nucleophiles provides a range of heteroatom-functionalized arene derivatives, but the corresponding reaction with water does not provide phenol derivatives. Silver trifluroacetate (AgO2CCF3) can nicely solve this problem. It was found that in typical organic solvent, AgO2CCF3 readily reacts with arynes to generate trifluoroacetoxy organosilver arene intermediate, which, upon treating with silica gel, provides phenolic products. This protocol can be extended to the synthesis of α-halofunctionalized phenol derivatives by simply adding NBS (N-bromosuccinimides) or NIS (N-iodosuccinimides) to the reaction along with silver trifluroacetate, which provided α-bromo or α-iodophenol derivatives in good yield. However, the similar reactions with NCS (N-chlorosuccinimides) afforded only the protonated product instead of the expected α-chlorophenols derivatives. Interestingly, substrates containing silyl substituents on 1,3-diynes resulted in α-halotrifluoroacetates rather than their hydrolyzed product. Additionally, trapping the same arynes with other oxygen-based nucleophiles containing silver counter cation, along with NXS (N-halosuccinimides), generated α-halooxyfunctionalized products.
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13
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Synthesis of Oxygen Heterocycles via Aromatic C-O Bond Formation Using Arynes. Molecules 2015; 20:12558-75. [PMID: 26184140 PMCID: PMC6332388 DOI: 10.3390/molecules200712558] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 07/07/2015] [Accepted: 07/08/2015] [Indexed: 11/24/2022] Open
Abstract
Most of the synthetic approaches to the benzo-fused heterocycles containing an oxygen atom have involved the use of phenol derivatives as a starting material. This review highlights the new synthetic approaches involving the aromatic C-O bond-forming process using arynes. The insertion of arynes into the C=O bond gives the unstable intermediates, [2 + 2] cycloaddition-type adducts, which can be easily converted into a variety of oxygen atom-containing heterocycles in a single operation. In this review, the syntheses of oxygen heterocycles, such as coumarin, chromene, xanthene, dihydrobenzofuran and benzofuran derivatives, via the insertion of arynes into the C=O bond of aldehydes or formamides are summarized.
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14
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Garve LKB, Werz DB. Pd-catalyzed three-component coupling of terminal alkynes, arynes, and vinyl cyclopropane dicarboxylate. Org Lett 2015; 17:596-9. [PMID: 25625685 DOI: 10.1021/ol503609d] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A palladium-catalyzed three-component coupling involving in situ generated arynes, terminal alkynes, and vinyl cyclopropane dicarboxylate has been developed. The process demonstrates the first example of aryne chemistry combined with the ring opening of vinyl cyclopropanes. This efficient method using readily available starting materials generates two new carbon-carbon bonds in one pot.
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Affiliation(s)
- Lennart K B Garve
- Technische Universität Braunschweig, Institut für Organische Chemie , Hagenring 30, 38106 Braunschweig, Germany
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15
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Li J, Okuda Y, Zhao J, Mori S, Nishihara Y. Skeletal Rearrangement of Cyano-Substituted Iminoisobenzofurans into Alkyl 2-Cyanobenzoates Catalyzed by B(C6F5)3. Org Lett 2014; 16:5220-3. [DOI: 10.1021/ol5026519] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jing Li
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Natural
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Yasuhiro Okuda
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Natural
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Jiaji Zhao
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Natural
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Seiji Mori
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan
| | - Yasushi Nishihara
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Natural
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
- ACT-C, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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16
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Bhunia A, Roy T, Gonnade RG, Biju AT. Rapid Access to Benzoxaphospholes and Their Spiro Analogues by a Three-Component Coupling Involving Arynes, Phosphines, and Activated Ketones. Org Lett 2014; 16:5132-5. [DOI: 10.1021/ol502490t] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Anup Bhunia
- Organic Chemistry Division, ‡Centre for Materials Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune - 411008, India
| | - Tony Roy
- Organic Chemistry Division, ‡Centre for Materials Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune - 411008, India
| | - Rajesh G. Gonnade
- Organic Chemistry Division, ‡Centre for Materials Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune - 411008, India
| | - Akkattu T. Biju
- Organic Chemistry Division, ‡Centre for Materials Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune - 411008, India
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