1
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Sui JL, Zhong LJ, Xiong BQ, Tang KW, Liu Y. Regioselective synthesis of N-containing polycyclic compounds via radical annulation cyclization of 1,7-dienes with aldehydes. Chem Commun (Camb) 2024; 60:4834-4837. [PMID: 38619398 DOI: 10.1039/d4cc00964a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
A convenient method for oxidant-promoted radical cascade acylation or decarbonylative alkylation of 1,7-dienes with aldehydes has been established. This method allows for the rapid construction of N-containing polycyclic skeletons in a highly regio- and stereoselective manner. This transformation provides a simple and efficient method for the preparation of a range of tetrahydro-6H-indeno[2,1-c]quinolinone derivatives by sequential formation of three new carbon-carbon bonds. Additionally, this radical cascade cyclization can selectively convert aldehydes into aroyl/primary aliphatic acyl radicals and secondary or tertiary alkyl radicals.
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Affiliation(s)
- Jia-Li Sui
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Long-Jin Zhong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
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2
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Patel SS, Gupta S, Tripathi CB. Organocatalyzed Hydroacylation of Enones by Photosensitization of Acyl Silanes. Chem Asian J 2024:e202400240. [PMID: 38600748 DOI: 10.1002/asia.202400240] [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: 03/04/2024] [Revised: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/12/2024]
Abstract
A mild protocol for hydroacylation of enones through photosensitization of acyl silanes with thioxanthone under blue light (455 nm) irradiation is reported. A Brønsted acid is used as a cocatalyst in the reaction. The versatility of the method is demonstrated through inter- and intramolecular hydroacylation reaction. The hydroacylation product is applied for synthesizing an anti-HCV agent. Mechanistic insights are also provided through control experiments.
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Affiliation(s)
- Shiv Shankar Patel
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Samiksha Gupta
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Chandra Bhushan Tripathi
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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3
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Roy VJ, Dagar N, Choudhury S, Raha Roy S. Unified Approach to Diverse Heterocyclic Synthesis: Organo-Photocatalyzed Carboacylation of Alkenes and Alkynes from Feedstock Aldehydes and Alcohols. J Org Chem 2023; 88:15374-15388. [PMID: 37871233 DOI: 10.1021/acs.joc.3c01884] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
We report an organo-photocatalyzed carboacylation reaction that offers a springboard to create chemical complexity in a diversity-driven approach. The modular one-pot method uses feedstock aldehydes and alcohols as acyl surrogates and commercially available Eosin Y as the photoredox catalyst, making it simple and affordable to introduce structural diversity. Several biologically relevant skeletons have been easily synthesized under mild conditions in the presence of visible light irradiation by fostering a radical acylation/cyclization cascade. The proposed reaction mechanism was further illuminated by a number of spectroscopic studies. Furthermore, we applied this protocol for the late-stage functionalization of pharmaceuticals and blockbuster drugs.
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Affiliation(s)
- Vishal Jyoti Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Neha Dagar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Swagata Choudhury
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sudipta Raha Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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4
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He H, Wan Q, Hou ZW, Zhou Q, Wang L. Organoelectrophotocatalytic Generation of Acyl Radicals from Formamides and Aldehydes: Access to Acylated 3-CF 3-2-Oxindoles. Org Lett 2023; 25:7014-7019. [PMID: 37721400 DOI: 10.1021/acs.orglett.3c02607] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Organoelectrophotocatalytic generation of acyl radicals from formamides and aldehydes to synthesize acylated 3-CF3-2-oxindoles has been developed. This protocol features a monocatalytic system using 9,10-phenanthrenequinone (PQ) both as a catalyst and as a hydrogen atom transfer (HAT) reagent, which avoids the use of an external HAT reagent, metal reagent, and oxidant. A variety of acylated 3-CF3-2-oxindoles have been obtained in satisfactory yields from CF3-substituted N-arylacrylamides via a tandem radical cyclization.
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Affiliation(s)
- Hong He
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Qinhui Wan
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Zhong-Wei Hou
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Quan Zhou
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Lei Wang
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P. R. China
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5
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Recent Advances in Molecule Synthesis Involving C-C Bond Cleavage of Ketoxime Esters. Molecules 2023; 28:molecules28062667. [PMID: 36985637 PMCID: PMC10058904 DOI: 10.3390/molecules28062667] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
The synthetic strategies of oxime derivatives participating in radical-type reactions have been rapidly developed in the last few decades. Among them, the N–O bond cleavage of oxime esters leading to formation of nitrogen-centered radicals triggers adjacent C–C bond cleavage to produce carbon-centered free radicals, which has been virtually used in organic synthesis in recent years. Herein, we summarized the radical reactions involving oxime N–O bond and C–C bond cleavage through this special reaction form, including those from acyl oxime ester derivatives and cyclic ketoxime ester derivatives. These contents were systematically classified according to different reaction types. In this review, the free radical reactions involving acyl oxime esters and cyclic ketoxime esters after 2021 were included, with emphasis on the substrate scope and reaction mechanism.
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6
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Azpilcueta-Nicolas CR, Meng D, Edelmann S, Lumb JP. Dearomatization of Biaryls through Polarity Mismatched Radical Spirocyclization. Angew Chem Int Ed Engl 2023; 62:e202215422. [PMID: 36454656 DOI: 10.1002/anie.202215422] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022]
Abstract
Dearomatization reactions involving radical cyclizations can facilitate the synthesis of complex polycyclic systems that find applications in medicinal chemistry and natural product synthesis. Here we employ redox-neutral photocatalysis to affect a radical spirocyclization that transforms biaryls into spirocyclic cyclohexadienones under mild reaction conditions. In a departure from previously reported methods, our work demonstrates the polarity mismatched addition of a nucleophilic radical to an electron rich arene, and allows the regioselective synthesis of 2,4- or 2,5-cyclohexadienones with broad functional group tolerance. By transforming biaryls into spirocycles, our methodology accesses underexplored three-dimensional chemical space, and provides an efficient means of creating quaternary spirocenters that we apply to the first synthesis of the cytotoxic plant metabolite denobilone A.
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Affiliation(s)
| | - Derek Meng
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Simon Edelmann
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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7
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Zhi S, Yao H, Zhang W. Difunctionalization of Dienes, Enynes and Related Compounds via Sequential Radical Addition and Cyclization Reactions. Molecules 2023; 28:molecules28031145. [PMID: 36770814 PMCID: PMC9919800 DOI: 10.3390/molecules28031145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
Radical reactions are powerful in creating carbon-carbon and carbon-heteroatom bonds. Designing one-pot radical reactions with cascade transformations to assemble the cyclic skeletons with two new functional groups is both synthetically and operationally efficient. Summarized in this paper is the recent development of reactions involving radical addition and cyclization of dienes, diynes, enynes, as well as arene-bridged and arene-terminated compounds for the preparation of difunctionalization cyclic compounds. Reactions carried out with radical initiators, transition metal-catalysis, photoredox, and electrochemical conditions are included.
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Affiliation(s)
- Sanjun Zhi
- Jiangsu Key Laboratory for the Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huai’an 223300, China
| | - Hongjun Yao
- College of Biological Science and Technology, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
| | - Wei Zhang
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125, USA
- Correspondence: ; Tel.: +1-617-287-6147
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8
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Wei G, Zhang J, Wang H, Chen Z, Wu XF. Radical selenylative cyclization of trifluoromethyl propargyl imines for the synthesis of trifluoromethyl- and seleno-azaspiro[4,5]-tetraenones and quinolines. Org Biomol Chem 2023; 21:284-288. [PMID: 36484764 DOI: 10.1039/d2ob02033e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
A radical selenylative cyclization of trifluoromethyl propargyl imines with diselenides for the regiodivergent construction of diversely functionalized azaspiro[4,5]-tetraenones and quinolines has been developed, which enables dual incorporation of CF3 and Se groups into heterocycles in a one-pot reaction. When using Oxone as a green oxidant, the reaction proceeds through oxidative dearomative ipso-annulation or intramolecular ortho-annulation exhibiting good regioselectivity. The synthetic utility of this method is demonstrated by a scale-up reaction and further modification of the obtained products.
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Affiliation(s)
- Guangming Wei
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Jiajun Zhang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Haoyuan Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Zhengkai Chen
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China. .,Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straβe 29a, 18059 Rostock, Germany.
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9
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Bao L, Wang ZX, Chen XY. Metal-Free Generation of Acyl Radical via Photoinduced Single-Electron Transfer from Lewis Base to Acyl Chloride. Org Lett 2022; 24:8223-8227. [DOI: 10.1021/acs.orglett.2c03339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Lei Bao
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Raji Reddy C, Subbarao M, Kolgave DH, Ajaykumar U, Vinaya PP. Access to Diverse Seleno-spirocyclohexadienones via Ag(II)-Catalyzed Selenylative ipso-Annulation with Se and Boronic Acids. ACS OMEGA 2022; 7:38045-38052. [PMID: 36312410 PMCID: PMC9608386 DOI: 10.1021/acsomega.2c05394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/30/2022] [Indexed: 05/29/2023]
Abstract
An efficient and straightforward synthesis of diversified seleno-azaspiro-2,5-cyclohexadienones from N-(4-methoxy aryl)propiolamides using elemental selenium and boronic acids has been demonstrated. The reaction proceeds through silver-catalyzed oxidative dearomatization in the presence of potassium persulfate (K2S2O8) as the oxidant. Further, this approach was extended to N-(4-methoxy aryl)propiolates and biaryl ynones to access the corresponding selenylated oxospiro-2,5-cyclohexadienones and spiro[5,5]trienones, respectively. The present three-component method offers the diverse substitutions on selenium involving two C-Se and one C-C bond formations.
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11
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Chen Z, Tang W, Yang S, Yang L. Electrochemical synthesis of 3-halogenated spiro [4,5]trienones based on dearomative spirocyclization strategy. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Raji Reddy C, Kolgave DH, Ajaykumar U, Ramesh R. Copper(II)-catalyzed oxidative ipso-annulation of N-arylpropiolamides and biaryl ynones with 1,3-diketones: construction of diketoalkyl spiro-trienones. Org Biomol Chem 2022; 20:6879-6889. [PMID: 35972321 DOI: 10.1039/d2ob01282k] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented copper-catalyzed ipso-annulation reaction of N-(p-methoxyaryl)propiolamides with 1,3-diketones has been developed, which enables the assembly of diketoalkylated spiro[4.5]trienones involving oxidative dearomatization in the presence of ammonium persulfate [(NH4)2S2O8] as the oxidant. This protocol was extended to biaryl ynones, efficiently affording the diketoalkylated spiro[5.5]trienones in good yields. The significance of the diketoalkyl functionality has been illustrated by further transformation into 3-pyrazoyl spiro-trienone, a structurally unique motif.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Dattahari H Kolgave
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Uprety Ajaykumar
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Remya Ramesh
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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13
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Zhou C, Shatskiy A, Temerdashev AZ, Kärkäs MD, Dinér P. Highly congested spiro-compounds via photoredox-mediated dearomative annulation cascade. Commun Chem 2022; 5:92. [PMID: 36697909 PMCID: PMC9814605 DOI: 10.1038/s42004-022-00706-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/15/2022] [Indexed: 01/28/2023] Open
Abstract
Photo-mediated radical dearomatization involving 5-exo-trig cyclizations has proven to be an important route to accessing spirocyclic compounds, whereas 6-exo-trig spirocyclization has been much less explored. In this work, a dearomative annulation cascade is realized through photoredox-mediated C-O bond activation of aromatic carboxylic acids to produce two kinds of spirocyclic frameworks. Mechanistically, the acyl radical is formed through oxidation of triphenylphosphine and subsequent C-O bond cleavage, followed by a 6-exo-trig cyclization/SET/protonation sequence to generate the spiro-chromanone products in an intramolecular manner. Furthermore, the protocol was extended to more challenging intermolecular tandem sequences consisting of C-O bond cleavage, radical addition to an alkene substrate, and 5-exo-trig cyclization to yield complex spirocyclic lactams.
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Affiliation(s)
- Chao Zhou
- Department of Chemistry, Division of Organic Chemistry, KTH Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden
| | - Andrey Shatskiy
- Department of Chemistry, Division of Organic Chemistry, KTH Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden
| | - Azamat Z Temerdashev
- Department of Analytical Chemistry, Kuban State University, Stavropolskaya St. 149, 350040, Krasnodar, Russia
| | - Markus D Kärkäs
- Department of Chemistry, Division of Organic Chemistry, KTH Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden
| | - Peter Dinér
- Department of Chemistry, Division of Organic Chemistry, KTH Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden.
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14
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Yang M, Hua J, Wang H, Ma T, Liu C, He W, Zhu N, Hu Y, Fang Z, Guo K. Photomediated Spirocyclization of N-Benzyl Propiolamide with N-Iodosuccinimide for Access to Azaspiro[4.5]deca-6,9-diene-3,8-dione. J Org Chem 2022; 87:8445-8457. [PMID: 35678323 DOI: 10.1021/acs.joc.2c00579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A metal- and oxidant-free route for affording azaspiro[4.5]deca-6,9-diene-3,8-dione via photomediated iodinated spirocyclization of N-(4-methoxybenzyl) propiolamide has been developed. The reaction underwent a radical addition/ipso-cyclization/dearomatization process at room temperature and successfully constructed C-C and C-I bonds. This green and convenient approach could be generally expanded to produce a range of iodinated spirocyclization products in moderate to good yields.
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Affiliation(s)
- Man Yang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jiawei Hua
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Hao Wang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Tao Ma
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yujing Hu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kai Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
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15
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Chen P, Fan JH, Yu WQ, Xiong BQ, Liu Y, Tang KW, Xie J. Alkylation/Ipso-cyclization of Active Alkynes Leading to 3-Alkylated Aza- and Oxa-spiro[4,5]-trienones. J Org Chem 2022; 87:5643-5659. [PMID: 35416658 DOI: 10.1021/acs.joc.1c03118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A method for the preparation of 3-alkylated spiro[4.5]trienones via alkylation/ipso-cyclization of activated alkynes with 4-alkyl-DHPs under transition-metal-free conditions is proposed. This alkylation successively undergoes the generation of alkyl radicals, addition of alkyl radicals to the alkynes, and intramolecular ipso-cyclization. The mechanism studies suggest that the alkylation/ipso-cyclization involves a radical process. This ipso-cyclization procedure shows a series of advantages, such as accessibility, mild conditions, high efficiency, greater safety, and an environmentally friendly method.
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Affiliation(s)
- Pu Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Jian-Hong Fan
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Wen-Qin Yu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Jun Xie
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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16
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Zhou T, Liu R, Wang X, Rui M, Zhao X, Lu K. Visible‐light Induced Ipso‐Difluoromethylation of N‐arylpropiolamides to Synthesize 3‐difluoromethyl Spiro[4.5]trienones. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200154] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ting Zhou
- Tianjin University of Science and Technology Chemistry Tianjin CHINA
| | - Ruiyue Liu
- Tianjin University of Science and Technology Chemistry Tianjin CHINA
| | - Xiuxiu Wang
- Tianjin University of Science and Technology Chemistry Tianjin CHINA
| | - Mingyang Rui
- Tianjin University of Science and Technology Chemistry Tianjin CHINA
| | - Xia Zhao
- Tianjin University of Science and Technology Chemistry Tianjin CHINA
| | - Kui Lu
- Tianjin University of Science & Technology Department of Pharmaceutical Engineering No.29, 13th AvenueTianjin Economic and Technological Development Area 300457 Tianjin CHINA
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17
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Cheng YZ, Feng Z, Zhang X, You SL. Visible-light induced dearomatization reactions. Chem Soc Rev 2022; 51:2145-2170. [PMID: 35212320 DOI: 10.1039/c9cs00311h] [Citation(s) in RCA: 81] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dearomatization reactions provide rapid access to structurally complex three-dimensional molecules from simple aromatic compounds. Plenty of reports have demonstrated their utilities in the synthesis of natural products, medicinal chemistry, and materials science in the last decades. Recently, visible-light mediated photocatalysis has emerged as a powerful tool to promote many kinds of transformations. The dearomatization reactions induced by visible-light have also made significant progress during the past several years. This review provides an overview of visible-light induced dearomatization reactions classified based on the manner in which aromaticity is disrupted.
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Affiliation(s)
- Yuan-Zheng Cheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai 200032, China.
| | - Zuolijun Feng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai 200032, China.
| | - Xiao Zhang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai 200032, China.
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18
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Yuan JW, Chen Q, Wu WT, Zhao JJ, Yang LR, Xiao YM, Mao P, Qu LB. Selectfluor-mediated construction of 3-arylselenenyl and 3,4-bisarylselenenyl spiro[4.5]trienones via cascade annulation of N-phenylpropiolamides with diselenides. NEW J CHEM 2022. [DOI: 10.1039/d2nj00869f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A cascade annulation of N-phenylpropiolamides with diselenides leading to the construction of 3-arylselenenyl spiro[4.5]trienones was realized under mild conditions with Selectfluor as the sole oxidant.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Qian Chen
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Wen-Tao Wu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Jian-Jun Zhao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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19
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Yuan JW, Shen L, Ma M, Feng S, Yang W, Yang L, Xiao YM, Zhang S, Qu L. Visible-Light-Induced Tandem Difluoroalkylated Spirocyclization of N-Arylpropiolamides: Access to C3-Difluoroacetylated Spiro[4,5]trienones. NEW J CHEM 2022. [DOI: 10.1039/d2nj00131d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light-catalyzed difluoroacetylated spirocyclization of N-arylpropiolamides with ethyl bromodifluoroacetate as a CF2CO2Et radical precursor is described. This approach allows the formation of two carbon-carbon bonds and one carbon-oxygen bond in...
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20
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Yang DY, Liu L, Gu JY, He YH, Guan Z. Photoredox Catalyzed Radical Cascade Aroylation (Sulfonylation)/Cyclization Enables Access to Fused Indolo-pyridones. J Org Chem 2021; 86:18042-18055. [PMID: 34871003 DOI: 10.1021/acs.joc.1c02335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A visible-light-initiated radical cascade reaction toward the synthesis of structurally diverse fused Indolo-pyridones is described. The reaction involves the addition of aroyl or sulfonyl radicals to N-alkyl-acryloyl-1H-indole-3-carboxamides, cyclization, and oxidative aromatization. This telescoped method circumvents lengthy prefunctionalization steps of radical precursors, which is further underpinned by the superior compatibility with a series of C-centered radicals, allowing the rapid and facile construction of numerous valuable architectures.
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Affiliation(s)
- De-Yong Yang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Liang Liu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Jia-Yi Gu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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21
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Yuan JW, Mou CX, Zhang Y, Hu WY, Yang LR, Xiao YM, Mao P, Zhang SR, Qu LB. Transition-metal catalyzed oxidative spirocyclization of N-aryl alkynamides with methylarenes under microwave irradiation. Org Biomol Chem 2021; 19:10348-10358. [PMID: 34812461 DOI: 10.1039/d1ob01970h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A practical synthetic route to construct a variety of 3-benzyl spiro[4,5]trienones was developed via transition-metal Cu/Ag-catalyzed oxidative ipso-annulation of activated alkynes with unactivated toluenes using TBPB as an oxidant under microwave irradiation. This method allows the formation of two carbon-carbon bonds and one carbon-oxygen bond in a single reaction through a sequence of C-H oxidative coupling, ipso-carbocyclization and dearomatization. The advantages of this protocol are its operational simplicity and broad substrate scope, and the ability to afford the desired products in moderate to good yields.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Chen-Xu Mou
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yang Zhang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Wen-Yu Hu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Shou-Ren Zhang
- Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, P. R. China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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22
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Chalcogenative spirocyclization of N-aryl propiolamides with diselenides/disulfides promoted by Selectfluor. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
A practical and efficient synthetic route to construct a variety of 3-arylselenenyl/3-arylthio spiro[4.5]trienones was developed using Selectfluor reagent as a mild oxidant. This reaction proceeds via a sequence of electrophilic cation addition, spirocyclization and dearomatization, then offers an approach to introduce Se/S-centered cation into the C–C triple bonds. The utility of this protocol were justified by the excellent compatibility of a wide range of functional groups, good yields and scalability under mild reaction conditions.
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23
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Yu WQ, Xie J, Chen Z, Xiong BQ, Liu Y, Tang KW. Visible-Light-Induced Transition-Metal-Free Nitrogen-Centered Radical Strategy for the Synthesis of 2-Acylated 9 H-Pyrrolo[1,2- a]indoles. J Org Chem 2021; 86:13720-13733. [PMID: 34523335 DOI: 10.1021/acs.joc.1c01834] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A convenient and efficient visible-light-induced tandem acylation/cyclization of N-propargylindoles with aryl- or alkyl-substituted acyl oxime esters for the synthesis of 2-acyl-substituted 9H-pyrrolo[1,2-a]indoles under transition-metal-free conditions, which proceeds via nitrogen-centered radical-mediated cleavage of the C-C σ-bond in acyl oxime esters, is established. The aryl or alkyl acyl radicals, which come from acyl oxime esters, attack the C-C triple bonds in N-propargylindoles and then go through intramolecular cyclization/isomerization.
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Affiliation(s)
- Wen-Qin Yu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Jun Xie
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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24
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Zhao H, Ni N, Li X, Cheng D, Xu X. The decarboxylation coupling reaction of α-keto acid with Baylis-Hillman carbonates by visible light photoredox catalysis. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115337] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Chen P, Xie J, Chen Z, Xiong B, Liu Y, Yang C, Tang K. Visible‐Light‐Mediated Nitrogen‐Centered Radical Strategy: Preparation of 3‐Acylated Spiro[4,5]trienones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100852] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Pu Chen
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Jun Xie
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Bi‐Quan Xiong
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Chang‐An Yang
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Ke‐Wen Tang
- Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
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26
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Wang YC, Huang K, Lai X, Shi Z, Liu JB, Qiu G. Radical bromination-induced ipso cyclization- ortho cyclization sequence of N-hydroxylethyl- N-arylpropiolamides. Org Biomol Chem 2021; 19:1940-1944. [PMID: 33569553 DOI: 10.1039/d1ob00010a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A facile procedure is reported for the synthesis of various 2-bromo-1-phenyl-5,6-dihydro-3H,7aH-benzo[b]pyrrolo[2,1-c][1,4]oxazin-3-ones via a radical bromination-induced ipso cyclization-ortho cyclization sequence of N-arylpropiolamides in the presence of TBAB and oxone. The radical cyclization sequence involves a radical bromo α-addition into the alkyne, ipso-cyclization, and ortho-trapping of the spirocyclic intermediate.
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Affiliation(s)
- Yu-Chao Wang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Keke Huang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Xiaojing Lai
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China. and College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Zhongning Shi
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Jin-Biao Liu
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Guanyinsheng Qiu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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27
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Xia D, Duan XF. Alkylative Dearomatization by Using an Unactivated Aryl Nitro Group as a Leaving Group: Access to Diversified Alkylated Spiro[5.5]trienones. Org Lett 2021; 23:2548-2552. [PMID: 33752331 DOI: 10.1021/acs.orglett.1c00469] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The cleavage of an unactivated aryl nitro group triggered by alkyl radicals enables a dearomative cyclization, affording diversified alkylated spiro[5.5]trienones in good yields. Using readily available compounds (toluene and analogues, alkanes, ethers, ketones, etc.) as alkylating reagents, various alkyls have been implanted into the spirocycles via C(sp3)-H and Ar-NO2 bond activation with high functional group tolerance. This protocol provides a distinct method for the activation of the aryl nitro group.
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Affiliation(s)
- Dong Xia
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xin-Fang Duan
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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28
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Chen P, Chen Z, Xiong BQ, Liang Y, Tang KW, Xie J, Liu Y. Visible-light-mediated cascade cyanoalkylsulfonylation/cyclization of alkynoates leading to coumarins via SO2 insertion. Org Biomol Chem 2021; 19:3181-3190. [DOI: 10.1039/d1ob00142f] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A visible-light-mediated cascade cyanoalkylsulfonylation/cyclization of alkynoates with cycloketone oxime compounds for the preparation of 3-cyanoalkylsulfonylcoumarins via SO2 insertion is reported.
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Affiliation(s)
- Pu Chen
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Yun Liang
- Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province
- Hunan Normal University
- Changsha
- China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Jun Xie
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
- Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province
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29
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Zeng FL, Chen XL, Sun K, Zhu HL, Yuan XY, Liu Y, Qu LB, Zhao YF, Yu B. Visible-light-induced metal-free cascade cyclization of N-arylpropiolamides to 3-phosphorylated, trifluoromethylated and thiocyanated azaspiro[4.5]trienones. Org Chem Front 2021. [DOI: 10.1039/d0qo01410a] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photocatalytic strategies for the preparation of 3-functionalized azaspiro[4.5]trienones via a radical-initiated cascade annulation reaction was developed.
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Affiliation(s)
- Fan-Lin Zeng
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiao-Lan Chen
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Kai Sun
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Hu-Lin Zhu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiao-Ya Yuan
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yan Liu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Ling-Bo Qu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yu-Fen Zhao
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Bing Yu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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30
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Ji M, Xu L, Luo X, Jiang M, Wang S, Chen JQ, Wu J. Alkoxycarbonyl radicals from alkyloxalyl chlorides: photoinduced synthesis of isoquinolinediones under visible light irradiation. Org Chem Front 2021. [DOI: 10.1039/d1qo01368h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Alkyloxalyl chlorides, generated from alcohols and oxalyl chlorides, are used as alkoxycarbonyl radicals in the reaction of N-acryloyl benzamides under photocatalysis at room temperature.
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Affiliation(s)
- Mingjuan Ji
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Liang Xu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Xiangxiang Luo
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Minghui Jiang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Siyu Wang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Jian-Qiang Chen
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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31
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Yu K, Kong X, Yang J, Li G, Xu B, Chen Q. Electrochemical Oxidative Halogenation of N-Aryl Alkynamides for the Synthesis of Spiro[4.5]trienones. J Org Chem 2020; 86:917-928. [DOI: 10.1021/acs.joc.0c02429] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ke Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Xianqiang Kong
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Jiajun Yang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Guodong Li
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Qianjin Chen
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
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32
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Abstract
Visible light photocatalytic radical carbonylation has been established as a robust tool for the efficient synthesis of carbonyl-containing compounds. Acyl radicals serve as the key intermediates in these useful transformations and can be generated from the addition of alkyl or aryl radicals to carbon monoxide (CO) or various acyl radical precursors such as aldehydes, carboxylic acids, anhydrides, acyl chlorides or α-keto acids. In this review, we aim to summarize the impact of visible light-induced acyl radical carbonylation reactions on the synthesis of oxygen and nitrogen heterocycles. The discussion is mainly categorized based on different types of acyl radical precursors.
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33
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Zheng L, Xia PJ, Zhao QL, Qian YE, Jiang WN, Xiang HY, Yang H. Photocatalytic Hydroacylation of Alkenes by Directly Using Acyl Oximes. J Org Chem 2020; 85:11989-11996. [DOI: 10.1021/acs.joc.0c01818] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Lan Zheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Qing-Lan Zhao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yu-En Qian
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | | | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, P. R. China
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34
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Reddy CR, Kolgave DH, Subbarao M, Aila M, Prajapti SK. Ag-Catalyzed Oxidative ipso-Cyclization via Decarboxylative Acylation/Alkylation: Access to 3-Acyl/Alkyl-spiro[4.5]trienones. Org Lett 2020; 22:5342-5346. [DOI: 10.1021/acs.orglett.0c01588] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Dattahari H. Kolgave
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Muppidi Subbarao
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Mounika Aila
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Santosh Kumar Prajapti
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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35
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Hua J, Fang Z, Bian M, Ma T, Yang M, Xu J, Liu C, He W, Zhu N, Yang Z, Guo K. Electrochemical Synthesis of Spiro[4.5]trienones through Radical-Initiated Dearomative Spirocyclization. CHEMSUSCHEM 2020; 13:2053-2059. [PMID: 32012457 DOI: 10.1002/cssc.202000098] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 01/30/2020] [Indexed: 06/10/2023]
Abstract
A novel and green route has been developed for the electrochemical synthesis of spiro[4.5]trienones through radical-initiated dearomative spirocyclization of alkynes with diselenides. This metal-free and oxidant-free electrosynthesis reaction was performed in an undivided cell under mild conditions. A variety of selenation spiro[4.5]trienones products were prepared in moderate-to-good yields, showing a broad scope and functional group tolerance. Moreover, the developed continuous-flow system combined with electrosynthesis possesses the potential to achieve scaled-up reactions, overcoming the low efficiency of conventional electrochemical scaled-up reactions.
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Affiliation(s)
- Jiawei Hua
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Mixue Bian
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Tao Ma
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Man Yang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Jia Xu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - ChengKou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
| | - Zhao Yang
- College of Engineering, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210003, P.R. China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P.R. China
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36
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Liu T, Li Y, Jiang L, Wang J, Jin K, Zhang R, Duan C. Photo-mediated synthesis of halogenated spiro[4,5]trienones of N-aryl alkynamides with PhI(OCOCF 3) 2 and KBr/KCl. Org Biomol Chem 2020; 18:1933-1939. [PMID: 32101242 DOI: 10.1039/d0ob00057d] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A novel and convenient photo-mediated halogenated spirocyclization of N-(p-methoxyaryl)propiolamides has been developed. The photolysis of phenyliodine bis(trifluoroacetate) (PIFA) as an iodination reagent led to iodinated ipso-cyclization under the irradiation of a xenon lamp, while brominated ipso-cyclization or chlorinated ipso-cyclization was achieved by irradiating a mixture of PIFA and KBr/KCl under a blue LED. The present protocol simply utilizes light as the safe and clean energy source and doesn't require any external photocatalyst providing various 3-halospiro[4,5]trienones in good to excellent yields (up to 93%).
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Affiliation(s)
- Tong Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Yaming Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Linlin Jiang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Jiaao Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Kun Jin
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Rong Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
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37
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Peng X, Liu RX, Xiao XY, Yang L. Fe-catalyzed Decarbonylative Alkylative Spirocyclization of N-Arylcinnamamides: Access to Alkylated 1-Azaspirocyclohexadienones. Molecules 2020; 25:E432. [PMID: 31972970 PMCID: PMC7037460 DOI: 10.3390/molecules25030432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 12/15/2022] Open
Abstract
For the convenient introduction of simple linear/branched alkyl groups into biologically important azaspirocyclohexadienones, a practical Fe-catalyzed decarbonylative cascade spiro-cyclization of N-aryl cinnamamides with aliphatic aldehydes to provide alkylated 1-azaspiro-cyclohexadienones was developed. Aliphatic aldehydes were oxidative decarbonylated into primary, secondary and tertiary alkyl radicals conveniently and allows for the subsequent cascade construction of dual C(sp3)-C(sp3) and C=O bonds via radical addition, spirocyclization and oxidation sequence.
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Affiliation(s)
| | | | | | - Luo Yang
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education, Key Laboratory for Green Organic Synthesis and Application of Hunan Province, College of Chemistry, Xiangtan University, Hunan 411105, China; (X.P.); (R.-X.L.); (X.-Y.X.)
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38
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Liu Y, Chen Z, Wang QL, Chen P, Xie J, Xiong BQ, Zhang PL, Tang KW. Visible Light-Catalyzed Cascade Radical Cyclization of N-Propargylindoles with Acyl Chlorides for the Synthesis of 2-Acyl-9H-pyrrolo[1,2-a]indoles. J Org Chem 2020; 85:2385-2394. [DOI: 10.1021/acs.joc.9b03090] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Pu Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Jun Xie
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Pan-Liang Zhang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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39
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Dong W, Yuan Y, Xie X, Zhang Z. Visible-Light-Driven Dearomatization Reaction toward the Formation of Spiro[4.5]deca-1,6,9-trien-8-ones. Org Lett 2020; 22:528-532. [DOI: 10.1021/acs.orglett.9b04283] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wuheng Dong
- Medicine Center, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yao Yuan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaomin Xie
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Zhaoguo Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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40
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Liu Y, Wang QL, Chen Z, Li H, Xiong BQ, Zhang PL, Tang KW. Visible-light photoredox-catalyzed dual C–C bond cleavage: synthesis of 2-cyanoalkylsulfonylated 3,4-dihydronaphthalenes through the insertion of sulfur dioxide. Chem Commun (Camb) 2020; 56:3011-3014. [DOI: 10.1039/c9cc10057a] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel visible-light photoredox-catalyzed dual C–C bond cleavage of methylenecyclopropanes and cycloketone oximes for accessing 2-cyanoalkylsulfonated 3,4-dihydronaphthalenes is established.
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Affiliation(s)
- Yu Liu
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Hua Li
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Pan-Liang Zhang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
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41
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Manna S, Someswara Ashwathappa PK, Prabhu KR. Visible light-mediated ipso-annulation of activated alkynes: access to 3-alkylated spiro[4,5]-trienones, thiaspiro[4,5]-trienones and azaspiro[4,5]-trienones. Chem Commun (Camb) 2020; 56:13165-13168. [DOI: 10.1039/d0cc01217c] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel method for chemoselective difunctionalization of activated alkynes for synthesizing 3-alkylated spiro[4,5]-trienones, thiaspiro[4,5]-trienones and spirolactams has been uncovered using photoredox catalysis under visible light conditions.
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Affiliation(s)
- Sabyasachi Manna
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
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42
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Ho HE, Pagano A, Rossi-Ashton JA, Donald JR, Epton RG, Churchill JC, James MJ, O'Brien P, Taylor RJK, Unsworth WP. Visible-light-induced intramolecular charge transfer in the radical spirocyclisation of indole-tethered ynones. Chem Sci 2019; 11:1353-1360. [PMID: 34123259 PMCID: PMC8148050 DOI: 10.1039/c9sc05311e] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Indole-tethered ynones form an intramolecular electron donor–acceptor complex that can undergo visible-light-induced charge transfer to promote thiyl radical generation from thiols. This initiates a novel radical chain sequence, based on dearomatising spirocyclisation with concomitant C–S bond formation. Sulfur-containing spirocycles are formed in high yields using this simple and mild synthetic protocol, in which neither transition metal catalysts nor photocatalysts are required. The proposed mechanism is supported by various mechanistic studies, and the unusual radical initiation mode represents only the second report of the use of an intramolecular electron donor–acceptor complex in synthesis. Indole-tethered ynones form an intramolecular electron donor–acceptor complex that can undergo visible-light-induced charge transfer to promote thiyl radical generation from thiols.![]()
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Affiliation(s)
- Hon Eong Ho
- Department of Chemistry, University of York York YO10 5DD UK
| | - Angela Pagano
- Department of Chemistry and Industrial Chemistry, University of Genova via Dodecaneso, 31 16146 Genova Italy
| | | | - James R Donald
- Department of Chemistry, University of York York YO10 5DD UK
| | - Ryan G Epton
- Department of Chemistry, University of York York YO10 5DD UK
| | | | - Michael J James
- Department of Chemistry, University of York York YO10 5DD UK
| | - Peter O'Brien
- Department of Chemistry, University of York York YO10 5DD UK
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43
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Wang YC, Liu JB, Zhou H, Xie W, Rojsitthisak P, Qiu G. Ortho-Hydroxylative ipso-Cyclization of N-arylpropiolamide. J Org Chem 2019; 85:1906-1914. [DOI: 10.1021/acs.joc.9b02590] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yu-Chao Wang
- School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China
| | - Jin-Biao Liu
- School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China
| | - Hongwei Zhou
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China
| | - Wenlin Xie
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Guanyinsheng Qiu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China
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44
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Visible-light-mediated selective thiocyanation/ipso-cyclization/oxidation cascade for the synthesis of thiocyanato-containing azaspirotrienediones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130763] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Nair AM, Halder I, Khan S, Volla CMR. Metal Free Sulfonylative Spirocyclization of Alkenyl and Alkynyl Amides
via
Insertion of Sulfur Dioxide. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901321] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Akshay M. Nair
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
| | - Indranil Halder
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
| | - Salman Khan
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
| | - Chandra M. R. Volla
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
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46
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Ren X, Lu Z. Visible light promoted difunctionalization reactions of alkynes. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63278-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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47
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Bao H, Zhou B, Jin H, Liu Y. Copper-catalyzed three-component reaction of N-heteroaryl aldehydes, nitriles, and water. Org Biomol Chem 2019; 17:5021-5028. [PMID: 31044206 DOI: 10.1039/c9ob00599d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An efficient and straightforward method for the synthesis of N-heteroaroyl imides has been successfully developed involving a copper-catalyzed radical-triggered three-component reaction of N-heteroaryl aldehydes, nitriles, and water. Mechanistic studies indicate that the reaction may undergo a radical-triggered Ritter-type reaction in which water serves as the oxygen source for the formation of the C-O bond. The reaction has advantages such as a broad substrate scope for the N-heteroaryl aldehydes, atom economy, and simple operation.
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Affiliation(s)
- Hanyang Bao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Bingwei Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Hongwei Jin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Yunkui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
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48
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Lei Z, Banerjee A, Kusevska E, Rizzo E, Liu P, Ngai M. β‐Selective Aroylation of Activated Alkenes by Photoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zhen Lei
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryThe State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Arghya Banerjee
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryThe State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Elena Kusevska
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Eric Rizzo
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryThe State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Peng Liu
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Ming‐Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryThe State University of New York at Stony Brook Stony Brook NY 11794 USA
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49
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Lei Z, Banerjee A, Kusevska E, Rizzo E, Liu P, Ngai MY. β-Selective Aroylation of Activated Alkenes by Photoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:7318-7323. [PMID: 30994977 PMCID: PMC6527503 DOI: 10.1002/anie.201901874] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/18/2019] [Indexed: 01/24/2023]
Abstract
Late-stage synthesis of α,β-unsaturated aryl ketones remains an unmet challenge in organic synthesis. Reported herein is a photocatalytic non-chain-radical aroyl chlorination of alkenes by a 1,3-chlorine atom shift to form β-chloroketones as masked enones that liberate the desired enones upon workup. This strategy suppresses side reactions of the enone products. The reaction tolerates a wide array of functional groups and complex molecules including derivatives of peptides, sugars, natural products, nucleosides, and marketed drugs. Notably, addition of 2,6-di-tert-butyl-4-methyl-pyridine enhances the quantum yield and efficiency of the cross-coupling reaction. Experimental and computational studies suggest a mechanism involving PCET, formation and reaction of an α-chloro-α-hydroxy benzyl radical, and 1,3-chlorine atom shift.
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Affiliation(s)
- Zhen Lei
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, The State University of New York at Stony Brook, Stony Brook, NY, 11794, USA
| | - Arghya Banerjee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, The State University of New York at Stony Brook, Stony Brook, NY, 11794, USA
| | - Elena Kusevska
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Eric Rizzo
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, The State University of New York at Stony Brook, Stony Brook, NY, 11794, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Ming-Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, The State University of New York at Stony Brook, Stony Brook, NY, 11794, USA
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50
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Wang QL, Zhang WZ, Zhou Q, Zhou CS, Xiong BQ, Tang KW, Liu Y. Visible-light-mediated difunctionalization of vinylcyclopropanes for the synthesis of 1-sulfonylmethyl-3,4-dihydronaphthalenes. Org Biomol Chem 2019; 17:7918-7926. [DOI: 10.1039/c9ob01321k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An efficient method for the visible-light-mediated sulfonylation/arylation of the C–C σ-bond in vinylcyclopropanes with sulfonyl chlorides to synthesize 1-sulfonylmethyl-substituted 3,4-dihydronaphalenes has been developed.
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Affiliation(s)
- Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Wen-Zheng Zhang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Quan Zhou
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Cong-Shan Zhou
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering
- Hunan Institute of Science and Technology
- Yueyang 414006
- China
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