1
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Liu Y, Deng L, Guo H, Wan JP. Annulative Nonaromatic Newman-Kwart-Type Rearrangement for the Synthesis of Sulfur Heteroaryls. Org Lett 2024; 26:46-50. [PMID: 38149825 DOI: 10.1021/acs.orglett.3c03581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
By employing enaminones and thiuram disulfides as starting materials, the frontiers of Newman-Kwart rearrangement have been expanded to the alkenyl system for the first time. In addition, instead of leading to the formation of simple carbamothioates, the rearrangement has led to the unprecedented construction of S-heteroaryls. Depending on the differences in the enaminone structure, the efficient synthesis of functionalized isothiazoles and thiophenes has been achieved.
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Affiliation(s)
- Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Leiling Deng
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Haijin Guo
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
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2
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Metal, iodine and oxidant-free electrosynthesis of substituted indoles from 1-(2-aminophenyl)alcohols. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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3
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Doba T, Shang R, Nakamura E. Iron-Catalyzed C–H Activation for Heterocoupling and Copolymerization of Thiophenes with Enamines. J Am Chem Soc 2022; 144:21692-21701. [DOI: 10.1021/jacs.2c09470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Takahiro Doba
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Rui Shang
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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4
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Yescas-Galicia D, Restrepo-Osorio RA, García-González AN, Hernández-Benítez RI, Espinoza-Hicks JC, Escalante CH, Barrera E, Santoyo BM, Delgado F, Tamariz J. Divergent Pd-catalyzed Functionalization of 4-Oxazolin-2-ones and 4-Methylene-2-oxazolidinones and Synthesis of Heterocyclic-Fused Indoles. J Org Chem 2022; 87:13034-13052. [PMID: 36153994 DOI: 10.1021/acs.joc.2c01563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium-catalyzed functionalization was presently performed on two building blocks: 4-oxazolin-2-ones and 4-methylene-2-oxazolidinones. Direct Heck arylation of 4-oxazolin-2-ones led to a series of 5-aryl-4-oxazolin-2-ones, including analogues with N-chiral auxiliary, in an almost quantitative yield. The Pd(II)-catalyzed homocoupling reaction of 4-oxazolin-2-ones provided novel heterocyclic across-ring dienes. Meanwhile, the intramolecular cross-coupling of N-aryl-4-methylene-2-oxazolidinones furnished a series of oxazolo[3,4-a]indol-3-ones. Further functionalization of 4-methylene-2-oxazolidinones afforded substituted indoles and heterocyclic-fused indoles with aryl, bromo, carbinol, formyl, and vinyl groups. A computational study was carried out to account for the behavior of the formylated derivatives. The currently developed methodology was applied to a new formal total synthesis of ellipticine.
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Affiliation(s)
- Daniel Yescas-Galicia
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Rodrigo A Restrepo-Osorio
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Ailyn N García-González
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Roberto I Hernández-Benítez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - José C Espinoza-Hicks
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario S/N, 31000 Chihuahua, Chih., Mexico
| | - Carlos H Escalante
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Edson Barrera
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Blanca M Santoyo
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
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5
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Chang X, Chen X, Lu S, Zhao Y, Ma Y, Zhang D, Yang L, Sun P. Electrochemical [3+2] Cycloaddition of Anilines and 1,3‐Dicarbonyl Compounds: Construction of Multisubstituted Indoles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoqiang Chang
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica CHINA
| | - Xingyu Chen
- Institute of Chinese Materia Medica and Artemisinin Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China CHINA
| | - Sixian Lu
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica CHINA
| | - Yifan Zhao
- Institute of Chinese Materia Medica and Artemisinin Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China CHINA
| | | | | | - Lan Yang
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica CHINA
| | - Peng Sun
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica CHINA
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6
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Berjis A, Mirza B, Anaraki-Ardakani H. One-Pot Synthesis of Highly Functionalized Indole in Choline Chloride/Oxalic Acid as a Deep Eutectic Solvent. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2089172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anita Berjis
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Behrooz Mirza
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
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7
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Ge D, Sun LW, Yu ZL, Luo XL, Xu P, Shen ZL. Regioselective synthesis of 6-nitroindole derivatives from enaminones and nitroaromatic compounds via transition metal-free C-C and C-N bond formation. Org Biomol Chem 2022; 20:1493-1499. [PMID: 35107115 DOI: 10.1039/d1ob02443d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Few methods are known for the synthesis of nitroindole derivatives. A simple and practical Cs2CO3-promoted method for the synthesis of 6-nitroindole derivatives from enaminones and nitroaromatic compounds has been developed. Two new C-C and C-N bonds were formed in a highly regioselective manner under transition metal-free conditions.
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Affiliation(s)
- Danhua Ge
- Chemical Experiment Teaching Center, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Li-Wen Sun
- Chemical Experiment Teaching Center, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Zi-Lun Yu
- Chemical Experiment Teaching Center, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Xin-Long Luo
- Chemical Experiment Teaching Center, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Pei Xu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Zhi-Liang Shen
- Chemical Experiment Teaching Center, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
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8
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Nasri S, Bayat M, Miankooshki FR, Samet NH. Recent developments in green approaches for sustainable synthesis of indole-derived scaffolds. Mol Divers 2022; 26:3411-3445. [PMID: 35031935 DOI: 10.1007/s11030-021-10376-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/30/2021] [Indexed: 01/13/2023]
Abstract
An important issue to discover biological structures is the design of sustainable, safe, clean, cost-effective, excellent efficient synthetic reactions, and minimal energy consumption to provide structural diversity compounds with interesting biological properties. Among five-membered nitrogen-containing heterocyclic compounds, indole-containing scaffolds are heterocyclic structures found in abundance in natural products and various synthetic compounds, which have received remarkable attention in recent years due to their therapeutic and pharmaceutical properties and valuable role in the process of drug discovery. Indoles can be synthesized by various procedures although most of these procedures have their own restrictions and drawbacks such as performing the reaction in a toxic solvent, need of transition-metal catalysts, and amount of waste solvents. Due to the medicinal importance of indole and the need for green methods of drug synthesis, this review highlights the latest green synthetic methods leading to the formation of indole-containing compounds focusing on the past 4 years with typical examples. This review is divided into two sections: green solvents and green techniques that lead to the synthesis of indole-derived scaffolds.
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Affiliation(s)
- Shima Nasri
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Mohammad Bayat
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran.
| | | | - Narges Habibi Samet
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
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9
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Yu Y, Wang Y, Li B, Tan Y, Zhao H, Li Z, Zhang C, Ma W. Ruthenium‐Catalyzed Vinylene Carbonate Annulation by C−H/N−H Functionalizations: Step‐Economical Access to Indoles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101466] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yao Yu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Yang Wang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Bo Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Yuqiang Tan
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Huan Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Zheyu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Chunran Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
| | - Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University Chengdu 610052 People's Republic of China
- State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu Sichuan 610041 People's Republic of China
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10
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Zhang H, Yang D, Zhao XF, Niu JL, Song MP. Cobalt-catalyzed C(sp3)-H bond functionalization to access indole derivatives. Org Chem Front 2022. [DOI: 10.1039/d2qo00562j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we develop an efficient method of cobalt-catalyzed C(sp3)-H bond functionalization to synthesize indole derivatives. The highlight of this protocol is accomplished by the sequential C-H activation. This “cobalt/ organic...
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11
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Deb ML, Saikia BS, Borpatra PJ, Baruah PK. Progress of metal‐free visible‐light‐driven a‐C‐H functionalization of tertiary amines: A decade journey. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100706] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Pranjal K. Baruah
- GUIST, Gauhati University Applied Sciences Gopinath Bordoloi Nagar 781014 Guwahati INDIA
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12
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Desai B, Patel M, Dholakiya BZ, Rana S, Naveen T. Recent advances in directed sp 2 C-H functionalization towards the synthesis of N-heterocycles and O-heterocycles. Chem Commun (Camb) 2021; 57:8699-8725. [PMID: 34397068 DOI: 10.1039/d1cc02176a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterocyclic compounds are widely present in the core structures of several natural products, pharmaceuticals and agrochemicals, and thus great efforts have been devoted to their synthesis in a mild and simpler way. In the past decade, remarkable progress has been made in the field of heterocycle synthesis by employing C-H functionalization as an emerging synthetic strategy. As a complement to previous protocols, transition metal catalyzed C-H functionalization of arenes using various directing groups has recently emerged as a powerful tool to create different classes of heterocycles. This review is mainly focussed on the recent key progress made in the field of the synthesis of N,O-heterocycles from olefins and allenes by using nitrogen based and oxidizing directing groups.
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Affiliation(s)
- Bhargav Desai
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
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13
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Patel M, Desai B, Ramani A, Dholakiya BZ, Naveen T. Recent Developments in the Palladium‐Catalyzed/Norbornene‐Mediated Synthesis of Carbo‐ and Heterocycles. ChemistrySelect 2021. [DOI: 10.1002/slct.202102641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Monak Patel
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat Gujarat 395 007 India
| | - Bhargav Desai
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat Gujarat 395 007 India
| | - Arti Ramani
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat Gujarat 395 007 India
| | - Bharatkumar Z. Dholakiya
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat Gujarat 395 007 India
| | - Togati Naveen
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat Gujarat 395 007 India
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14
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Facile synthesis of coumaronochromones through palladium-catalyzed intramolecular cross dehydrogenative coupling. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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15
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16
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Deb ML, Saikia BS, Borpatra PJ, Baruah PK. α-C–H functionalization of tertiary amines catalyzed/promoted by molecular iodine/derivatives. NEW J CHEM 2021. [DOI: 10.1039/d1nj02695j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A recent review on the α-C–H functionalization of tertiary amines using low-cost and benign I2 or its derivatives.
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Affiliation(s)
- Mohit L. Deb
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - B. Shriya Saikia
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - Paran J. Borpatra
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - Pranjal K. Baruah
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
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17
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Zhao JG, Wang DH. β-Selective Cu(II)-Catalyzed Dehydrogenative Enamination of Alkylbenzenes. Org Lett 2020; 22:9473-9477. [PMID: 33237776 DOI: 10.1021/acs.orglett.0c03430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A Cu(II)-catalyzed dehydrogenative enamination that couples alkyl-substituted electron-rich arenes and N-fluorobenzenesulfonimide to forge enamine products is reported. This C-N bond-forming procedure occurs selectively at the β-position of the alkyl group. Both aniline and anisole derivatives are tolerated under these conditions, to afford styryl amines. A reaction mechanism involving quinone methide and styrene intermediates is proposed.
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Affiliation(s)
- Jian-Guo Zhao
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences (CAS), 345 Lingling Rd., Shanghai 200032, China
| | - Dong-Hui Wang
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences (CAS), 345 Lingling Rd., Shanghai 200032, China.,School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Rd., Nanjing 210023, People's Republic of China
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18
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“Inorganic Polymer Flocculation Catalyst”—Polyaluminum chloride as highly efficient and green catalyst for the Friedel-crafts alkylation of bis(indolyl)methanes. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2020.106136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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19
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FeCl3 catalyzed intermolecular reaction between enol ethers and anilines: Access to 2,3-substituted indoles through aryl group migration. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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20
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Santos AS, Martins MM, Mortinho AC, Silva AM, Marques MMB. Exploring the reactivity of halogen-free aminopyridines in one-pot palladium-catalyzed C–N cross-coupling/C–H functionalization. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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21
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Choi S, Oh H, Sim J, Yu E, Shin S, Park CM. Metal-Free Synthesis of Indolopyrans and 2,3-Dihydrofurans Based on Tandem Oxidative Cycloaddition. Org Lett 2020; 22:5528-5534. [PMID: 32628496 DOI: 10.1021/acs.orglett.0c01896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis of versatile scaffold indolopyrans based on C-C radical-radical cross-coupling under metal-free conditions is described. The reaction involving single electron transfer between coupling partners followed by cage collapse allows highly selective cross-coupling while employing only equimolar amounts of coupling partners. Moreover, the mechanistic manifold was expanded for the functionalization of enamines to give the stereoselective synthesis of 2,3-dihydrofurans. This iodine-mediated oxidative coupling features mild conditions and fast reaction kinetics.
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Affiliation(s)
- Subin Choi
- Department of Chemistry, UNIST (Ulsan National Institute of Science & Technology), Ulsan 44919, Korea
| | - Hyeonji Oh
- Department of Chemistry, UNIST (Ulsan National Institute of Science & Technology), Ulsan 44919, Korea
| | - Jeongwoo Sim
- Department of Chemistry, UNIST (Ulsan National Institute of Science & Technology), Ulsan 44919, Korea
| | - Eunsoo Yu
- Department of Chemistry, UNIST (Ulsan National Institute of Science & Technology), Ulsan 44919, Korea
| | - Seunghoon Shin
- Department of Chemistry, Hanyang University, Seoul 04763, Korea
| | - Cheol-Min Park
- Department of Chemistry, UNIST (Ulsan National Institute of Science & Technology), Ulsan 44919, Korea
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22
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Hu K, Zhang Y, Zhou Z, Yang Y, Zha Z, Wang Z. Iodine-Mediated Electrochemical C(sp2)–H Amination: Switchable Synthesis of Indolines and Indoles. Org Lett 2020; 22:5773-5777. [DOI: 10.1021/acs.orglett.0c01821] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kangfei Hu
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Yan Zhang
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zhenghong Zhou
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Yu Yang
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zhenggen Zha
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Science at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Science, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
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23
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Lu YJ, Zhang X, Malakar S, Krogh-Jespersen K, Hasanayn F, Goldman AS. Formation of Enamines via Catalytic Dehydrogenation by Pincer-Iridium Complexes. J Org Chem 2020; 85:3020-3028. [PMID: 31990556 DOI: 10.1021/acs.joc.9b02846] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Di-isopropylphosphino-substituted pincer-ligated iridium catalysts are found to be significantly more effective for the dehydrogenation of simple tertiary amines to give enamines than the previously reported di-t-butylphosphino-substituted species. It is also found that the di-isopropylphosphino-substituted complexes catalyze dehydrogenation of several β-functionalized tertiary amines to give the corresponding 1,2-difunctionalized olefins. The di-t-butylphosphino-substituted species are ineffective for such substrates; presumably, the marked difference is attributable to the lesser crowding of the di-isopropylphosphino-substituted catalysts. Experimentally determined kinetic isotope effects in conjunction with DFT-based analysis support a dehydrogenation mechanism involving initial pre-equilibrium oxidative addition of the amine α-C-H bond followed by rate-determining elimination of the β-C-H bond.
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Affiliation(s)
- Yansong J Lu
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Xiawei Zhang
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Santanu Malakar
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Karsten Krogh-Jespersen
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Faraj Hasanayn
- Department of Chemistry, American University of Beirut, Beirut 1107 2020, Lebanon
| | - Alan S Goldman
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey, New Brunswick, New Jersey 08903, United States
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24
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Jiang TS, Dai L, Zhou Y, Zhang X. Palladium-catalyzed tandem oxidative annulation of α-amino ketones leading to 2-aroylindoles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Jayakumar J, Vedarethinam G, Hsiao H, Sun S, Chuang S. Cascade One‐Pot Synthesis of Orange‐Red‐Fluorescent Polycyclic Cinnolino[2,3‐
f
]phenanthridin‐9‐ium Salts by Palladium(II)‐Catalyzed C−H Bond Activation of 2‐Azobiaryl Compounds and Alkenes. Angew Chem Int Ed Engl 2020; 59:689-694. [DOI: 10.1002/anie.201910959] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Indexed: 12/24/2022]
Affiliation(s)
| | | | - Huan‐Chang Hsiao
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Shang‐You Sun
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Shih‐Ching Chuang
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
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26
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Intrieri D, Carminati DM, Zardi P, Damiano C, Manca G, Gallo E, Mealli C. Indoles from Alkynes and Aryl Azides: Scope and Theoretical Assessment of Ruthenium Porphyrin-Catalyzed Reactions. Chemistry 2019; 25:16591-16605. [PMID: 31626355 DOI: 10.1002/chem.201904224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Indexed: 01/24/2023]
Abstract
A symbiotic experimental/computational study analyzed the Ru(TPP)(NAr)2 -catalyzed one-pot formation of indoles from alkynes and aryl azides. Thirty different C3 -substituted indoles were synthesized and the best performance, in term of yields and regioselectivities, was observed when reacting ArC≡CH alkynes with 3,5-(EWG)2 C6 H3 N3 azides, whereas the reaction was less efficient when using electron-rich aryl azides. A DFT analysis describes the reaction mechanism in terms of the energy costs and orbital/electronic evolutions; the limited reactivity of electron-rich azides was also justified. In summary, PhC≡CH alkyne interacts with one NAr imido ligand of Ru(TPP)(NAr)2 to give a residually dangling C(Ph) group, which, by coupling with a C(H) unit of the N-aryl substituent, forms a 5+6 bicyclic molecule. In the process, two subsequent spin changes allow inverting the conformation of the sp2 C(Ph) atom and its consequent electrophilic-like attack to the aromatic ring. The bicycle isomerizes to indole via a two-step outer sphere H-migration. Eventually, a 'Ru(TPP)(NAr)' mono-imido active catalyst is reformed after each azide/alkyne reaction.
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Affiliation(s)
- Daniela Intrieri
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Daniela Maria Carminati
- Department of Chemistry, University of Rochester, 416 Hutchison Hall, New York, NY, 14627-0216, USA
| | - Paolo Zardi
- Department of Chemical Sciences, University of Padua, Via F. Marzolo 1, 35131, Padua, Italy
| | - Caterina Damiano
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Gabriele Manca
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Emma Gallo
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Carlo Mealli
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
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27
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Rastogi GK, Deka B, Deb ML, Baruah PK. Diastereoselective sp3-C-H Functionalization of Arylmethyl Ketones and Transformation of E
- to Z
-Products Through Photocatalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901415] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Gaurav K. Rastogi
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
- Department of Applied Organic Chemistry; CSIR-NEIST; -785006 Jorhat Assam India
| | - Bhaskar Deka
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
| | - Mohit L. Deb
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
| | - Pranjal K. Baruah
- Department of Applied Sciences, GUIST; Gauhati University; -781014 Guwahati Assam India
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28
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Jayakumar J, Vedarethinam G, Hsiao H, Sun S, Chuang S. Cascade One‐Pot Synthesis of Orange‐Red‐Fluorescent Polycyclic Cinnolino[2,3‐
f
]phenanthridin‐9‐ium Salts by Palladium(II)‐Catalyzed C−H Bond Activation of 2‐Azobiaryl Compounds and Alkenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910959] [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)
| | | | - Huan‐Chang Hsiao
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Shang‐You Sun
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Shih‐Ching Chuang
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
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29
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Kim K, Kim HY, Oh K. Aerobic Oxidation Approaches to Indole-3-carboxylates: A Tandem Cross Coupling of Amines–Intramolecular Mannich–Oxidation Sequence. Org Lett 2019; 21:6731-6735. [DOI: 10.1021/acs.orglett.9b02348] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kyeongha Kim
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Hun Young Kim
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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30
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Dwivedi V, Kalsi D, Sundararaju B. Electrochemical‐/Photoredox Aspects of Transition Metal‐Catalyzed Directed C−H Bond Activation. ChemCatChem 2019. [DOI: 10.1002/cctc.201900680] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vikas Dwivedi
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur Uttar Pradesh 208 016 India
| | - Deepti Kalsi
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur Uttar Pradesh 208 016 India
| | - Basker Sundararaju
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur Uttar Pradesh 208 016 India
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31
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Romero AH. Fused Heteroaromatic Rings via Metal-Mediated/Catalyzed Intramolecular C–H Activation: A Comprehensive Review. Top Curr Chem (Cham) 2019; 377:21. [DOI: 10.1007/s41061-019-0246-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 06/22/2019] [Indexed: 12/22/2022]
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32
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Mao J, Wang Z, Xu X, Liu G, Jiang R, Guan H, Zheng Z, Walsh PJ. Synthesis of Indoles through Domino Reactions of 2‐Fluorotoluenes and Nitriles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904658] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jianyou Mao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Zhiting Wang
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Xinyu Xu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Guoqing Liu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Runsheng Jiang
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Haixing Guan
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Zhipeng Zheng
- Roy and Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
| | - Patrick J. Walsh
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
- Roy and Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
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33
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Mao J, Wang Z, Xu X, Liu G, Jiang R, Guan H, Zheng Z, Walsh PJ. Synthesis of Indoles through Domino Reactions of 2-Fluorotoluenes and Nitriles. Angew Chem Int Ed Engl 2019; 58:11033-11038. [PMID: 31062472 DOI: 10.1002/anie.201904658] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Indexed: 12/30/2022]
Abstract
Indoles are essential heterocycles in medicinal chemistry, and therefore, novel and efficient approaches to their synthesis are in high demand. Among indoles, 2-aryl indoles have been described as privileged scaffolds. Advanced herein is a straightforward, practical, and transition-metal-free assembly of 2-aryl indoles. Simply combining readily available 2-fluorotoluenes, nitriles, LiN(SiMe3 )2 , and CsF enables the generation of a diverse array of indoles (38 examples, 48-92 % yield). A range of substituents can be introduced into each position of the indole backbone (C4 to C7, and aryl groups at C2), providing handles for further elaboration.
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Affiliation(s)
- Jianyou Mao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhiting Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Xinyu Xu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Guoqing Liu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Runsheng Jiang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Haixing Guan
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhipeng Zheng
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA
| | - Patrick J Walsh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.,Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA
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34
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Wei H, Zhou S, Qiu L, Qian Y, Hu W, Xu X. Gold‐Catalyzed Dual Annulation of Homopropargyl Alcohols with Nitrones: Synthesis of Tetrahydropyrano[4,3‐
b
]indole Scaffolds. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900426] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hanlin Wei
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Su Zhou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
| | - Lihua Qiu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Yu Qian
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
| | - Xinfang Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
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35
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Cao Z, Zhu JB, Wang L, Liao S, Tang Y. A Synthesis of Multifunctionalized Indoles from [3 + 2] Annulation of 2-Bromocyclopropenes with Anilines. Org Lett 2019; 21:4097-4100. [DOI: 10.1021/acs.orglett.9b01276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhu Cao
- College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou, Fujian 350108, China
| | - Jian-Bo Zhu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Lijia Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Saihu Liao
- College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou, Fujian 350108, China
| | - Yong Tang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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36
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Zhang L, Chen J, Chen J, Jin L, Zheng X, Jiang X, Yu C. Synthesis of 2-substituted indoles by iridium (III)-catalyzed C H functionalization of N-phenylpyridin-2-amines. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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37
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Su J, Zhang K, Zhuang M, Ma F, Zhang W, Sun H, Zhang G, Jian Y, Gao Z. One‐Pot Synthesis of Indoles from Aniline and α,β‐Ynones through an Iodine‐Mediated Transition‐Metal‐Free Tandem
aza
‐Michael addition/C−H Functionalization. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jie Su
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Kan Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Mengyuan Zhuang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Fuyu Ma
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Wei‐Qiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Yajun Jian
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, MOESchool of Chemistry and Chemical EngineeringShaanxi Normal University No. 620, West Chang'an Avenue, Chang'an District Xi'an P.R.China 710119
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38
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Borpatra PJ, Rastogi GK, Saikia MB, Deb ML, Baruah PK. Multi‐Component Reaction of 6‐Aminouracils, Aldehydes and Secondary Amines: Conversion of the Products into Pyrimido[4,5‐
d
]pyrimidines through C‐H Amination/Cyclization. ChemistrySelect 2019. [DOI: 10.1002/slct.201900210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Paran J. Borpatra
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
| | - Gaurav K. Rastogi
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
- Applied Organic Chemistry, CSIR-NEIST Jorhat- 785006 Assam
| | - Ms. B‐S. Saikia
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
| | - Mohit L. Deb
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
| | - Pranjal K. Baruah
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
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39
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Bellezza D, Noverges B, Fasano F, Sarmiento JT, Medio-Simón M, Asensio G. Palladium-Catalyzed C-C Ring Closure in α-Chloromethylimines: Synthesis of 1H
-Indoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Delia Bellezza
- Department of Organic Chemistry; University of Valencia; Ave Vicent Andrés Estellés s/n Spain
| | - Bárbara Noverges
- Department of Organic Chemistry; University of Valencia; Ave Vicent Andrés Estellés s/n Spain
| | - Francesco Fasano
- Department of Organic Chemistry; University of Valencia; Ave Vicent Andrés Estellés s/n Spain
| | - Jeymy T. Sarmiento
- Department of Organic Chemistry; University of Valencia; Ave Vicent Andrés Estellés s/n Spain
| | - Mercedes Medio-Simón
- Department of Organic Chemistry; University of Valencia; Ave Vicent Andrés Estellés s/n Spain
| | - Gregorio Asensio
- Department of Organic Chemistry; University of Valencia; Ave Vicent Andrés Estellés s/n Spain
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40
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Ren L, Nan G, Wang Y, Xiao Z. Carboxylic Acid-Promoted Single-Step Indole Construction from Simple Anilines and Ketones via Aerobic Cross-Dehydrogenative Coupling. J Org Chem 2018; 83:14472-14488. [PMID: 30378428 DOI: 10.1021/acs.joc.8b02180] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The cross-dehydrogenative coupling (CDC) reaction is an efficient strategy for indole synthesis. However, most CDC methods require special substrates, and the presence of inherent groups limits the versatility for further transformation. A carboxylic acid-promoted aerobic catalytic system is developed herein for a single-step synthesis of indoles from simple anilines and ketones. This versatile system is featured by the broad substrate scope and the use of ambient oxygen as an oxidant and is convenient and economical for both laboratory and industry applications. The existence of the labile hydrogen at C-3 and the highly transformable carbonyl at C-2 makes the indoles versatile building blocks for organic synthesis in different contexts. Computational studies based on the density functional theory (DFT) suggest that the rate-determining step is carboxylic acid-assisted condensation of the substrates, rather than the functionalization of aryl C-H. Accordingly, a pathway via imine intermediates is deemed to be the preferred mechanism. In contrast to the general deduction, the in situ formed imine, instead of its enamine isomer, is believed to be involved in the first ligand exchange and later carbopalladation of the α-Me, which shed new light on this indolization mechanism.
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Affiliation(s)
- Long Ren
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
| | - Guanglei Nan
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
| | - Yongcheng Wang
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
| | - Zhiyan Xiao
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
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41
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Abstract
Indole is the most frequently found heterocyclic core structures in pharmaceuticals, natural products, agrochemicals, dyes and fragrances. For about 150 years, chemists were absorbed in finding new and easier synthetic strategies to build this nucleus. Many books and reviews have been written, but the number of new syntheses that appear in the literature, make necessary continuous updates. This reviews aims to give a comprehensive overview on indole synthesis catalyzed by transition metals appeared in the literature in the years 2016 and 2017.
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42
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Hermann GN, Unruh MT, Jung S, Krings M, Bolm C. Mechanochemical Rhodium(III)‐ and Gold(I)‐Catalyzed C−H Bond Alkynylations of Indoles under Solventless Conditions in Mixer Mills. Angew Chem Int Ed Engl 2018; 57:10723-10727. [DOI: 10.1002/anie.201805778] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Gary N. Hermann
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Marvin T. Unruh
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Se‐Hyeong Jung
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Maik Krings
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
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43
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Hermann GN, Unruh MT, Jung S, Krings M, Bolm C. Mechanochemical Rhodium(III)‐ and Gold(I)‐Catalyzed C−H Bond Alkynylations of Indoles under Solventless Conditions in Mixer Mills. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805778] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Gary N. Hermann
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Marvin T. Unruh
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Se‐Hyeong Jung
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Maik Krings
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
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44
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Jie L, Wang L, Xiong D, Yang Z, Zhao D, Cui X. Synthesis of 2-Arylindoles through Pd(II)-Catalyzed Cyclization of Anilines with Vinyl Azides. J Org Chem 2018; 83:10974-10984. [DOI: 10.1021/acs.joc.8b01618] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lianghua Jie
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Lianhui Wang
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Dan Xiong
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Zi Yang
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Di Zhao
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Xiuling Cui
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
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Li Y, Peng J, Chen X, Mo B, Li X, Sun P, Chen C. Copper-Catalyzed Synthesis of Multisubstituted Indoles through Tandem Ullmann-Type C-N Formation and Cross-dehydrogenative Coupling Reactions. J Org Chem 2018; 83:5288-5294. [PMID: 29664297 DOI: 10.1021/acs.joc.8b00353] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Multisubstituted indoles were synthesized via a one-pot tandem copper-catalyzed Ullmann-type C-N bond formation/intramolecular cross-dehydrogenative coupling process at 130 °C in DMSO. The methodology allows practical and modular assembly of indoles in good to excellent yields from readily available aryl iodides and enamines.
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Affiliation(s)
- Yue Li
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
| | - Jinsong Peng
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
| | - Xin Chen
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
| | - Baichuan Mo
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
| | - Xue Li
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
| | - Peng Sun
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
| | - Chunxia Chen
- Department of Chemistry and Chemical Engineering, College of Science , Northeast Forestry University , Harbin 150040 , P. R. China
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Deb ML, Saikia BS, Rastogi GK, Baruah PK. Oxidative Coupling of Naphthols to Ketones: An Approach to 1,2-Diketones. ChemistrySelect 2018. [DOI: 10.1002/slct.201702831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mohit L. Deb
- Department of Applied Sciences; GUIST; Gauhati University; Guwahati-781014, Assam India
| | - B-Shriya Saikia
- Department of Applied Sciences; GUIST; Gauhati University; Guwahati-781014, Assam India
| | - Gaurav K. Rastogi
- Department of Applied Sciences; GUIST; Gauhati University; Guwahati-781014, Assam India
- Applied Organic Chemistry; CSIR-NEIST; Jorhat-785006 Assam
| | - Pranjal K. Baruah
- Department of Applied Sciences; GUIST; Gauhati University; Guwahati-781014, Assam India
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Saranya S, Ramesh R, Grzegorz Małecki J. One-Pot Catalytic Approach for the Selective Aerobic Synthesis of Imines from Alcohols and Amines Using Efficient Arene Diruthenium(II) Catalysts under Mild Conditions. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701408] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sundar Saranya
- Centre for Organometallic Chemistry; School of Chemistry; Bharathidasan University; 620024 Tiruchirappalli Tamil Nadu India
| | - Rengan Ramesh
- Centre for Organometallic Chemistry; School of Chemistry; Bharathidasan University; 620024 Tiruchirappalli Tamil Nadu India
| | - Jan Grzegorz Małecki
- Department of Crystallography; Institute of Chemistry; University of Silesia; 40-006 Katowice Poland
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Lin W, Zheng YX, Xun Z, Huang ZB, Shi DQ. Microwave-Assisted Regioselective Synthesis of 3-Functionalized Indole Derivatives via Three-Component Domino Reaction. ACS COMBINATORIAL SCIENCE 2017; 19:708-713. [PMID: 28985045 DOI: 10.1021/acscombsci.7b00126] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A microwave-assisted regioselective synthesis of 3-functionalized indole derivatives via a three-component domino reaction of anilines, arylglyoxal monohydrates, and cyclic 1,3-dicarbonyl compounds is described. The main advantages of this protocol are short reaction times, practical simplicity, its metal-free nature, the availability of starting materials, green solvents, and high regioselectivity.
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Affiliation(s)
- Wei Lin
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
- School
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| | - Yong-Xiang Zheng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Zhan Xun
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Zhi-Bin Huang
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Da-Qing Shi
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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Metal-Free Synthesis of Indoles from Arylhydrazines and Nitroalkenes at Room Temperature. ChemistrySelect 2017. [DOI: 10.1002/slct.201701964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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