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Kumar V, Maayuri R, Medhi K, Gandeepan P. Rhodium(III)-Catalyzed C-H/N-H Activation for Direct Synthesis of Pyrimidoindolones under Mild Conditions. Chem Asian J 2023; 18:e202300675. [PMID: 37616389 DOI: 10.1002/asia.202300675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 08/26/2023]
Abstract
Pyrimidoindolones are an important structural motif found in many natural products and are essential to the pharmaceutical and agrochemical industry. Direct synthesis of 3,4-unsubstituted pyrimidoindolones is not easily accessible. Here we report a rhodium(III)-catalyzed C-H/N-H activation and annulation approach for obtaining pyrimidoindolones from N-carbamoylindoles and vinylene carbonate. The reaction occurs at room temperature and does not require any external oxidants. A diverse spectrum of indoles were demonstrated to be viable substrates capable of producing the desired pyrimidoindolones in high yields. In addition, the reaction scope has been expanded to include pyrrole substrate. Furthermore, detailed mechanistic studies have been performed to delineate the working mode of the reaction.
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Affiliation(s)
- Vikash Kumar
- Parthasarathy Gandeepan, Department of Chemistry, Indian Institute of Technology Tirupati, Yerpedu - Venkatagiri Road, Yerpedu Post, Tirupati District, Andhra Pradesh, 517619, India
| | - Rajaram Maayuri
- Parthasarathy Gandeepan, Department of Chemistry, Indian Institute of Technology Tirupati, Yerpedu - Venkatagiri Road, Yerpedu Post, Tirupati District, Andhra Pradesh, 517619, India
| | - Kapil Medhi
- Parthasarathy Gandeepan, Department of Chemistry, Indian Institute of Technology Tirupati, Yerpedu - Venkatagiri Road, Yerpedu Post, Tirupati District, Andhra Pradesh, 517619, India
| | - Parthasarathy Gandeepan
- Parthasarathy Gandeepan, Department of Chemistry, Indian Institute of Technology Tirupati, Yerpedu - Venkatagiri Road, Yerpedu Post, Tirupati District, Andhra Pradesh, 517619, India
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2
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Aksenov NA, Arutiunov NA, Aksenov AV, Kirilov NK, Aksenova IV, Aksenov DA, Aleksandrova EV, Rubin M, Kornienko A. Synthesis of β-Carbolines with Electrocyclic Cyclization of 3-Nitrovinylindoles. Int J Mol Sci 2023; 24:13107. [PMID: 37685914 PMCID: PMC10487476 DOI: 10.3390/ijms241713107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/19/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
The β-carboline motif is common in drug discovery and among numerous biologically active natural products. However, its synthetic preparation relies on multistep sequences and heavily depends on the type of substitution required in the core of the desired β-carboline target. Herein, we demonstrate that this structural motif can be accessed with the microwave-assisted electrocyclic cyclization of heterotrienic aci (alkylideneazinic acid) forms of 3-nitrovinylindoles. The reaction can start with 3-nitrovinylindoles themselves under two sets of conditions. The first one involves microwave irradiation of butanolic solutions of 3-nitrovinylindoles, whereas the second one consists of prior Boc protection of indolic nitrogen, where the protecting group cleanly comes off during the course of the reaction. Alternatively, the reaction can start with 3-nitrovinylindoles prepared in situ using various processes. Finally, the reaction may utilize indoles with β-nitrostyrenes, likely involving the intermediacy of spirocyclic oxazolines, which rearrange to similar heterotrienic systems undergoing cyclization to β-carbolines. As part of this study, several natural products, namely, alkaloids norharmane, harmane, and eudistomin N, were synthesized.
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Affiliation(s)
- Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Nikolai A. Arutiunov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Nikita K. Kirilov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Inna V. Aksenova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia; (N.A.A.); (A.V.A.); (N.K.K.); (I.V.A.); (D.A.A.); (E.V.A.); (M.R.)
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, 601 University Dr., San Marcos, TX 78666, USA
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3
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Leonel G, Klann I, Back DF, Iglesias BA, Nogueira CW, Zeni G. Electrophile-Promoted Nucleophilic Cyclization of 2-Alkynylindoles to Give 4-Substituted Oxazinoindolones. Chemistry 2023; 29:e202202847. [PMID: 36322046 DOI: 10.1002/chem.202202847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/13/2022] [Accepted: 11/02/2022] [Indexed: 12/23/2022]
Abstract
A method for the synthesis of 4-organoselanyl oxazinoindolone derivatives by the cascade cyclization of N-(alkoxycarbonyl)-2-alkynylindoles using iron(III) chloride and diorganyl diselenides as promoters was developed. This protocol was applied to a series of N-(alkoxycarbonyl)-2-alkynylindoles containing different substituents. The reaction conditions also tolerated a variety of diorganyl diselenides having both electron donating and electron withdrawing groups. However, the reaction did not work for diorganyl disulfides and ditellurides. The reaction mechanism seems to proceed via an ionic pathway and the cooperative action between iron(III) chloride and diorganyl diselenides is crucial for successful cyclization. We also found that using the same starting materials, by simply changing the electrophilic source to iodine, led to the formation of 4-iodo-oxazinoindolones. The high reactivity of Csp2 -Se and Csp2 -I bonds were tested under cross-coupling conditions leading to the preparation of a new class of functionalized indole derivatives. In addition, the absorption, emission and electrochemical properties of 4-organoselanyl oxazinoindolones showed an important relationship with the substituents of the aromatic rings. The advantages of the methodology include the use of electrophilic to promote the cyclization reaction and functionalization of the indole ring, and the electronic properties presented by the prepared compounds can be exploited as probes, analyte detectors and optical materials.
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Affiliation(s)
- Guilherme Leonel
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica, Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Isabella Klann
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica, Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Davi F Back
- Laboratório de Materiais Inorgânicos Departamento de Química, CCNE, UFSM, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Bernardo A Iglesias
- Laboratório de Bioinorgânica e Materiais Porfirínicos Departamento de Química, CCNE, UFSM, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Cristina W Nogueira
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica, Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica, Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
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4
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Abstract
Metal-catalyzed hydrofunctionalization reactions of alkynes, i.e., the addition of Y–H units (Y = heteroatom or carbon) across the carbon–carbon triple bond, have attracted enormous attention for decades since they allow the straightforward and atom-economic access to a wide variety of functionalized olefins and, in its intramolecular version, to relevant heterocyclic and carbocyclic compounds. Despite conjugated 1,3-diynes being considered key building blocks in synthetic organic chemistry, this particular class of alkynes has been much less employed in hydrofunctionalization reactions when compared to terminal or internal monoynes. The presence of two C≡C bonds in conjugated 1,3-diynes adds to the classical regio- and stereocontrol issues associated with the alkyne hydrofunctionalization processes’ other problems, such as the possibility to undergo 1,2-, 3,4-, or 1,4-monoadditions as well as double addition reactions, thus increasing the number of potential products that can be formed. In this review article, metal-catalyzed hydrofunctionalization reactions of these challenging substrates are comprehensively discussed.
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5
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Taha I, Keshk EM, Khalil AGM, Fekri A. Benzocaine as a precursor of promising derivatives: synthesis, reactions, and biological activity. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01808-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Xie H, Zhong M, Kang H, Shu B, Zhang S. A Cascade Rh(III)‐catalyzed C−H Activation/Chemodivergent Annulation of
N
‐carbamoylindoles with Sulfoxonium Ylides for the Synthesis of Dihydropyrimidoindolone and Tricyclic [1,3]Oxazino[3,4‐
a
]indol‐1‐ones Derivatives. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001380] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hui Xie
- Center for Drug Research and Development Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China
| | - Mei Zhong
- School of Pharmacy Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China
| | - Hua‐Jie Kang
- School of Pharmacy Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China
| | - Bing Shu
- School of Pharmacy Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China
| | - Shang‐Shi Zhang
- Center for Drug Research and Development Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China
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7
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Pandit YB, Liu R. Gold‐Catalyzed Aminoaromatizations of 1,2‐Bis(alkynyl)benzenes with Anthranils to Yield 1‐Amino‐2‐napthaldehyde Products. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yashwant Bhaskar Pandit
- Frontier Research Center for Fundamental and Basic Science of MattersDepartment of ChemistryNational Tsing-Hua University Hsinchu Taiwan, ROC
| | - Rai‐Shung Liu
- Frontier Research Center for Fundamental and Basic Science of MattersDepartment of ChemistryNational Tsing-Hua University Hsinchu Taiwan, ROC
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8
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Skaria M, Hsu YC, Jiang YT, Lu MY, Kuo TC, Cheng MJ, Liu RS. Gold-Catalyzed Oxidations of 1,3-Diynamides with C(1) versus C(3) Regioselectivity: Catalyst-Dependent Oxidative Cyclizations in the C(3) Oxidation. Org Lett 2020; 22:4478-4482. [DOI: 10.1021/acs.orglett.0c01480] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Manisha Skaria
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Kuang-Fu Road, Hsinchu 30013, Taiwan, ROC
| | - Yu-Chen Hsu
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Kuang-Fu Road, Hsinchu 30013, Taiwan, ROC
| | - Yan-Ting Jiang
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Kuang-Fu Road, Hsinchu 30013, Taiwan, ROC
| | - Ming-Yi Lu
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Kuang-Fu Road, Hsinchu 30013, Taiwan, ROC
| | - Tung-Chun Kuo
- Department of Chemistry, National Cheng Kung University, East District, Tainan City, Taiwan, ROC
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, East District, Tainan City, Taiwan, ROC
| | - Rai-Shung Liu
- Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Kuang-Fu Road, Hsinchu 30013, Taiwan, ROC
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9
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Lei J, Song GT, Luo YF, Tang DY, Yan W, Li HY, Chen ZZ, Xu ZG. Synthesis of indoline-piperidinones viaa novel Ugi, ring expansion, pseudo-Dieckmann condensation and rearrangement cascade reaction. Org Chem Front 2020. [DOI: 10.1039/d0qo00028k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Synthesis of functionalized indoline-piperidinones through an Ugi, ring expansion,pseudo-Dieckmann and rearrangement cascade reaction in one-pot.
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Affiliation(s)
- Jie Lei
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Gui-Ting Song
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Ya-Fei Luo
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Dian-Yong Tang
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Wei Yan
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Arkansas for Medical Sciences
- Little Rock
- USA
| | - Hong-yu Li
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Arkansas for Medical Sciences
- Little Rock
- USA
| | - Zhong-Zhu Chen
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Zhi-Gang Xu
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
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10
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Zhang M, Ding Y, Qin HX, Xu ZG, Lan HT, Yang DL, Yi C. One-pot synthesis of substituted pyrrole-imidazole derivatives with anticancer activity. Mol Divers 2019; 24:1177-1184. [PMID: 31494841 DOI: 10.1007/s11030-019-09982-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/24/2019] [Indexed: 02/05/2023]
Abstract
A facile and efficient method to synthesize pyrrole-imidazole was developed via a post-Ugi cascade reaction followed by one purification procedure. Synthesized pyrrole-imidazole was collected by performing a mild reaction and a simple procedure, which could be applicable to a broad scope of functionalized anilines. The screening results demonstrated that compound 7e exhibited a high potency of anticancer activity in human pancreatic cancer cell lines PANC and ASPC-1. Our work shed light on the potential of post-Ugi cascade reaction in combinatorial and medicinal chemistry.
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Affiliation(s)
- Ming Zhang
- Department of Abdominal Cancer, West China Hospital, West China Clinical Medical School, Sichuan University, 37 Guoxue Xiang, Chengdu, 610041, China.,Cancer Center, Academy of Medical Sciences and Sichuan Provincial People's Hospital, Affiliated Hospital of University of Electronic Science and Technology of China, Chengdu, 610000, Sichuan, China
| | - Yong Ding
- International Academy of Targeted Therapeutics and Innovation, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, China
| | - Hong-Xia Qin
- International Academy of Targeted Therapeutics and Innovation, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, China
| | - Zhi-Gang Xu
- International Academy of Targeted Therapeutics and Innovation, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, China
| | - Hai-Tao Lan
- Cancer Center, Academy of Medical Sciences and Sichuan Provincial People's Hospital, Affiliated Hospital of University of Electronic Science and Technology of China, Chengdu, 610000, Sichuan, China.
| | - Dong-Lin Yang
- International Academy of Targeted Therapeutics and Innovation, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, China.
| | - Cheng Yi
- Department of Abdominal Cancer, West China Hospital, West China Clinical Medical School, Sichuan University, 37 Guoxue Xiang, Chengdu, 610041, China.
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11
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Liu J, Chakraborty P, Zhang H, Zhong L, Wang ZX, Huang X. Gold-Catalyzed Atom-Economic Synthesis of Sulfone-Containing Pyrrolo[2,1-a]isoquinolines from Diynamides: Evidence for Consecutive Sulfonyl Migration. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04934] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jibing Liu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pushkin Chakraborty
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Heng Zhang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liang Zhong
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xueliang Huang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Tao L, Shi M. (CH 3) 2CuLi/Cu(OTf) 2 Mediated N- or O-Cyclization of Urea-Tethered Cyclobuta[ b]indolines. Org Lett 2019; 21:129-133. [PMID: 30571130 DOI: 10.1021/acs.orglett.8b03565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A (CH3)2CuLi/Cu(OTf)2 mediated N- or O-cyclization of urea-tethered cyclobuta[ b]indolines has been reported in this paper, giving a new synthetic protocol for the construction of pyrimido[1,6- a]indolone and cyclic imidate derivatives in moderate to good yields with a broad substrate scope under mild conditions. A plausible reaction mechanism has been also proposed on the basis of previous reports and the control experiments.
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Affiliation(s)
- Leyi Tao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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13
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Ciulla MG, Zimmermann S, Kumar K. Cascade reaction based synthetic strategies targeting biologically intriguing indole polycycles. Org Biomol Chem 2019; 17:413-431. [DOI: 10.1039/c8ob02620c] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this review, cascade reaction based synthesis strategies delivering biologically intriguing indole polycycles are presented.
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Affiliation(s)
- Maria Gessica Ciulla
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
| | - Stefan Zimmermann
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
- Fakultät Chemie und Chemische Biologie Technische Universität Dortmund
| | - Kamal Kumar
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
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14
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Undeela S, Chandra R, Nanubolu JB, Menon RS. Gold-catalysed regioselective cascade cycloisomerisation reactions of aza-enediynes for the synthesis of substituted benzoisoquinoline derivatives. Org Biomol Chem 2019; 17:369-373. [DOI: 10.1039/c8ob02544d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A facile, regioselective, gold-catalysed cascade cycloisomerisation of easily assembled aza-enediynes to afford dihydrobenzo[f]isoquinoline derivatives is reported.
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Affiliation(s)
- Sridhar Undeela
- Crop Protections Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Rajesh Chandra
- Crop Protections Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | | | - Rajeev S. Menon
- Department of Chemistry
- Central University of Haryana
- Mahendergarh
- India
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15
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Fang S, Jiang G, Li M, Liu Z, Jiang H, Wu W. Palladium-catalyzed regioselective C–H alkynylation of indoles with haloalkynes: access to functionalized 7-alkynylindoles. Chem Commun (Camb) 2019; 55:13769-13772. [DOI: 10.1039/c9cc07263b] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A palladium-catalyzed exclusively selective alkynylation of indoles has been reported, affording concise access to 7-alkynylindoles from readily available starting materials.
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Affiliation(s)
- Songjia Fang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Guangbin Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Meng Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Zhenying Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wanqing Wu
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
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16
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17
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Rode ND, Aschi M, Chiarini M, Del Vecchio L, Marinelli F, Arcadi A. Reaction of β-(2-aminophenyl)-α,β-Ynones with Tosyl Isocyanate: Experimental and Computational Investigations. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800733] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Navnath D. Rode
- Dipartimento di Scienze Fisiche e Chimiche; Università di L'Aquila; Via Vetoio 67010 Coppito (AQ) Italy
| | - Massimiliano Aschi
- Dipartimento di Scienze Fisiche e Chimiche; Università di L'Aquila; Via Vetoio 67010 Coppito (AQ) Italy
| | - Marco Chiarini
- Facoltà di Bioscienze e Tecnologie Agro-alimentari e Ambientali; Università di Teramo; Via Balzarini 1 64100 Teramo (TE) Italy
| | - Luana Del Vecchio
- Dipartimento di Scienze Fisiche e Chimiche; Università di L'Aquila; Via Vetoio 67010 Coppito (AQ) Italy
| | - Fabio Marinelli
- Dipartimento di Scienze Fisiche e Chimiche; Università di L'Aquila; Via Vetoio 67010 Coppito (AQ) Italy
| | - Antonio Arcadi
- Dipartimento di Scienze Fisiche e Chimiche; Università di L'Aquila; Via Vetoio 67010 Coppito (AQ) Italy
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18
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Chung MC, Chan YH, Chang WJ, Hou DR. Synthesis of 2,3-dihydro-1H-pyrroles by intramolecular cyclization of N-(3-butynyl)-sulfonamides. Org Biomol Chem 2017; 15:3783-3790. [DOI: 10.1039/c7ob00528h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroamination of 3-butynamine derivatives to give non-aromatic 2,3-dihydropyrroles was achieved by using PdCl2 or AuCl as the catalyst.
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Affiliation(s)
- Min-Ching Chung
- Department of Chemistry
- National Central University
- Jhong-li
- Taiwan
| | - Yung-Hsiang Chan
- Department of Chemistry
- National Central University
- Jhong-li
- Taiwan
| | - Wen-Jung Chang
- Department of Chemistry
- National Central University
- Jhong-li
- Taiwan
| | - Duen-Ren Hou
- Department of Chemistry
- National Central University
- Jhong-li
- Taiwan
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19
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Foarta F, Landis CR. Condensation Oligomers with Sequence Control but without Coupling Reagents and Protecting Groups via Asymmetric Hydroformylation and Hydroacyloxylation. J Org Chem 2016; 81:11250-11255. [DOI: 10.1021/acs.joc.6b02210] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Floriana Foarta
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Clark R. Landis
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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20
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Das T, Kayet A, Mishra R, Singh VK. Highly fluorescent 1,2-dihydropyrimido[1,6-α]indole: an efficient metal free synthesis and photophysical study. Chem Commun (Camb) 2016; 52:11231-4. [PMID: 27560510 DOI: 10.1039/c6cc05378e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal free route to highly fluorescent 1,2-dihydropyrimido[1,6-α]indole derivatives has been developed via base catalyzed aldol followed by the Mannich reaction of indole-2-carboxaldehyde with ethyl N-arylideneglycinate at room temperature. This transformation consists of the sequential formation of two new bonds to afford highly functionalized pyrimidoindole derivatives under mild reaction conditions. Photophysical properties of the products have also been reported.
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Affiliation(s)
- Tapas Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal-462 066, India
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21
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Abstract
In this critical review the reactivity patterns observed with different types of diyne substrates in gold catalysis are discussed. Apart from the many examples from homogeneous catalysis, the few examples from heterogeneous gold catalysis are also included. With a proper arrangement of the two alkynes unique and exciting reactivity patterns like 1,3-carbonyl transpositions, carbene transfer reactions, cascade annulations, macrocyclisations or the formation of gold vinylidene intermediates are observed. These reactions are of interest for organic synthesis, for pharmaceutical and medicinal chemistry and for material science.
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Affiliation(s)
- Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
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22
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Undeela S, Ravikumar G, Nanubolu JB, Singarapu KK, Menon RS. The facile synthesis of 1-benzoazepine derivatives via gold-catalyzed regioselective cycloisomerization reactions of N-(o-alkynylaryl)-N-vinyl sulfonamides. Chem Commun (Camb) 2016; 52:4824-7. [DOI: 10.1039/c6cc01061j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-catalyzed, regioselective cycloisomerization of N-(o-alkynylaryl)-N-vinyl sulfonamides afforded high yields of 2-sulfonylmethyl-1-benzoazepine derivatives.
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Affiliation(s)
- Sridhar Undeela
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Gurram Ravikumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | | | - Kiran Kumar Singarapu
- Centre for Nuclear Magnetic Resonance
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Rajeev S. Menon
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- Department of Chemistry
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23
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Gold-Catalyzed Synthesis of Nitrogen Heterocyclic Compounds via Hydroamination Reactions. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/7081_2015_5001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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24
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Dell'Acqua M, Ronda L, Piano R, Pellegrino S, Clerici F, Rossi E, Mozzarelli A, Gelmi ML, Abbiati G. MediaChrom: Discovering a Class of Pyrimidoindolone-Based Polarity-Sensitive Dyes. J Org Chem 2015; 80:10939-54. [PMID: 26473465 DOI: 10.1021/acs.joc.5b02066] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A small library of six polarity-sensitive fluorescent dyes, nicknamed MediaChrom, was prepared. This class of dyes is characterized by a pyrimidoindolone core fitted out with a conjugated push-pull system and a carboxy linker for a conceivable coupling with biomolecules. The optimized eight-step synthetic strategy involves a highly chemo- and regioselective gold-catalyzed cycloisomerization reaction. The photophysical properties of MediaChrom dyes have been evaluated in-depth. In particular, the MediaChrom bearing a diethylamino as an electron-donating group and a trifluoromethyl as an electron-withdrawing group displays the most interesting and advantageous spectroscopic features (e.g., absorption and emission in the visible range and a good quantum yield). Promising results in terms of sensitivity have been obtained in vitro on this dye as a membrane/lipophilic probe and as a peptide fluorescent label.
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Affiliation(s)
- Monica Dell'Acqua
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | | | | | - Sara Pellegrino
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | - Francesca Clerici
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | - Elisabetta Rossi
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | | | - Maria Luisa Gelmi
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | - Giorgio Abbiati
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
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25
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Otani T, Jiang X, Cho K, Araki R, Kutsumura N, Saito T. Lewis Acid-Catalyzed or Base-Promoted Regioselective Cycloisomerization ofN-Imidoyl-o-alkynylanilines for Synthesis ofN-Imidoyl-(1 H)-indoles and 4-Alkylidene-3,4-dihydroquinazolines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401186] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Jiang Y, Wei Y, Tang XY, Shi M. Gold(I)-Catalyzed Selective Heterocyclization of Propargylic Thioureas: Mechanistic Study of Competitive Gold-Activation Mode. Chemistry 2015; 21:7675-81. [DOI: 10.1002/chem.201500466] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Indexed: 11/08/2022]
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27
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Naoe S, Saito T, Uchiyama M, Oishi S, Fujii N, Ohno H. Direct Construction of Fused Indoles by Gold-Catalyzed Cascade Cyclization of Conjugated Diynes. Org Lett 2015; 17:1774-7. [DOI: 10.1021/acs.orglett.5b00550] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Saori Naoe
- Graduate School
of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Tatsuo Saito
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-0033, Japan
| | - Shinya Oishi
- Graduate School
of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Nobutaka Fujii
- Graduate School
of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School
of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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28
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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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29
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Krasavin M, Sapegin A, Dorogov M. A convenient preparation of diversely substituted fused 2-amino- and 2-alkylthionicotinonitriles under microwave irradiation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.09.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Zhu D, Cao X, Yu B. Au(i) π-bis(tert-butyldimethylsilyl)acetylene triphenylphosphine complex, an effective pre-catalyst for Au(i)-catalyzed reactions. Org Chem Front 2015. [DOI: 10.1039/c5qo00023h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A [Ph3PAu]+ η2-alkyne π complex is found to be shelf-stable and effective for a range of the Au(i)-catalyzed alkyne π activation reactions.
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Affiliation(s)
- Dapeng Zhu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xin Cao
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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31
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Matsuda Y, Naoe S, Oishi S, Fujii N, Ohno H. Formal [4+2] Reaction between 1,3-Diynes and Pyrroles: Gold(I)-Catalyzed Indole Synthesis by Double Hydroarylation. Chemistry 2014; 21:1463-7. [DOI: 10.1002/chem.201405903] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Indexed: 01/24/2023]
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32
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Zhang Y, Zheng J, Cui S. Rh(III)-Catalyzed C–H Activation/Cyclization of Indoles and Pyrroles: Divergent Synthesis of Heterocycles. J Org Chem 2014; 79:6490-500. [DOI: 10.1021/jo500902n] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yan Zhang
- Institute of Materia Medica
and College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jing Zheng
- Institute of Materia Medica
and College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Sunliang Cui
- Institute of Materia Medica
and College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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33
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Zhdanko A, Maier ME. Mechanistic Study of Gold(I)-Catalyzed Hydroamination of Alkynes: Outer or Inner Sphere Mechanism? Angew Chem Int Ed Engl 2014; 53:7760-4. [DOI: 10.1002/anie.201402557] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/07/2014] [Indexed: 01/20/2023]
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34
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Zhdanko A, Maier ME. Mechanistic Study of Gold(I)-Catalyzed Hydroamination of Alkynes: Outer or Inner Sphere Mechanism? Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402557] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Barbour PM, Marholz LJ, Chang L, Xu W, Wang X. Gold Approaches to Polycyclic Indole Alkaloids. CHEM LETT 2014. [DOI: 10.1246/cl.131230] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- P. Michael Barbour
- Department of Chemistry and Biochemistry, University of Colorado Boulder
| | - Laura J. Marholz
- Department of Chemistry and Biochemistry, University of Colorado Boulder
| | - Le Chang
- Department of Chemistry and Biochemistry, University of Colorado Boulder
| | - Wenqing Xu
- Department of Chemistry and Biochemistry, University of Colorado Boulder
| | - Xiang Wang
- Department of Chemistry and Biochemistry, University of Colorado Boulder
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36
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Gold(I)-Catalyzed Reactions of 1-(ortho-Alkynylaryl)ureas: Highly Selective Heterocyclization and Synthesis of MixedN,O-Acetals. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300730] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Jiang H, Gao H, Liu B, Wu W. Synthesis of 6-aminophenanthridines via palladium-catalyzed insertion of isocyanides into N-sulfonyl-2-aminobiaryls. RSC Adv 2014. [DOI: 10.1039/c4ra02381a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A robust route to a diverse set of 6-aminophenanthridines via palladium-catalyzed C–H activation of N-sulfonyl-2-aminobiaryl and isocyanide insertion is reported.
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Affiliation(s)
- Huanfeng Jiang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
| | - Hanling Gao
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
| | - Bifu Liu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
| | - Wanqing Wu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
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38
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Wang T, Shi S, Pflästerer D, Rettenmeier E, Rudolph M, Rominger F, Hashmi ASK. Synthesis of Polycyclic Indole Skeletons by a Gold(I)-Catalyzed Cascade Reaction. Chemistry 2013; 20:292-6. [DOI: 10.1002/chem.201303539] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Indexed: 11/06/2022]
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39
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Gimeno A, Cuenca AB, Suárez-Pantiga S, de Arellano CR, Medio-Simón M, Asensio G. Competitive Gold-Activation Modes in Terminal Alkynes: An Experimental and Mechanistic Study. Chemistry 2013; 20:683-8. [DOI: 10.1002/chem.201304087] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Indexed: 01/14/2023]
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40
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Gupta S, Koley D, Ravikumar K, Kundu B. Counter Ion Effect in Au/Ag-Catalyzed Chemoselective 6-endo-dig N- and O-Cyclizations of Enyne–Urea System: Diversity-Oriented Synthesis of Annulated Indoles. J Org Chem 2013; 78:8624-33. [DOI: 10.1021/jo4013332] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sahaj Gupta
- Medicinal and Process
Chemistry
Division, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Dipankar Koley
- Medicinal and Process
Chemistry
Division, CSIR-Central Drug Research Institute, Lucknow 226001, India
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Krishnan Ravikumar
- X-ray Crystallography Division, CSIR-Indian Institute of Chemical Technology, Tarnaka,
Hyderabad 500607, India
| | - Bijoy Kundu
- Medicinal and Process
Chemistry
Division, CSIR-Central Drug Research Institute, Lucknow 226001, India
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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