1
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Metal-Catalyzed Cascade Reactions between Alkynoic Acids and Dinucleophiles: A Review. Catalysts 2023. [DOI: 10.3390/catal13030495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Cascade reactions provide a straightforward access to many valuable compounds and reduce considerably the number of steps of a synthetic sequence. Among the domino and multicomponent processes that involve alkynes, the cascade reaction between alkynoic acids and C-, N-, O- and S-aminonucleophiles stands out as a particularly powerful tool for the one-pot construction of libraries of nitrogen-containing heterocyclic compounds with scaffold diversity and molecular complexity. This reaction, based on an initial metal-catalyzed cycloisomerization that generates an alkylidene lactone intermediate, was originally catalyzed by gold(I) catalysts, along with silver salts or Brönsted acid additives, but other alternative metal catalysts have emerged in the last decade as well as different reaction media. This review examines the existing literature on the topic of metal-catalyzed cascade reactions of acetylenic acids and dinucleophiles and discusses aspects concerning substrate/catalyst ratio for every catalyst system, nature of the aminonucleophile involved and substrate scope. In addition, alternative solvents are also considered, and an insight into the pathway of the reaction and possible intermediates is also provided.
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2
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Metal-Free Aerobic C-N Bond Formation of Styrene and Arylamines via Photoactivated Electron Donor-Acceptor Complexation. Molecules 2023; 28:molecules28010356. [PMID: 36615548 PMCID: PMC9822123 DOI: 10.3390/molecules28010356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/25/2022] [Accepted: 12/25/2022] [Indexed: 01/03/2023] Open
Abstract
This study processes a facile and green approach for the Markovnikov-selective hydroamination of styrene with naphthylamine through irradiation with UV LED light (365 nm) via an electron donor-acceptor complexation between naphthylamines and oxygen in situ. This protocol showcases the synthetic potential for aerobic C-N bond formation without using a metal catalyst and photosensitizer. Three naphthylamines were examined and afforded desired C-N bond formation product in moderate yield.
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3
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Medici F, Montinari F, Donato E, Raimondi L, Benaglia M. A convenient protocol for a zinc-catalysed synthesis of electron-poor indoles. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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4
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Álvarez-Constantino A, Álvarez-Pérez A, Varela JA, Sciortino G, Ujaque G, Saá C. Chemoselective Ru-Catalyzed Oxidative Lactamization vs Hydroamination of Alkynylamines: Insights from Experimental and Density Functional Theory Studies. J Org Chem 2022; 88:1185-1193. [PMID: 36579612 PMCID: PMC9872091 DOI: 10.1021/acs.joc.2c02770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The Ru-catalyzed intramolecular oxidative amidation (lactamization) of aromatic alkynylamines with 4-picoline N-oxide as an external oxidant has been developed. This chemoselective process is very efficient to achieve medium-sized ε- and ζ-lactams (seven- and eight-membered rings) but not for the formation of common δ-lactams (six-membered rings). DFT studies unveiled the capital role of the chain length between the amine and the alkyne functionalities: the longer the connector, the more favored the lactamization process vs hydroamination.
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Affiliation(s)
- Andrés
M. Álvarez-Constantino
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Andrea Álvarez-Pérez
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Jesús A. Varela
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Giuseppe Sciortino
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain,
| | - Gregori Ujaque
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain,
| | - Carlos Saá
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain,
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5
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Zhang Z, Fu B, Wang X, Hu Z, Liu X, Wang T, Zhao J. Synthesis of ( Z)-β-Chloro-enamides via a Base-Promoted trans-Hydroamidation of Alkynyl Chlorides Using 1,1-Dichloroalkenes as Precursor. J Org Chem 2022; 87:8764-8772. [PMID: 35686467 DOI: 10.1021/acs.joc.2c00581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient and general base-promoted reaction of 1,1-dichloroalkenes with secondary sulfonamides and amides for the synthesis of (Z)-β-chloro-enamides has been described. This reaction exhibits functional group tolerance under simple and mild conditions. Mechanistic study indicated that a stereoselective trans-hydroamidation of alkynyl chlorides generated in situ from 1,1-dichloroalkenes was the key step.
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Affiliation(s)
- Zhenming Zhang
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Bei Fu
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Xiaoshuo Wang
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Zhipeng Hu
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Xuanling Liu
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Tao Wang
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Junfeng Zhao
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.,Key Laboratory of Molecular Target & Clinical Pharmacology and the NMPA & State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
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6
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Bai X, Huang L, Zhou P, Xi H, Hu J, Zuo Z, Feng H. Selectivity Controlled Hydroamination of Alkynes to Sulfonyl Fluoride Hubs: Development and Application. J Org Chem 2022; 87:4998-5004. [PMID: 35316042 DOI: 10.1021/acs.joc.1c03082] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A hydroamination of unactivated alkynes and lithium bis(fluorosulfonyl)imide (LiN(SO2F)2) is described under mild conditions, affording a single regioisomer of the sulfonyl fluorides. This method features broad functional group compatibility and delivers the target vinyl fluorosulfonimides in good to excellent yields. Moreover, gram-scale hydroamination of terminal and internal alkynes is achieved. Further transformations exploiting the reactivity of the vinyl fluorosulfonimide are subsequently developed for the synthesis of fluorosulfates and diphenyl sulfate.
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Affiliation(s)
- Xueying Bai
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Liliang Huang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Pengyu Zhou
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Hui Xi
- Key Laboratory of Tobacco Flavor Basic Research of CNTC, Zhengzhou Tobacco Research, Zhengzhou 450001, China
| | - Junduo Hu
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Zhicheng Zuo
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Huangdi Feng
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.,Shanghai Frontiers Science Research Center for Druggability of Cardiovascular Noncoding RNA, Institute for Frontier Medical Technology, Shanghai University of Engineering Science, Shanghai 201620, China
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7
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Palladium-Catalyzed Domino Cycloisomerization/Double Condensation of Acetylenic Acids with Dinucleophiles. Catalysts 2022. [DOI: 10.3390/catal12020127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Metal-catalyzed cascade processes based on hydrofunctionalization of alkynes are receiving much more attention because of their potential to provide advantageous approaches to otherwise synthetically challenging compounds. An alternative catalyst system has been found for the domino cycloisomerization/cyclocondensation reaction involving acetylenic acids and heterodinucleophiles. A CNN pincer palladium(II) complex, acting as a homogeneous catalyst, provides the corresponding polyheterocycles with a higher substrate/catalyst ratio. Other palladium sources were also tested and discarded, and a number of mechanistic studies including poisoning assays, kinetic plots, TEM images, XRD spectra and UPLC-MS analysis of reaction intermediates were conducted in order to shed light on the role of this pincer catalyst and the catalytic cycle involved in the cascade reaction. As a result, a more nuanced mechanism is tentatively proposed.
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8
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Festa A, Raspertov P, Voskressensky L. 2‐(Alkynyl)anilines and derivatives – versatile reagents for heterocyclic synthesis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexey Festa
- Peoples' Friendship University of Russia RUSSIAN FEDERATION
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9
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Chvojka T, Markos A, Voltrová S, Pohl R, Beier P. Ligand-dependent stereoselective Suzuki-Miyaura cross-coupling reactions of β-enamido triflates. Beilstein J Org Chem 2021; 17:2657-2662. [PMID: 34795803 PMCID: PMC8561141 DOI: 10.3762/bjoc.17.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/22/2021] [Indexed: 11/23/2022] Open
Abstract
The stereoselective Suzuki–Miyaura cross-coupling of (Z)-β-enamido triflates is demonstrated. Depending on the nature of the ligand in the palladium catalyst, either retention or inversion of the configuration during the synthesis of β,β-diaryl-substituted enamides is observed. Thus, the method provides synthetic access to both isomers of the target enamides from (Z)-β-enamido triflates.
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Affiliation(s)
- Tomáš Chvojka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Athanasios Markos
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, CZ-128 43 Prague 2, Czech Republic
| | - Svatava Voltrová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Petr Beier
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic
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10
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Zhao Z, Tian Q, Chen Y, Wen S, Zhang Y, Cheng G. Base-Promoted Stereoselective Hydrogenation of Ynamides with Sulfonyl Hydrazide to Give Z-Enamides. J Org Chem 2021; 86:10407-10413. [PMID: 34314182 DOI: 10.1021/acs.joc.1c01085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A base-mediated semihydrogenation of ynamides using p-toluenesulfonyl hydrazide as an inexpensive and easy-to-handle hydrogen donor is reported. This transition-metal-free protocol avoids overhydrogenation and reduction of other functional groups, generating the thermodynamically unfavorable Z-enamides exclusively.
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Affiliation(s)
- Zemin Zhao
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, the Instrumental Analysis Center, Huaqiao University, Xiamen, Fujian 361021, China
| | - Qingyu Tian
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, the Instrumental Analysis Center, Huaqiao University, Xiamen, Fujian 361021, China
| | - Yanhui Chen
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, the Instrumental Analysis Center, Huaqiao University, Xiamen, Fujian 361021, China
| | - Si Wen
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, the Instrumental Analysis Center, Huaqiao University, Xiamen, Fujian 361021, China
| | - Yuqing Zhang
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, the Instrumental Analysis Center, Huaqiao University, Xiamen, Fujian 361021, China
| | - Guolin Cheng
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, the Instrumental Analysis Center, Huaqiao University, Xiamen, Fujian 361021, China
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11
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Saito A. Metal-Free Synthesis of Heterocycles via Activation of Alkynes by Hypervalent Iodine. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akio Saito
- Department of Applied Chemistry, Tokyo University of Agriculture and Technology
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12
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Lyu X, Zhang J, Kim D, Seo S, Chang S. Merging NiH Catalysis and Inner-Sphere Metal-Nitrenoid Transfer for Hydroamidation of Alkynes. J Am Chem Soc 2021; 143:5867-5877. [DOI: 10.1021/jacs.1c01138] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xiang Lyu
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Jianbo Zhang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Sangwon Seo
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
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13
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Jiang M, Liu D, Cai M. Heterogeneous gold(I)-catalyzed hydroamination of allenamides with arylamines toward allylamino E-enamides. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1902535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Minhua Jiang
- School of New Energy Science and Engineering, Xinyu University, Xinyu, China
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Dayi Liu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Mingzhong Cai
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang, China
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14
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Zhu G, Zhang G. Access to benzo-fused aza[7]helicene via unexpected indolization of alkyne-amine. Org Chem Front 2021. [DOI: 10.1039/d1qo00885d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient base-mediated indolization of alkyne-amine for the synthesis of quinolone-fused indole was developed and further applied to synthesize di- and triaza[7]helicenes bearing two and three pentagons, respectively.
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Affiliation(s)
- Guanxing Zhu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Gang Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
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15
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Qin Y, Zhuang W, Guo X, Zhang X, Huang Q. Rhodium-catalyzed direct C H amination of 2-arylindoles and 7-arylindoles with free amines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Garkhedkar AM, Gore BS, Hu WP, Wang JJ. Lewis Acid Catalyzed Atom-Economic Synthesis of C2-Substituted Indoles from o-Amido Alkynols. Org Lett 2020; 22:3531-3536. [PMID: 32275448 DOI: 10.1021/acs.orglett.0c00971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein we have disclosed a Zn(OTf)2 catalyzed synthesis of C2-alkyl substituted indole derivatives via unprecedented carbonyl group migration from o-amido alkynols. The key features of this protocol involve N,O-carbonyl group migration, broad substrate scope with varied functionality tolerance, moderate to good yields, and 100% atom economy. The crossover experiments proved that the migration is happening via an intramolecular pathway.
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Affiliation(s)
- Amol Milind Garkhedkar
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Babasaheb Sopan Gore
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Wan-Ping Hu
- Department of Biotechnology, Kaohsiung Medical University, No. 100 Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, No. 100 Tzyou First Road, Sanmin District, Kaohsiung City 807, Taiwan
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17
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Hou Z, Xu H. Electrochemically Enabled Intramolecular Aminooxygenation of Alkynes
via
Amidyl Radical Cyclization. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900500] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhong‐Wei Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen Fujian 361005 China
| | - Hai‐Chao Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen Fujian 361005 China
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18
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Bo Z, Ji-Jun Z, Sheng H, Dong-Huai T, Jiang-Wei L, Wei Z, Jian L. Base-catalyzed stereoselective hydrophenoxylation and hydrothiolation of hexafluorobutyne. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Cai X, Yang M, Guo H. Tertiary Enamides: Versatile and Available Substrates in Synthetic Chemistry. Curr Org Synth 2020; 16:70-97. [PMID: 31965923 DOI: 10.2174/1570179415666181107122814] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 09/29/2018] [Accepted: 10/03/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Enamines and their variant enamides as powerful and versatile synthons have attracted great attention in synthetic chemistry. Enamides display unique stability and reduce enaminic reactivity in view of the electron-withdrawing effect of N-acyl group. A great deal of satisfactory achievements in the synthesis and application of enamides has been made in recent years. Especially, tertiary enamides without N-H bond regarded as low reactivity of compounds in the past can act as excellent nucleophiles to react with electrophiles for the construction of various nitrous molecules. OBJECTIVE This review focuses on recent advances on tertiary enamides in the synthetic strategies and applications including addition, coupling reaction, functionalization and electro- or photo-chemical reaction. CONCLUSION Tertiary enamides as electron-deficient nucleophiles display a satisfactory balance between stability and reactivity to offer multiple opportunities for the construction of various functionalized nitrogencontaining compounds. Further exploration of the reactive mechanisms involved tertiary enamides and the development of novel and efficient transformations to generate ever more complex building blocks starting from tertiary enamides are particularly worth pursuing.
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Affiliation(s)
- Xiaohua Cai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Mengzhi Yang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Hui Guo
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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20
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Neto JSS, Zeni G. Synthesis of indoles from alkynes and a nitrogen source under metal-free conditions. Org Biomol Chem 2020; 18:4906-4915. [DOI: 10.1039/d0ob00670j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review deals with the methodologies published in the last ten years, which used metal-free conditions to prepare indoles starting from alkynes and nitrogen compounds.
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Affiliation(s)
- Jose S. S. Neto
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Gilson Zeni
- Laboratorio de Sintese
- Reatividade
- Avaliaçao Farmacologica e Toxicologica de Organocalcogenios
- CCNE
- UFSM
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21
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Lin L, Zeng X, Xu B. Synthesis of Z-Enamides through Heterogeneous Gold-Catalyzed Stereoselective Hydrogenation of Ynamides. J Org Chem 2019; 84:11240-11246. [PMID: 31385517 DOI: 10.1021/acs.joc.9b01450] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A facile synthesis of Z-enamides via heterogeneous Au/TiO2 catalyzed stereoselective hydrogenation of ynamides has been developed. Easy to handle and inexpensive ammonium formate was used as the hydrogen source, and Z-enamides were formed in a highly stereoselective manner. The commercially available gold nanoparticle catalyst could be recycled multiple times without a significant loss of activity.
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Affiliation(s)
- Long Lin
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China
| | - Xiaojun Zeng
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China
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22
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Xu C, Feng Y, Li F, Han J, He YM, Fan QH. A Synthetic Route to Chiral Benzo-Fused N-Heterocycles via Sequential Intramolecular Hydroamination and Asymmetric Hydrogenation of Anilino-Alkynes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00183] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cong Xu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yu Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Faju Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jiahong Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yan-Mei He
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, PR China
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23
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do Carmo Pinheiro R, Back DF, Zeni G. Iron(III) Chloride/Dialkyl Diselenides‐Promoted Cascade Cyclization of
ortho
‐Diynyl Benzyl Chalcogenides. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900086] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Roberto do Carmo Pinheiro
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNEUFSM Santa Maria, Rio Grande do Sul Brazil 97105-900
| | - Davi F. Back
- Laboratório de Materiais Inorgânicos, Departamento de QuímicaUFSM Santa Maria, Rio Grande do Sul Brazil 97105-900
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNEUFSM Santa Maria, Rio Grande do Sul Brazil 97105-900
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24
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Recent Advances in the Catalytic Synthesis of Imidazolidin-2-ones and Benzimidazolidin-2-ones. Catalysts 2019. [DOI: 10.3390/catal9010028] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
2-Imidazolidinone and its analogues are omnipresent structural motifs of pharmaceuticals, natural products, chiral auxiliaries, and intermediates in organic syntheses. Over the years, continuous efforts have been addressed to the development of sustainable and more efficient protocols for the synthesis of these heterocycles. This review gives a summary of the catalytic strategies to access imidazolidin-2-ones and benzimidazolidin-2-ones that have appeared in the literature from 2010 to 2018. Particularly important contributions beyond the timespan will be mentioned. The review is organized in four main chapters that identify the most common approaches to imidazolidin-2-one derivatives: (1) the direct incorporation of the carbonyl group into 1,2-diamines, (2) the diamination of olefins, (3) the intramolecular hydroamination of linear urea derivatives and (4) aziridine ring expansion. Methods not included in this classification will be addressed in the miscellaneous section.
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25
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Zidan A, Cordier M, El-Naggar AM, Abd El-Sattar NEA, Hassan MA, Ali AK, El Kaïm L. Propargylation of Ugi Amide Dianion: An Entry into Pyrrolidinone and Benzoindolizidine Alkaloid Analogues. Org Lett 2018; 20:2568-2571. [PMID: 29683331 DOI: 10.1021/acs.orglett.8b00687] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Propargylation of Ugi adducts under the addition of excess sodium hydride in DMSO leads to direct formation of pyrrolidinone enamides, which are useful precursors of iminium intermediates and may be trapped by various nucleophiles. This approach has been applied to the formation of benzoindolizidine alkaloids with high diversity via a Ugi/propargylation/Pictet-Spengler cyclization.
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Affiliation(s)
- Alaa Zidan
- Laboratoire de Synthèse Organique, CNRS , Ecole Polytechnique, ENSTA ParisTech-UMR 7652, Université Paris-Saclay , 828 Bd des Maréchaux , 91128 Palaiseau , France.,Chemistry Department, Faculty of Science , Ain Shams University , Abbasia , Cairo 11566 , Egypt
| | - Marie Cordier
- Laboratoire de Chimie Moléculaire, UMR 9168, Department of Chemistry , Ecole Polytechnique, CNRS , 91128 , Palaiseau cedex , France
| | - Abeer M El-Naggar
- Chemistry Department, Faculty of Science , Ain Shams University , Abbasia , Cairo 11566 , Egypt
| | - Nour E A Abd El-Sattar
- Chemistry Department, Faculty of Science , Ain Shams University , Abbasia , Cairo 11566 , Egypt
| | - Mohamed Ali Hassan
- Chemistry Department, Faculty of Science , Ain Shams University , Abbasia , Cairo 11566 , Egypt
| | - Ali Khalil Ali
- Chemistry Department, Faculty of Science , Ain Shams University , Abbasia , Cairo 11566 , Egypt
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique, CNRS , Ecole Polytechnique, ENSTA ParisTech-UMR 7652, Université Paris-Saclay , 828 Bd des Maréchaux , 91128 Palaiseau , France
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26
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Ma N, Li P, Wang Z, Dai Q, Hu C. Synthesis of indoles from aroyloxycarbamates with alkynes via decarboxylation/cyclization. Org Biomol Chem 2018; 16:2421-2426. [DOI: 10.1039/c8ob00086g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium-catalyzed decarboxylation/cyclization of aroyloxycarbamates with alkynes to construct C–N bonds.
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Affiliation(s)
- Nuannuan Ma
- Key Laboratory of Cluster Science of Ministry of Education
- Beijing Key Laboratory of Photoelectronic/Electrophotonic
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Peihe Li
- Key Laboratory of Cluster Science of Ministry of Education
- Beijing Key Laboratory of Photoelectronic/Electrophotonic
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Zheng Wang
- Key Laboratory of Cluster Science of Ministry of Education
- Beijing Key Laboratory of Photoelectronic/Electrophotonic
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Qipu Dai
- Key Laboratory of Cluster Science of Ministry of Education
- Beijing Key Laboratory of Photoelectronic/Electrophotonic
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Changwen Hu
- Key Laboratory of Cluster Science of Ministry of Education
- Beijing Key Laboratory of Photoelectronic/Electrophotonic
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
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27
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Takeda Y, Kajihara R, Kobayashi N, Noguchi K, Saito A. Molecular-Iodine-Catalyzed Cyclization of 2-Alkynylanilines via Iodocyclization–Protodeiodination Sequence. Org Lett 2017; 19:6744-6747. [DOI: 10.1021/acs.orglett.7b03497] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuichiro Takeda
- Division
of Applied Chemistry, Institute of Engineering, and ‡Instrumentation
Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16
Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Ryota Kajihara
- Division
of Applied Chemistry, Institute of Engineering, and ‡Instrumentation
Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16
Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Naoko Kobayashi
- Division
of Applied Chemistry, Institute of Engineering, and ‡Instrumentation
Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16
Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Keiichi Noguchi
- Division
of Applied Chemistry, Institute of Engineering, and ‡Instrumentation
Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16
Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Akio Saito
- Division
of Applied Chemistry, Institute of Engineering, and ‡Instrumentation
Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16
Naka-cho, Koganei, Tokyo 184-8588, Japan
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28
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Watanabe T, Mutoh Y, Saito S. Ruthenium-Catalyzed Cycloisomerization of 2-Alkynylanilides: Synthesis of 3-Substituted Indoles by 1,2-Carbon Migration. J Am Chem Soc 2017; 139:7749-7752. [PMID: 28539042 DOI: 10.1021/jacs.7b04564] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We developed ruthenium-catalyzed cycloisomerization of alkynylanilides that gave 3-substituted indoles in high yields. The reaction proceeded via the disubstituted vinylidene ruthenium complex that was formed by the 1,2-carbon migration.
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Affiliation(s)
- Takuma Watanabe
- Department of Chemistry, Faculty of Science, Tokyo University of Science , Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Yuichiro Mutoh
- Department of Chemistry, Faculty of Science, Tokyo University of Science , Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Shinichi Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science , Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
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29
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Mak AM, Lim YH, Jong H, Yang Y, Johannes CW, Robins EG, Sullivan MB. Mechanistic Insights and Implications of Dearomative Rearrangement in Copper-Free Sonogashira Cross-Coupling Catalyzed by Pd-Cy*Phine. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00186] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Adrian M. Mak
- Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore
| | - Yee Hwee Lim
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Howard Jong
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Yong Yang
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Charles W. Johannes
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Edward G. Robins
- Singapore Bioimaging Consortium, 11 Biopolis Way, Helios #02-02, Singapore 138667, Singapore
| | - Michael B. Sullivan
- Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore
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30
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Tang GD, Pan CL, Xie F. Ir(III)-catalyzed C-H alkynylation of arenes under chelation assistance. Org Biomol Chem 2016; 14:2898-904. [PMID: 26866401 DOI: 10.1039/c6ob00106h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An efficient and mild Ir(III)-catalyzed, chelation assisted C-H alkynylation of arenes has been developed using hypervalent iodine alkynes as alkynylating reagents. A broad scope of N-phenyl-2-aminopyridines and 2-phenoxypyridines has been established as effective substrates for this C-H functionalization and the desired alkynylated products were isolated in moderate to high yields.
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Affiliation(s)
- Guo-Dong Tang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, 232001, Anhui, China. and Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 Liaoning, China.
| | - Cheng-Ling Pan
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, 232001, Anhui, China.
| | - Fang Xie
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 Liaoning, China.
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31
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Affiliation(s)
- Ingmar Bauer
- Department Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Hans-Joachim Knölker
- Department Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
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32
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Solvent- and Transition Metal Catalyst-Dependent Regioselectivity in the [3+2] Cyclocondensation of Trifluoromethyl-α,β-ynones with Hydrazines: Switchable Access to 3- and 5-Trifluoromethylpyrazoles. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400853] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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34
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Dwivedi V, Hari Babu M, Kant R, Sridhar Reddy M. N-Substitution dependent stereoselectivity switch in palladium catalyzed hydroalkynylation of ynamides: a regio and stereoselective synthesis of ynenamides. Chem Commun (Camb) 2015; 51:14996-9. [DOI: 10.1039/c5cc06251a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A palladium catalysed regioselective hydroalkynylation of ynamides for ynenamides is achieved with an N-substitution dependent stereoselectivity switch.
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Affiliation(s)
- Vikas Dwivedi
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Madala Hari Babu
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Ruchir Kant
- Molecular & Structural Biology Division
- CSIR-CDRI
- Lucknow 226031
- India
| | - Maddi Sridhar Reddy
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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35
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36
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Xie F, Qi Z, Yu S, Li X. Rh(III)- and Ir(III)-Catalyzed C–H Alkynylation of Arenes under Chelation Assistance. J Am Chem Soc 2014; 136:4780-7. [DOI: 10.1021/ja501910e] [Citation(s) in RCA: 367] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Fang Xie
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zisong Qi
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Songjie Yu
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xingwei Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
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37
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Stein AL, Bilheri FN, Back DF, Zeni G. Iron(III) Chloride/Diorganyl Diselenides Promoted Regio- and Stereoselective Cyclization ofortho-Alkynylanilides: Synthesis of (Z)-4-(chalcogen)methylenebenzoxazines. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300925] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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38
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Zou JF, Wang H, Li L, Xu Z, Yang KF, Xu LW. Fe-catalyzed cycloaddition of indoles and o-phthalaldehyde for the synthesis of benzo[b]carbazoles with TMSCl- or acid-responsive properties. RSC Adv 2014. [DOI: 10.1039/c4ra08012b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The indolyl benzo[b]carbazoles achieved by iron catalysis via sequential carbon–carbon bond-forming reaction could be used as fluorescent sensors for TMSCl and acids.
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Affiliation(s)
- Jin-Feng Zou
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 310012, P. R. China
| | - Hu Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 310012, P. R. China
| | - Li Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 310012, P. R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 310012, P. R. China
| | - Ke-Fang Yang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 310012, P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 310012, P. R. China
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education (MOE) and School of Chemistry and Chemical Engineering
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39
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Abbiati G, Marinelli F, Rossi E, Arcadi A. Synthesis of Indole Derivatives from 2-Alkynylanilines by Means of Gold Catalysis. Isr J Chem 2013. [DOI: 10.1002/ijch.201300040] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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