1
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Manna AS, Nandi R, Ghosh T, Pal S, Rahaman R, Maiti DK. Organic Base-Promoted C-N- and C-O-Coupled Domino Cyclization Strategy: Syntheses of Oxazine-6-ones and 4-Pyrimidinols. J Org Chem 2024; 89:5650-5664. [PMID: 38577786 DOI: 10.1021/acs.joc.4c00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Oxazine-6-one and 4-pyrimidinol are two important frameworks in pharmaceutical production. Herein, we disclosed a simple, efficient, inexpensive organic base-promoted and additive-stimulated protocol for the syntheses of variably functionalized oxazine-6-ones and 4-pyrimidinols employing acetonitrile solvent under conventional heating conditions using an oil bath through C-N and C-O coupled domino steps. This simple practicable productive protocol utilizes easily producible cheap precursors, namely, benzimidates or benzamidines, with differently substituted dicyano-olefins, and it comprises step economy, robustness, and moisture insensitive conditions affording high yield that avoids the use of transition-metal catalysts, multistep with multicomponent strategy, and harsh reaction conditions involving hazardous chemicals. This method is scalable into gram-scale production with good yield.
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Affiliation(s)
- Anindya S Manna
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Rajesh Nandi
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Tanmoy Ghosh
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Subhasis Pal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Rajjakfur Rahaman
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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2
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Pal S, Nandi R, Manna AS, Aich S, Maiti DK. Cu I-Catalyzed Radical Reaction of Benzimidates to Form Valuable 4,5-Dihydrooxazoles through Regioselective Aerobic Oxidative Cross-Coupling. J Org Chem 2024; 89:2703-2717. [PMID: 38295826 DOI: 10.1021/acs.joc.3c02773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
A straightforward Cu(I)-catalyzed oxidative cross-coupled organic transformation has been developed under mild conditions for the construction of functionalized 4,5-dihydrooxazoles through a four-bond-forming regiocontrolled C-C/C-N/C-O coupling strategy emerging benzimidates, paraformaldehyde, and 1,3-diketo analogues using eco-friendly O2 as the sole oxidant. The fundamental features of these designed approaches involve operational simplicity, selectivity, generality, and a broad substrate scope with high yields under the same reaction conditions.
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Affiliation(s)
- Subhasis Pal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Rajesh Nandi
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Anindya S Manna
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Shobhon Aich
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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3
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Aich S, Nandi R, Chatterjee N, Gayen KS, Pal S, Maiti DK. Catalytic I 2-moist DMSO-mediated synthesis of valuable α-amidohydroxyketones and unsymmetrical gem-bisamides from benzimidates. Org Biomol Chem 2023; 21:2524-2530. [PMID: 36876635 DOI: 10.1039/d3ob00165b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
We developed an efficient and straightforward I2-catalyzed strategy for the synthesis of functionalized α-amidohydroxyketones and symmetrical and unsymmetrical bisamides using incipient benzimidate scaffolds as starting materials and moist-DMSO as a reagent and solvent. The developed method proceeds through chemoselective intermolecular N-C-bond formation of benzimidates and the α-C(sp3)-H bond of acetophenone moieties. The key advantages of these design approaches include broad substrate scope and moderate yields. High-resolution mass spectrometry of the reaction progress and labeling experiments provided suitable evidence regarding the possible mechanism. 1H nuclear magnetic resonance titration revealed notable interaction between the synthesized α-amidohydroxyketones and some anions as well as biologically important molecules, which revealed a promising recognition property of these valuable motifs.
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Affiliation(s)
- Shobhon Aich
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India.
| | - Rajesh Nandi
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India.
| | - Nirbhik Chatterjee
- Department of Chemistry, Kanchrapara College, North 24 parganas-743145, India
| | | | - Subhasis Pal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India.
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India.
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4
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Wang B, Zhang GM, Zhang H, Wang JY. B(C 6F 5) 3-catalyzed oxidation of α-diazoesters using DMF and molecular oxygen as oxygen sources. RSC Adv 2022; 12:33584-33588. [PMID: 36505720 PMCID: PMC9682326 DOI: 10.1039/d2ra05739e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/09/2022] [Indexed: 11/24/2022] Open
Abstract
A metal-free catalytic oxidation of α-diazoesters via a green environmental-friendly route was developed. The α-diazoesters were converted to α-ketoesters using DMF and molecular oxygen as oxygen sources and B(C6F5)3 as the catalyst, without any additives. This protocol has a broad adaptability of substrates and good compatibility with a range of functional groups, and it offers new insight into reactions catalyzed by B(C6F5)3.
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Affiliation(s)
- Bei Wang
- Department of Chemistry, Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua UniversityChengdu 610041P. R. China,Chengdu Institute of Organic Chemistry, Chinese Academy of SciencesChengdu 610041P. R. China,University of Chinese Academy of SciencesBeijing 100049P. R. China
| | - Guo-Min Zhang
- Department of Chemistry, Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua UniversityChengdu 610041P. R. China,Chengdu Institute of Organic Chemistry, Chinese Academy of SciencesChengdu 610041P. R. China,University of Chinese Academy of SciencesBeijing 100049P. R. China
| | - Hua Zhang
- Department of Chemistry, Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua UniversityChengdu 610041P. R. China,Chengdu Institute of Organic Chemistry, Chinese Academy of SciencesChengdu 610041P. R. China,University of Chinese Academy of SciencesBeijing 100049P. R. China
| | - Ji-Yu Wang
- Department of Chemistry, Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua UniversityChengdu 610041P. R. China,Chengdu Institute of Organic Chemistry, Chinese Academy of SciencesChengdu 610041P. R. China
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5
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Ruan M, Chen L, Wen Z, Yang F, Ma C, Lu C, Yang G, Gao M. Electrochemical two-electron oxygen reduction reaction (ORR) induced aerobic oxidation of α-diazoesters. Chem Commun (Camb) 2022; 58:2168-2171. [PMID: 35060985 DOI: 10.1039/d1cc06945d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Electrochemical oxygen reduction reaction (ORR) is a powerful tool for introducing oxygen functional groups in synthetic chemistry. However, compared with the well-developed one-electron oxygen reduction process, the applications of two-electron oxygen reduction in electrochemical synthesis have been seldom studied. We present herein our recent progress in the oxidation of α-diazoesters to α-ketoesters by in situ generated hydrogen peroxide via a two-electron oxygen reduction approach. A diverse collection of valuable α-ketoester products was obtained with moderate to high yields under an exogenous-oxidant-free and metal catalyst-free electrochemical conditions.
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Affiliation(s)
- Mengyao Ruan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Liang Chen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Ziyang Wen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Fan Yang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Chao Ma
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Cuifen Lu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Guichun Yang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Meng Gao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
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6
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Hyodo K, Miki K, Yauchi T. Synthesis of Ethyl Acetohydroximate and Derivatives from Imidate Hydrochloride. J Org Chem 2022; 87:2959-2965. [DOI: 10.1021/acs.joc.1c02809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kengo Hyodo
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kensho Miki
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tomoya Yauchi
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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7
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Wu X, Gao W, Zhou Y, Liu M, Wu H. Tris(pentafluorophenyl)borane‐Catalyzed Oxygen Insertion Reaction of
α
‐Diazoesters (α‐Diazoamides) with Dimethyl Sulfoxide. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xiao‐Yang Wu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Wen‐Xia Gao
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Yun‐Bing Zhou
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Miao‐Chang Liu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Hua‐Yue Wu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
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8
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Nagae H, Sakamoto K, Fujiwara S, Schindler T, Kon Y, Sato K, Okuda J, Mashima K. Aerobic oxygenation of α-methylene ketones under visible-light catalysed by a CeNi 3 complex with a macrocyclic tris(salen)-ligand. Chem Commun (Camb) 2021; 57:11169-11172. [PMID: 34617527 DOI: 10.1039/d1cc04540g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A hetero-tetranuclear CeNi3 complex with a macrocyclic ligand catalysed the aerobic oxygenation of a methylene group adjacent to a carbonyl group under visible-light radiation to produce the corresponding α-diketones. The visible-light induced homolysis of the Ce-O bond of a bis(enolate) intermediate is proposed prior to aerobic oxygenation.
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Affiliation(s)
- Haruki Nagae
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Kazutaka Sakamoto
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Sakiko Fujiwara
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Tobias Schindler
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, Aachen D-52062, Germany
| | - Yoshihiro Kon
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, Tsukuba, Ibaraki 305-8565, Japan
| | - Kazuhiko Sato
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, Tsukuba, Ibaraki 305-8565, Japan
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, Aachen D-52062, Germany
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
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9
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Jia Q, Yin G, Lan Y, Lin Y, Ren Q. Base‐mediated Benzannulation Reactions for the Synthesis of Densely Functionalized Aryl α‐Keto Esters. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qianfa Jia
- College of Chemistry Chemical Engineering and Materials Science Yibin University Yinbin 644000 P. R. China
| | - Guoliang Yin
- College of Chemistry Chemical Engineering and Materials Science Yibin University Yinbin 644000 P. R. China
| | - Yunfei Lan
- College of Pharmaceutical Science Southwest University Chongqing 400715 P. R. China
| | - Yinhe Lin
- College of Chemistry Chemical Engineering and Materials Science Yibin University Yinbin 644000 P. R. China
| | - Qiao Ren
- College of Pharmaceutical Science Southwest University Chongqing 400715 P. R. China
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10
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Tang C, Qiu X, Cheng Z, Jiao N. Molecular oxygen-mediated oxygenation reactions involving radicals. Chem Soc Rev 2021; 50:8067-8101. [PMID: 34095935 DOI: 10.1039/d1cs00242b] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Molecular oxygen as a green, non-toxic and inexpensive oxidant has displayed lots of advantages compared with other oxidants towards more selective, sustainable, and environmentally benign organic transformations. The oxygenation reactions which employ molecular oxygen or ambient air as both an oxidant and an oxygen source provide an efficient route to the synthesis of oxygen-containing compounds, and have been demonstrated in practical applications such as pharmaceutical synthesis and late-stage functionalization of complex molecules. This review article introduces the recent advances of radical processes in molecular oxygen-mediated oxygenation reactions. Reaction scopes, limitations and mechanisms are discussed based on reaction types and catalytic systems. Conclusions and perspectives are also given in the end.
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Affiliation(s)
- Conghui Tang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China.
| | - Xu Qiu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Zengrui Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China. and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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11
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Kim HY, Oh K. Recent advances in the copper-catalyzed aerobic C sp3-H oxidation strategy. Org Biomol Chem 2021; 19:3569-3583. [PMID: 33908570 DOI: 10.1039/d1ob00081k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interplay between copper catalysts and molecular oxygen provides the opportunity to control the promiscuous catalytic behaviors in aerobic Csp3-H bond oxidations without using stoichiometric amounts of oxidants. This mini-review aims to cover the Cu-catalyzed aerobic benzylic and α-carbonyl Csp3-H oxidations and that of the carbon next to an amine group in the past five years. The development of tandem multicomponent reactions employing aerobic Csp3-H bond oxidations will be discussed to highlight the controlled catalyst behaviors and the catalyst interactions between multiple reaction components.
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Affiliation(s)
- Hun Young Kim
- Department of Global Innovative Drugs, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea.
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12
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Liu R, Liu Q, Meng H, Ding H, Hao J, Ji Z, Yue H, Wei W. Metal-free visible-light-induced aerobic oxidation of α-diazoesters leading to α-ketoesters in air. Org Chem Front 2021. [DOI: 10.1039/d0qo01587c] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A metal-free and visible-light-induced strategy has been established for the construction of α-ketoesters via aerobic oxidation of α-diazoesters with dioxygen in air at room temperature.
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Affiliation(s)
- Ruisheng Liu
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Qishun Liu
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Haoran Meng
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Hongyu Ding
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Jindong Hao
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Zhongyin Ji
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Huilan Yue
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Qinghai 810008
- China
| | - Wei Wei
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
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13
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Zhao B, Yang L, Cheng K, Zhou L, Wan JP. Visible Light Induced Oxidation of α-Diazo Esters for the Transition Metal-Free Synthesis of α-Keto Esters. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202111020] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Abstract
A practical Cu-catalyzed oxidation of α-diazoesters to α-ketoesters using molecular oxygen as an oxidant has been developed. Both electron-poor and electron-rich aryl α-diazoesters are suitable substrates and provide the α-ketoesters in good yields. In this oxidative system, α-diazo-β-ketoesters are also compatible as substrates but unexpectedly furnish α-ketoesters via C-C bond cleavage, rather than the vicinal tricarbonyl products.
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Affiliation(s)
- Changming Xu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Yongchang Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Lei Bai
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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15
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Jung Y, Hong JE, Baek ST, Hong S, Kwak JH, Park Y. 4-Dimethylaminopyridine-Catalyzed Metal-Free Aerobic Oxidation of Aryl α-Halo Esters to Aryl α-Keto Esters. ACS OMEGA 2020; 5:22951-22957. [PMID: 32954144 PMCID: PMC7495759 DOI: 10.1021/acsomega.0c02511] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
A novel, metal-free aerobic oxidation method is described. 4-Dimethylaminopyridine (DMAP) successfully catalyzed the oxidation of aryl α-halo esters to corresponding aryl α-keto esters (up to 95% yield) under mild reaction conditions (Li2CO3, dimethylacetamide, air, and room temperature). A mechanism has been proposed where the oxidation proceeds through a [3 + 2] cycloaddition between O2 in an air atmosphere and pyridinium ylides. The ylides are supposedly generated from aryl α-halo esters and DMAP in the presence of carbonates. Based on the plausible mechanism, the potential of DMAP as a catalyst in oxidation reactions was extended.
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Affiliation(s)
- Yeonghun Jung
- College
of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Jee Eun Hong
- College
of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Seung Tae Baek
- College
of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Suckchang Hong
- College
of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic
of Korea
| | - Jae-Hwan Kwak
- College
of Pharmacy, Brain Busan 21 Plus Program, 309 Suyeong-ro,
Nam-gu, Kyungsung University, Busan 48434, Korea
| | - Yohan Park
- College
of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
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16
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17
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Nandi R, Mandal PK, Kayet A, Bhattachariya T, Ghosh S, Maiti DK. Benzimidates as gem-Diamidation and Amidoindolyzation Cascade Synthons with a Hydrated Ni II Catalyst. Org Lett 2020; 22:3474-3478. [PMID: 32275155 DOI: 10.1021/acs.orglett.0c00928] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We contributed a new benzimidate chemistry through moisture-insensitive NiII/NiII-FeIII combo-catalysis for a simultaneous 2-3 bond-forming gem-diamidation and amidoindolyzation cascade reaction to construct symmetrical and unsymmetrical gem-(arylmethylene)amides and indolo(arylmethylene)amides, using emerging benzimidate synthons. The operational simplicity, mild nature, generality, and robustness of the strategy were validated through syntheses of a wide range of new molecules, labile sugar-based chiral compounds, and pharmaceuticals with high yields under the same reaction conditions.
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Affiliation(s)
- Rajesh Nandi
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata - 700009, India
| | - Prakash K Mandal
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata - 700009, India
| | - Anirban Kayet
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata - 700009, India
| | - Tamalika Bhattachariya
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata - 700009, India
| | - Sukla Ghosh
- Department of Chemistry, Women's College, Calcutta, Kolkata - 700003, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata - 700009, India
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18
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Luo X, He R, Liu Q, Gao Y, Li J, Chen X, Zhu Z, Huang Y, Li Y. Metal-Free Oxidative Esterification of Ketones and Potassium Xanthates: Selective Synthesis of α-Ketoesters and Esters. J Org Chem 2020; 85:5220-5230. [DOI: 10.1021/acs.joc.9b03272] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xianglin Luo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Runfa He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Qiang Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yanping Gao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jingqing Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Zhongzhi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
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19
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Wang Y, Zou J, Wang H, Peng X, Lu Y, Feng Y, Chen C, Shi T, Wang Z. A Facile Approach to α‐Keto Esters via Oxidative Esterification of α‐Amino Carbonyl Compounds. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yong‐qiang Wang
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Jiao‐xia Zou
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Hui‐hong Wang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 China
| | - Xue Peng
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Ying‐mei Lu
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Yi‐yue Feng
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Chen Chen
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Tao Shi
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
| | - Zhen Wang
- School of PharmacyLanzhou University West Donggang Road. No. 199 Lanzhou 730000 China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 China
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20
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Sharma AK, Kumar P, Vishwakarma RK, Singh KN. Visible‐Light‐Enabled Synthesis of Pyridyl Benzamides via Oxidative Decarbethoxylation using Copper(I) Iodide/Air at Room Temperature. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anup Kumar Sharma
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| | - Promod Kumar
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| | - Ramesh Kumar Vishwakarma
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
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21
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Sterckx H, Morel B, Maes BUW. Catalytic Aerobic Oxidation of C(sp 3 )-H Bonds. Angew Chem Int Ed Engl 2019; 58:7946-7970. [PMID: 30052305 DOI: 10.1002/anie.201804946] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Indexed: 01/04/2023]
Abstract
Oxidation reactions are a key technology to transform hydrocarbons from petroleum feedstock into chemicals of a higher oxidation state, allowing further chemical transformations. These bulk-scale oxidation processes usually employ molecular oxygen as the terminal oxidant as at this scale it is typically the only economically viable oxidant. The produced commodity chemicals possess limited functionality and usually show a high degree of symmetry thereby avoiding selectivity issues. In sharp contrast, in the production of fine chemicals preference is still given to classical oxidants. Considering the strive for greener production processes, the use of O2 , the most abundant and greenest oxidant, is a logical choice. Given the rich functionality and complexity of fine chemicals, achieving regio/chemoselectivity is a major challenge. This review presents an overview of the most important catalytic systems recently described for aerobic oxidation, and the current insight in their reaction mechanism.
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Affiliation(s)
- Hans Sterckx
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium
| | - Bénédicte Morel
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium
| | - Bert U W Maes
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium
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22
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Sterckx H, Morel B, Maes BUW. Katalytische, aerobe Oxidation von C(sp
3
)‐H‐Bindungen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201804946] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hans Sterckx
- Department of Chemistry University of Antwerp Groenenborgerlaan 171 B-2020 Antwerpen Belgien
| | - Bénédicte Morel
- Department of Chemistry University of Antwerp Groenenborgerlaan 171 B-2020 Antwerpen Belgien
| | - Bert U. W. Maes
- Department of Chemistry University of Antwerp Groenenborgerlaan 171 B-2020 Antwerpen Belgien
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23
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LaMartina KB, Kuck HK, Oglesbee LS, Al-Odaini A, Boaz NC. Selective benzylic C-H monooxygenation mediated by iodine oxides. Beilstein J Org Chem 2019; 15:602-609. [PMID: 30931001 PMCID: PMC6423598 DOI: 10.3762/bjoc.15.55] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/19/2019] [Indexed: 12/30/2022] Open
Abstract
A method for the selective monooxdiation of secondary benzylic C–H bonds is described using an N-oxyl catalyst and a hypervalent iodine species as a terminal oxidant. Combinations of ammonium iodate and catalytic N-hydroxyphthalimide (NHPI) were shown to be effective in the selective oxidation of n-butylbenzene directly to 1-phenylbutyl acetate in high yield (86%). This method shows moderate substrate tolerance in the oxygenation of substrates containing secondary benzylic C–H bonds, yielding the corresponding benzylic acetates in good to moderate yield. Tertiary benzylic C–H bonds were shown to be unreactive under similar conditions, despite the weaker C–H bond. A preliminary mechanistic analysis suggests that this NHPI-iodate system is functioning by a radical-based mechanism where iodine generated in situ captures formed benzylic radicals. The benzylic iodide intermediate then solvolyzes to yield the product ester.
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Affiliation(s)
- Kelsey B LaMartina
- Department of Chemistry and Physics, North Central College, 30 N. Brainard Street, Naperville, IL 60540 USA
| | - Haley K Kuck
- Department of Chemistry and Physics, North Central College, 30 N. Brainard Street, Naperville, IL 60540 USA
| | - Linda S Oglesbee
- Department of Chemistry and Physics, North Central College, 30 N. Brainard Street, Naperville, IL 60540 USA
| | - Asma Al-Odaini
- Department of Chemistry and Physics, North Central College, 30 N. Brainard Street, Naperville, IL 60540 USA
| | - Nicholas C Boaz
- Department of Chemistry and Physics, North Central College, 30 N. Brainard Street, Naperville, IL 60540 USA.,Department of Chemistry, Frick Chemical Laboratory, Princeton University, Washington Road, Princeton, NJ 08544 USA.,Permanent address: Department of Chemistry, North Central College, 30 N. Brainard Street, Naperville, IL 60540 USA; phone: +1-630-637-5187
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24
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Chemoselective aerobic oxidation of 2-amino-N-benzylanilines into N-(2-aminophenyl)imines via a nitroxide-free copper catalysis. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Meng X, Bi X, Chen G, Chen B, Zhao P. Heterogeneous Esterification from α-Hydroxy Ketone and Alcohols through a Tandem Oxidation Process over a Hydrotalcite-Supported Bimetallic Catalyst. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00265] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xu Meng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xiuru Bi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gexin Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Peiqing Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
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26
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Iodine-catalyzed synthesis of 5-benzoyl-8H-phthalazino[1,2-b]quinazolin-8-one derivatives via a domino reaction involving a benzyl automatic oxidation by oxygen. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Das DK, Kumar Pampana VK, Hwang KC. Copper catalyzed photoredox synthesis of α-keto esters, quinoxaline, and naphthoquinone: controlled oxidation of terminal alkynes to glyoxals. Chem Sci 2018; 9:7318-7326. [PMID: 30294421 PMCID: PMC6167948 DOI: 10.1039/c8sc03447h] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 08/28/2018] [Indexed: 12/17/2022] Open
Abstract
Controlled oxidation of the terminal C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C triple bond using O2 (1 atm) as an oxidant and reagent.
Herein, we report a facile visible light induced copper catalyzed controlled oxidation of terminal C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C alkynes to α-keto esters and quinoxalines via formation of phenylglyoxals as stable intermediates, under mild conditions by using molecular O2 as a sustainable oxidant. The current copper catalysed photoredox method is simple, highly functional group compatible with a broad range of electron rich and electron poor aromatic alkynes as well as aliphatic alcohols (1°, 2° and 3° alcohols), providing an efficient route for the preparation of α-keto esters (43 examples), quinoxaline and naphthoquinone with higher yields than those in the literature reported thermal processes. Furthermore, the synthetic utility of the products has been demonstrated in the synthesis of two biologically active molecules, an E. coli DHPS inhibitor and CFTR activator, using the current photoredox process. In addition, we applied this methodology to the one-pot synthesis of a heterocyclic compound (quinoxaline, an FLT3 inhibitor) by trapping the intermediate phenylglyoxal with O-phenylenediamine. The intermediate phenylglyoxal can also be isolated and further reacted with an internal alkyne to form naphthoquinone. This process can be readily scaled up to the gram scale.
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Affiliation(s)
- Deb Kumar Das
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan , Republic of China .
| | - V Kishore Kumar Pampana
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan , Republic of China .
| | - Kuo Chu Hwang
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan , Republic of China .
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28
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Kumar Y, Jaiswal Y, Kumar A. Visible-Light-Mediated Remote γ-C(sp3)–H Functionalization of Alkylimidates: Synthesis of 4-Iodo-3,4-dihydropyrrole Derivatives. Org Lett 2018; 20:4964-4969. [DOI: 10.1021/acs.orglett.8b02022] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
| | - Yogesh Jaiswal
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
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29
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Kumar Y, Jaiswal Y, Thakur R, Kumar A. A Straightforward Synthesis of α
-Amino Diaryl Ketones from (Hetero)Arylacetonitriles Promoted by N
-Bromosuccinimide. ChemistrySelect 2018. [DOI: 10.1002/slct.201801073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna; Bihta 801103 Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna; Bihta 801103 Bihar India
| | - Rima Thakur
- Department of Chemistry; National Institute of Technology Patna; Patna- 800005 Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna; Bihta 801103 Bihar India
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30
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Guo S, Wang F, Tao L, Zhang X, Fan X. Solvent-Dependent Copper-Catalyzed Indolyl C3-Oxygenation and N1-Cyclization Reactions: Selective Synthesis of 3 H-Indol-3-ones and Indolo[1,2- c]quinazolines. J Org Chem 2018. [PMID: 29513984 DOI: 10.1021/acs.joc.8b00231] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple and practical procedure for the selective preparation of 3 H-indol-3-one and indolo[1,2- c]quinazoline derivatives through copper-catalyzed aerobic oxygenation and intramolecular cyclization reactions of 2-(2-amidoaryl)-1 H-indoles in the presence of acid has been disclosed. Interestingly, the reaction outcomes are exclusively dependent on the reaction medium employed. With DMF as the solvent, the amide moiety of indole substrates could act as an auxiliary to enable the indole's oxygenation reaction with molecular oxygen from air as the oxidant to give 3 H-indol-3-one derivatives in a highly selective manner. On the other hand, when the reactions were performed in 1,4-dioxane, the amide moiety switched to participate in an intramolecular indolyl N1-cyclization to afford indolo[1,2- c]quinazolines as the predominating products.
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Affiliation(s)
- Shenghai Guo
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Fang Wang
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Li Tao
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Xuesen Fan
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
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31
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Wang L, Li H, Wang L. Iron-Catalyzed C(sp3)–H Acyloxylation of Aryl-2H Azirines with Hypervalent Iodine(III) Reagents. Org Lett 2018; 20:1663-1666. [DOI: 10.1021/acs.orglett.8b00442] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lulu Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongji Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, P. R. China
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32
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Kumar Y, Jaiswal Y, Kumar A. Two-Step One-Pot Synthesis of Unsymmetrical (Hetero)Aryl 1,2-Diketones by Addition-Oxygenation of Potassium Aryltrifluoroborates to (Hetero)Arylacetonitriles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701625] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
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33
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Jaiswal Y, Kumar Y, Kumar A. Palladium-Catalyzed Regioselective C-H Alkenylation of Arylacetamides via Distal Weakly Coordinating Primary Amides as Directing Groups. J Org Chem 2018; 83:1223-1231. [PMID: 29276827 DOI: 10.1021/acs.joc.7b02618] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein we disclose the efficient Pd(II)-catalyzed and regioselective ortho C-H alkenylation of arylacetamide derivatives, viz. weakly coordinating aliphatic primary amides. This protocol utilizes ubiquitous free primary amides as the directing group and circumvents two troublesome steps of installation and removal of an external auxiliary. This strategy directly enables the incorporation of a synthetically versatile olefin in the products in moderate to good yields with regio- and distereoselectivity. The alkenylated acetamides can be easily manipulated and further transformed into a variety of useful derivatives.
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Affiliation(s)
- Yogesh Jaiswal
- Department of Chemistry, Indian Institute of Technology Patna , Bihta 801106, Bihar, India
| | - Yogesh Kumar
- Department of Chemistry, Indian Institute of Technology Patna , Bihta 801106, Bihar, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna , Bihta 801106, Bihar, India
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34
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Jaiswal Y, Kumar Y, Pal J, Subramanian R, Kumar A. Rapid synthesis of polysubstituted phenanthridines from simple aliphatic/aromatic nitriles and iodo arenes via Pd(ii) catalyzed domino C–C/C–C/C–N bond formation. Chem Commun (Camb) 2018; 54:7207-7210. [DOI: 10.1039/c8cc03556c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient method has been developed for the synthesis of polysubstituted phenanthridiene via palladium catalyzed nucleophilic addition of aryl iodides to nitriles followed by dual C–H activation.
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Affiliation(s)
- Yogesh Jaiswal
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta 801106
- India
| | - Yogesh Kumar
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta 801106
- India
| | - Jagannath Pal
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta 801106
- India
| | - Ranga Subramanian
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta 801106
- India
| | - Amit Kumar
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta 801106
- India
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35
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Sterckx H, Sambiagio C, Médran-Navarrete V, Maes BUW. Copper-Catalyzed Aerobic Oxygenation of Benzylpyridine N
-Oxides and Subsequent Post-Functionalization. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700588] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hans Sterckx
- Organic Synthesis (ORSY); Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
| | - Carlo Sambiagio
- Organic Synthesis (ORSY); Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
| | - Vincent Médran-Navarrete
- Organic Synthesis (ORSY); Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
| | - Bert U. W. Maes
- Organic Synthesis (ORSY); Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
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36
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Gaspa S, Porcheddu A, Valentoni A, Garroni S, Enzo S, De Luca L. A Mechanochemical-Assisted Oxidation of Amines to Carbonyl Compounds and Nitriles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700689] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Silvia Gaspa
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Cagliari; Cittadella Universitaria 09042 Monserrato Italy
| | - Antonio Valentoni
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
| | - Sebastiano Garroni
- International Research Centre in Critical Raw Materials-ICCRAM; University of Burgos; Plaza Misael Banuelos s/n 09001 Burgos Spain
- Advanced Materials; Nuclear Technology and Applied Bio/Nanotechnology, Consolidated Research Unit UIC-154, University of Burgos; Hospital del Rey s/n 09001 Burgos Spain
| | - Stefano Enzo
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
| | - Lidia De Luca
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
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37
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Kumar Y, Jaiswal Y, Shaw M, Kumar A. Metal-Free Catalyst-Controlled Chemoselective Synthesis of Aryl α
-Ketoesters and Primary α
-Ketoamides from Aryl Acetimidates. ChemistrySelect 2017. [DOI: 10.1002/slct.201701322] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
| | - Mukta Shaw
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna, Bihta; 801103 Bihar India
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38
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Jaiswal Y, Kumar Y, Thakur R, Pal J, Subramanian R, Kumar A. Primary Amide Directed Regioselective ortho-C–H-Arylation of (Aryl)Acetamides. J Org Chem 2016; 81:12499-12505. [DOI: 10.1021/acs.joc.6b02353] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yogesh Jaiswal
- Department
of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Yogesh Kumar
- Department
of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Rima Thakur
- Department
of Chemistry, National Institute of Technology Patna, Patna 800005, Bihar, India
| | - Jagannath Pal
- Department
of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Ranga Subramanian
- Department
of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Amit Kumar
- Department
of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
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