1
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Tali JA, Kumar G, Sharma BK, Rasool Y, Sharma Y, Shankar R. Synthesis and site selective C-H functionalization of imidazo-[1,2- a]pyridines. Org Biomol Chem 2023; 21:7267-7289. [PMID: 37655687 DOI: 10.1039/d3ob00849e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Imidazo[1,2-a]pyridine has attracted much interest in drug development because of its potent medicinal properties, therefore the discovery of novel methods for its synthesis and functionalization continues to be an exciting area of research. Although transition metal catalysis has fuelled the most significant developments, extremely beneficial metal-free approaches have also been identified. Even though pertinent reviews focused on imidazo[1,2-a]pyridine synthesis, properties (physicochemical and medicinal), and functionalization at the C3 position have been published, none of these reviews has focused on the outcomes obtained in the field of global ring functionalization. We wish here to describe a brief synthesis and an overview of all the functionalization reactions at each carbon atom, viz, C2, C3, C5, C6, C7 and C8 of this scaffold, divided into sections based on site-selectivity and the type of functionalization methods used.
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Affiliation(s)
- Javeed Ahmad Tali
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Gulshan Kumar
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Bhupesh Kumar Sharma
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Younis Rasool
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Yashika Sharma
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
| | - Ravi Shankar
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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2
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Stroek W, Albrecht M. Discovery of a simple iron catalyst reveals the intimate steps of C-H amination to form C-N bonds. Chem Sci 2023; 14:2849-2859. [PMID: 36937598 PMCID: PMC10016609 DOI: 10.1039/d2sc04170g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/28/2022] [Indexed: 12/29/2022] Open
Abstract
Formation of ubiquitous C-N bonds traditionally uses prefunctionalized carbon precursors. Recently, metal-catalyzed amination of unfunctionalized C-H bonds with azides has become an attractive and atom-economic strategy for C-N bond formation, though all catalysts contain sophisticated ligands. Here, we report Fe(HMDS)2 (HMDS = N(SiMe3)2 -) as an easy-to-prepare catalyst for intramolecular C-H amination. The catalyst shows unprecedented turnover frequencies (110 h-1 vs. 70 h-1 reported to date) and requires no additives. Amination is successful for benzylic and aliphatic C-H bonds (>80% yield) and occurs even at room temperature. The simplicity of the catalyst enabled for the first time comprehensive mechanistic investigations. Kinetic, stoichiometric, and computational studies unveiled the intimate steps of the C-H amination process, including the resting state of the catalyst and turnover-limiting N2 loss of the coordinated azide. The high reactivity of the iron imido intermediate is rationalized by its complex spin system revealing imidyl and nitrene character.
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Affiliation(s)
- Wowa Stroek
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern CH-3012 Bern Switzerland
| | - Martin Albrecht
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern CH-3012 Bern Switzerland
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3
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Chen D, Han C. Synthesis, properties and crystal structure of an octahedral iridium(III) complex with an arylnitrene inserted into an Ir-C bond. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Shi R, Tan J, Wang Z, Wang Y. Oxidatively Induced Selective Carbon-Carbon Bond Formation From Isolated Rhodium(III) Complexes. Chemistry 2021; 27:14317-14321. [PMID: 34424573 DOI: 10.1002/chem.202102502] [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: 07/10/2021] [Indexed: 11/07/2022]
Abstract
This work focuses on oxidatively induced regioselective intramolecular C-C bond formations based on the RhIII complexes synthesized from dirhodium(II) trifluoroacetate with 2-arylpyridines. With the selection of electron-donating groups on the arene rings of 2-arylpyridines, the unusual meta-ortho C-C bond-forming was favored, which led to the formation of meta-substituted 2-arylpyridine homocoupling dimers. On the contrary, the electron-withdrawing groups have tendency to occur conventional ortho-ortho bond-forming, resulting in the formation of new RhIII complexes possessing the intriguing RhIII (TFA)3 fragment. Preliminary mechanistic experiments suggest that the sequential oxidation of RhIII occurred in the reaction.
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Affiliation(s)
- Ruoyi Shi
- Department of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Jiantao Tan
- School of Primary Education, Chongqing Normal University, Chongqing, 400700, P. R. China
| | - Zhifan Wang
- Department of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yuanhua Wang
- Department of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
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5
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Sunny S, Karvembu R. Recent Advances in Cobalt‐Catalyzed, Directing‐Group‐Assisted C−H Bond Amidation Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100558] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sereena Sunny
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
| | - Ramasamy Karvembu
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
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6
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Yu F, Shen W, Sun Y, Liao Y, Jin S, Lu X, He R, Zhong L, Zhong G, Zhang J. Ruthenium-catalyzed C-H amination of aroylsilanes. Org Biomol Chem 2021; 19:6313-6321. [PMID: 34212972 DOI: 10.1039/d1ob00935d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Acylsilane represents a valuable synthon in synthetic chemistry. We report on ruthenium(ii)-catalyzed ortho-C-H amination of aroylsilanes to provide facile access to synthetically useful imidobenzoylsilanes and tosyl-amidobenzoylsilanes. The protocols, with broad substrate scope and excellent functional group tolerance, are enabled with the weak chelation-assistance of acylsilane via C-H cyclometallation.
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Affiliation(s)
- Feifei Yu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Wenzhou Shen
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Yaling Sun
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Yilei Liao
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Shuqi Jin
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Xiunan Lu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Rui He
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China.
| | - Liangjun Zhong
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China.
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jian Zhang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China. and Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China.
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7
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Nickel-mediated C(sp2)-H amidation in synthesis of secondary sulfonamides via sulfonyl azides as amino source. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152825] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Kawashima T, Matsumoto Y, Sato T, Yamada YMA, Kono C, Tsurusaki A, Kamikawa K. Synthesis, Structure, and Complexation of an S-Shaped Double Azahelicene with Inner-Edge Nitrogen Atoms. Chemistry 2020; 26:13170-13176. [PMID: 32459379 DOI: 10.1002/chem.202002405] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 05/25/2020] [Indexed: 01/12/2023]
Abstract
An S-shaped double azahelicene (1) was synthesized in excellent yield by a palladium-catalyzed double dehydrogenative C-H coupling reaction. The stereochemistry of 1 was confirmed to be dl by single-crystal X-ray diffraction analysis. Selective formation of dl-1 was attributed to the isomerization of the kinetically controlled product (meso-1) into the more thermodynamically stable dl-1 under the applied reaction conditions. dl-1 can coordinate to palladium(II) in a bidentate trans-chelating fashion, which was confirmed by X-ray absorption fine structure (XAFS) as well as by X-ray photoelectron spectroscopy (XPS), diffuse reflectance (DR) UV/Vis, and far-infrared (FIR) absorption spectroscopy. Theoretical calculations of palladium complex 16 revealed a weak attractive interaction between palladium and carbon atoms on the central dimethoxynaphthalene core, which could facilitate a disproportionation between a trans-chelating (dl-1)⋅PdCl2 complex and PdCl2 to form 16.
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Affiliation(s)
- Takahiro Kawashima
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Yuki Matsumoto
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Takuma Sato
- RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan
| | - Yoichi M A Yamada
- RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan
| | - Choji Kono
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Akihiro Tsurusaki
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Ken Kamikawa
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
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9
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Electronic and Steric Manipulation of the Agostic Interaction in benzo[
h
]quinoline Complexes of Pd(II) and Implications for the Formation of η
1
‐Pd–C Bonds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Antoni PW, Mackenroth AV, Mulks FF, Rudolph M, Helmchen G, Hashmi ASK. Dibenzothiophenesulfilimines: A Convenient Approach to Intermolecular Rhodium-Catalysed C-H Amidation. Chemistry 2020; 26:8235-8238. [PMID: 32428332 PMCID: PMC7383884 DOI: 10.1002/chem.202002371] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Indexed: 11/18/2022]
Abstract
A sulfilimine‐based Group 9 transition‐metal‐catalysed C−H amidation procedure is reported. Dibenzothiophene‐based sulfilimines were shown to constitute a class of novel amidation reagents which enable the transfer of a wide range of N‐sulfonyl and N‐acyl moieties. It was demonstrated that sulfilimines, which are easily accessible from cheap reagents, are safe‐to‐handle and represent broadly applicable amidation reagents. The dibenzothiophene can be recycled after use. The C−H amidation was shown to proceed with high selectivity and gave the mono‐amidated products, mostly in good to excellent yields.
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Affiliation(s)
- Patrick W Antoni
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Alexandra V Mackenroth
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Florian F Mulks
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Günter Helmchen
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.,Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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11
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Yu Y, Luo G, Yang J, Luo Y. Theoretical studies on the N–X (X = Cl, O) bond activation mechanism in catalytic C–H amination. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02555c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A favorable SN2-type N–Cl bond cleavage mechanism are proposed for Rh-catalysed C–H amination, which also works for N–O bond cleavage in Rh, Ru, and Pd analogous systems. These results could provide new understanding of C–H amination.
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Affiliation(s)
- Yang Yu
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Gen Luo
- Institutes of Physical Science and Information Technology
- Anhui University
- Hefei 230601
- China
| | - Jimin Yang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
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12
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Oloyede HO, Woods JAO, Görls H, Plass W, Eseola AO. The necessity of free and uncrowded coordination environments in biomimetic complex models: oxidative coupling by mixed-ligand cobalt(ii) complexes of diazene–disulfonamide. NEW J CHEM 2019. [DOI: 10.1039/c9nj04396a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Importance of molecular access to Co(ii) site is shown by new tridentate disulfonamides, which stabilize uncommon 5-coordinate mixed-ligand vacant-octahedral geometries.
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Affiliation(s)
| | | | - Helmar Görls
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | - Abiodun Omokehinde Eseola
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
- Materials Chemistry group
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13
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Yu Y, Luo G, Yang J, Luo Y. Cobalt-catalysed unactivated C(sp 3)–H amination: two-state reactivity and multi-reference electronic character. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00239a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A remarkable two-state reactivity scenario and an unusual multi-reference character have been computationally found in Co-catalysed C(sp3)–H amination. In addition, the investigation on the additive, aminating reagent, metal center, and auxiliary ligand provides implications for development of new catalytic C–H functionalization systems.
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Affiliation(s)
- Yang Yu
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Gen Luo
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Jimin Yang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
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14
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Bai H, Fu X, Pan J, Ma H, Chen Z, Ding T, Zhang S. Transition Metal‐Controlled Direct Regioselective Intermolecular Amidation of C−H Bonds with Azodicarboxylates: Scope, Mechanistic Studies, and Applications. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800623] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- He‐Yuan Bai
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Xin Fu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Jin‐Long Pan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Hai‐Qian Ma
- Zhiyuan CollegeShanghai Jiao Tong University Shanghai 200240 China
| | - Zhi‐Min Chen
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Tong‐Mei Ding
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Shu‐Yu Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 People's Republic of China
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15
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16
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Timsina YN, Gupton BF, Ellis KC. Palladium-Catalyzed C–H Amination of C(sp2) and C(sp3)–H Bonds: Mechanism and Scope for N-Based Molecule Synthesis. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01168] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yam N. Timsina
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States
| | - B. Frank Gupton
- Department of Chemical and Life Sciences Engineering, School of Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Keith C. Ellis
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States
- The Institute for Structural Biology, Drug Discovery, and Development, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298-0037, United States
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17
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Tao L, Shi M. Pd(II)-Catalyzed Cyclization-Oxidation of Urea-Tethered Alkylidenecyclopropanes. Org Lett 2018; 20:3017-3020. [PMID: 29722991 DOI: 10.1021/acs.orglett.8b01047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A Pd(OAc)2-catalyzed intramolecular oxidative cyclization of urea-tethered alkylidenecyclopropanes with urea as a nitrogen source through a Pd(II)/Pd(IV) catalytic cycle has been presented, giving the corresponding cyclobuta[ b]indoline derivatives in moderate to good yields with a broad substrate scope. The reaction proceeds through a ring expansion of alkylidenecyclopropane along with the nucleophilic attack of nitrogen atom onto the in situ generated palladium carbenoid species as well as an oxidation process.
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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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18
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Desnoyer AN, Love JA. Recent advances in well-defined, late transition metal complexes that make and/or break C-N, C-O and C-S bonds. Chem Soc Rev 2018; 46:197-238. [PMID: 27849097 DOI: 10.1039/c6cs00150e] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Chemical transformations that result in either the formation or cleavage of carbon-heteroatom bonds are among the most important processes in the chemical sciences. Herein, we present a review on the reactivity of well-defined, late-transition metal complexes that result in the making and breaking of C-N, C-O and C-S bonds via fundamental organometallic reactions, i.e. oxidative addition, reductive elimination, insertion and elimination reactions. When appropriate, emphasis is placed on structural and spectroscopic characterization techniques, as well as mechanistic data.
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Affiliation(s)
- Addison N Desnoyer
- Department of Chemistry, The University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
| | - Jennifer A Love
- Department of Chemistry, The University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
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19
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Graphene-catalyzed formation of C≡N bonds via cleavage of C-C and N-O bonds in ethanol and nitrate under room temperature. Sci Rep 2018; 8:1750. [PMID: 29379108 PMCID: PMC5789086 DOI: 10.1038/s41598-018-20238-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/15/2018] [Indexed: 11/08/2022] Open
Abstract
The cleavage of carbon-carbon bonds and the formation of carbon-nitrogen bonds play crucial roles in chemical synthesis. However, these reactions usually proceed at high temperature and involve multiple steps. Herein, we report an unusual and novel reaction catalyzed by graphene. The C-C bond in ethanol and the N-O bond in nitrate can be broken under room temperature, accompanied by the formation of the C≡N bond. We demonstrate these reactions and elucidate their mechanisms by verifying that the product is silver cyanide which was formed when mixing a solution of silver nitrate and ethanol with graphene dispersion in ethanol at room temperature. The pivotal reason for the reaction is the formation of the precipitated silver cyanide. In a broader context, this discovery opens a significant new path for the breakage of the C-C bond in ethanol and the synthesis of nitriles under mild conditions. Also, the graphene was first reported as a catalyst for the room-temperature reaction.
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20
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Wang X, Song S, Jiao N. Rh-catalyzed Transient Directing Group Promoted C-H Amidation of Benzaldehydes Utilizing Dioxazolones. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201700726] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaoyang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38; Beijing 100191 China
| | - Song Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38; Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38; Beijing 100191 China
- State Key Laboratory of Organometallic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
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21
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Das D, Samanta R. Iridium(III)-Catalyzed Regiocontrolled Direct Amidation of Isoquinolones and Pyridones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701244] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Debapratim Das
- Department of Chemistry; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Rajarshi Samanta
- Department of Chemistry; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
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22
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Copper-catalyzed amination of phenylboronic acids with benzofurazan 1-oxides. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62914-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Hendrick CE, Bitting KJ, Cho S, Wang Q. Site-Selective Copper-Catalyzed Amination and Azidation of Arenes and Heteroarenes via Deprotonative Zincation. J Am Chem Soc 2017; 139:11622-11628. [PMID: 28753007 PMCID: PMC5685551 DOI: 10.1021/jacs.7b07661] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Arene amination is achieved by site-selective C-H zincation followed by copper-catalyzed coupling with O-benzoylhydroxylamines under mild conditions. Key to this success is ortho-zincation mediated by lithium amidodiethylzincate base that is effective for a wide range of arenes, including nonactivated arenes bearing simple functionalities such as fluoride, chloride, ester, amide, ether, nitrile, and trifluoromethyl groups as well as heteroarenes including indole, thiophene, pyridine, and isoquinoline. An analogous C-H azidation is also accomplished using azidoiodinane for direct introduction of a useful azide group onto a broad scope of arenes and heteroarenes. These new transformations offer rapid access to valuable and diverse chemical space of aminoarenes. Their broad applications in organic synthesis and drug discovery are demonstrated in the synthesis of novel analogues of natural product (-)-nicotine and antidepressant sertraline by late-stage amination and azidation reactions.
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Affiliation(s)
- Charles E. Hendrick
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Katie J. Bitting
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Seoyoung Cho
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Qiu Wang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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24
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Tan SP, Ahmad K, Nafiah MA. A direct FeCl3-catalyzed cross-coupling and cyclization reactions: A new approach to the construction of functionalized pyrano[3,2-a]carbazole derivatives. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Hwang Y, Park Y, Chang S. Mechanism-Driven Approach To Develop a Mild and Versatile C−H Amidation through IrIIICatalysis. Chemistry 2017; 23:11147-11152. [DOI: 10.1002/chem.201702397] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 (Republic of Korea) and Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yoonsu Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 (Republic of Korea) and Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 (Republic of Korea) and Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
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26
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Hypervalent Iodine Reagents in High Valent Transition Metal Chemistry. Molecules 2017; 22:molecules22050780. [PMID: 28498333 PMCID: PMC6154742 DOI: 10.3390/molecules22050780] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 01/12/2023] Open
Abstract
Over the last 20 years, high valent metal complexes have evolved from mere curiosities to being at the forefront of modern catalytic method development. This approach has enabled transformations complimentary to those possible via traditional manifolds, most prominently carbon-heteroatom bond formation. Key to the advancement of this chemistry has been the identification of oxidants that are capable of accessing these high oxidation state complexes. The oxidant has to be both powerful enough to achieve the desired oxidation as well as provide heteroatom ligands for transfer to the metal center; these heteroatoms are often subsequently transferred to the substrate via reductive elimination. Herein we will review the central role that hypervalent iodine reagents have played in this aspect, providing an ideal balance of versatile reactivity, heteroatom ligands, and mild reaction conditions. Furthermore, these reagents are environmentally benign, non-toxic, and relatively inexpensive compared to other inorganic oxidants. We will cover advancements in both catalysis and high valent complex isolation with a key focus on the subtle effects that oxidant choice can have on reaction outcome, as well as limitations of current reagents.
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27
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Catalytic Dehydrogenative C–H Imidation of Arenes Enabled by Photo-generated Hole Donation to Sulfonimide. Chem 2017. [DOI: 10.1016/j.chempr.2017.02.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Park Y, Kim Y, Chang S. Transition Metal-Catalyzed C-H Amination: Scope, Mechanism, and Applications. Chem Rev 2017; 117:9247-9301. [PMID: 28051855 DOI: 10.1021/acs.chemrev.6b00644] [Citation(s) in RCA: 1544] [Impact Index Per Article: 220.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Catalytic transformation of ubiquitous C-H bonds into valuable C-N bonds offers an efficient synthetic approach to construct N-functionalized molecules. Over the last few decades, transition metal catalysis has been repeatedly proven to be a powerful tool for the direct conversion of cheap hydrocarbons to synthetically versatile amino-containing compounds. This Review comprehensively highlights recent advances in intra- and intermolecular C-H amination reactions utilizing late transition metal-based catalysts. Initial discovery, mechanistic study, and additional applications were categorized on the basis of the mechanistic scaffolds and types of reactions. Reactivity and selectivity of novel systems are discussed in three sections, with each being defined by a proposed working mode.
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Affiliation(s)
- Yoonsu Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute of Basic Science (IBS) , Daejeon 34141, Republic of Korea
| | - Youyoung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute of Basic Science (IBS) , Daejeon 34141, Republic of Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute of Basic Science (IBS) , Daejeon 34141, Republic of Korea
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29
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Albayer M, Dutton JL. Reactions of Trivalent Iodine Reagents with Classic Iridium and Rhodium Complexes. Aust J Chem 2017. [DOI: 10.1071/ch17173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this work, the reactions of iodine(iii) reagents (PhI(L)2: L = pyridine, acetate (OAc−), triflate (OTf−)) with iridium(i) and rhodium(i) complexes (Vaskas’s compound, Wilkinson’s catalyst, and bis[bis(diphenylphosphino)ethane]rhodium(i) triflate) are reported. In all cases, the reactions resulted in two-electron oxidation of the metal complexes. Mixtures of products were observed in the reactions of Iiii reagents with Vaska’s compound and Wilkinson’s catalyst via ligand exchange and anion scrambling. In the case of reacting Iiii reagents with chelating ligand-containing bis[bis(diphenylphosphino)ethane]rhodium(i) triflate, no scrambling was observed.
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Park Y, Heo J, Baik MH, Chang S. Why is the Ir(III)-Mediated Amido Transfer Much Faster Than the Rh(III)-Mediated Reaction? A Combined Experimental and Computational Study. J Am Chem Soc 2016; 138:14020-14029. [DOI: 10.1021/jacs.6b08211] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yoonsu Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon
Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Joon Heo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon
Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon
Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
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31
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Singh R, Nagesh K, Parameshwar M. Rhodium(II)-Catalyzed Undirected and Selective C(sp2)–H Amination en Route to Benzoxazolones. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02237] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ritesh Singh
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
| | - Kommu Nagesh
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
| | - Matam Parameshwar
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
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32
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Kim H, Park G, Park J, Chang S. A Facile Access to Primary Alkylamines and Anilines via Ir(III)-Catalyzed C–H Amidation Using Azidoformates. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01869] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Hyunwoo Kim
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 305-701, Korea
| | - Gyeongtae Park
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 305-701, Korea
| | - Juhyeon Park
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 305-701, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 305-701, Korea
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33
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Hu XH, Yang XF, Loh TP. Chelation-Assisted Rhodium-Catalyzed Direct Amidation with Amidobenziodoxolones: C(sp2)–H, C(sp3)–H, and Late-Stage Functionalizations. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02015] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xu-Hong Hu
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xiao-Fei Yang
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Teck-Peng Loh
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371, Singapore
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Bandara HMD, Jin D, Mantell MA, Field KD, Wang A, Narayanan RP, Deskins NA, Emmert MH. Non-directed aromatic C-H amination: catalytic and mechanistic studies enabled by Pd catalyst and reagent design. Catal Sci Technol 2016; 6:5304-5310. [PMID: 28066540 DOI: 10.1039/c6cy00457a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This manuscript describes the systematic development of pyridine-type ligands, which promote the Pd catalyzed, non-directed amination of benzene in combination with novel, hydroxylamine-based electrophilic amination reagents. DFT calculations and mechanistic experiments provide insights into the factors influencing the arene C-H amination protocol.
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Affiliation(s)
- H M D Bandara
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - D Jin
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - M A Mantell
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - K D Field
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - A Wang
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - R P Narayanan
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - N A Deskins
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - M H Emmert
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
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35
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Zhou Y, Yuan J, Yang Q, Xiao Q, Peng Y. Directing-Group-Assisted Transition-Metal-Catalyzed Direct Intermolecular C−H Amidation and Amination of Arenes. ChemCatChem 2016. [DOI: 10.1002/cctc.201600079] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yirong Zhou
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering; Jiangxi Normal University; No. 99 Ziyang Road Nanchang Jiangxi 330022 P.R. China
| | - Jianjun Yuan
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering; Jiangxi Normal University; No. 99 Ziyang Road Nanchang Jiangxi 330022 P.R. China
| | - Qin Yang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering; Jiangxi Normal University; No. 99 Ziyang Road Nanchang Jiangxi 330022 P.R. China
| | - Qiang Xiao
- Jiangxi Key Laboratory of Functional Organic Molecules; Jiangxi Science and Technology Normal University; No. 605 Fenglin Road Nanchang 330013 P.R. China
| | - Yiyuan Peng
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering; Jiangxi Normal University; No. 99 Ziyang Road Nanchang Jiangxi 330022 P.R. China
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36
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Nishikata T, Abela AR, Huang S, Lipshutz BH. Cationic Pd(II)-catalyzed C-H activation/cross-coupling reactions at room temperature: synthetic and mechanistic studies. Beilstein J Org Chem 2016; 12:1040-64. [PMID: 27340491 PMCID: PMC4902085 DOI: 10.3762/bjoc.12.99] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 04/28/2016] [Indexed: 11/23/2022] Open
Abstract
Cationic palladium(II) complexes have been found to be highly reactive towards aromatic C-H activation of arylureas at room temperature. A commercially available catalyst [Pd(MeCN)4](BF4)2 or a nitrile-free cationic palladium(II) complex generated in situ from the reaction of Pd(OAc)2 and HBF4, effectively catalyzes C-H activation/cross-coupling reactions between aryl iodides, arylboronic acids and acrylates under milder conditions than those previously reported. The nature of the directing group was found to be critical for achieving room temperature conditions, with the urea moiety the most effective in promoting facile coupling reactions at an ortho C-H position. This methodology has been utilized in a streamlined and efficient synthesis of boscalid, an agent produced on the kiloton scale annually and used to control a range of plant pathogens in broadacre and horticultural crops. Mechanistic investigations led to a proposed catalytic cycle involving three steps: (1) C-H activation to generate a cationic palladacycle; (2) reaction of the cationic palladacycle with an aryl iodide, arylboronic acid or acrylate, and (3) regeneration of the active cationic palladium catalyst. The reaction between a cationic palladium(II) complex and arylurea allowed the formation and isolation of the corresponding palladacycle intermediate, characterized by X-ray analysis. Roles of various additives in the stepwise process have also been studied.
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Affiliation(s)
- Takashi Nishikata
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Alexander R Abela
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Shenlin Huang
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Bruce H Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
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37
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Wang X, Jiao N. Rh- and Cu-Cocatalyzed Aerobic Oxidative Approach to Quinazolines via [4 + 2] C–H Annulation with Alkyl Azides. Org Lett 2016; 18:2150-3. [DOI: 10.1021/acs.orglett.6b00774] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyang Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University, Xue
Yuan Road 38, Beijing 100191, China
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University, Xue
Yuan Road 38, Beijing 100191, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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38
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Lucchetti N, Scalone M, Fantasia S, Muñiz K. An Improved Catalyst for Iodine(I/III)-Catalysed Intermolecular CH Amination. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600191] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
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Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
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40
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Jiao J, Murakami K, Itami K. Catalytic Methods for Aromatic C–H Amination: An Ideal Strategy for Nitrogen-Based Functional Molecules. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02417] [Citation(s) in RCA: 406] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jiao Jiao
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of
Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kei Murakami
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of
Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of
Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST,
ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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41
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Pi C, Cui X, Wu Y. Iridium-Catalyzed Direct C-H Sulfamidation of Aryl Nitrones with Sulfonyl Azides at Room Temperature. J Org Chem 2015; 80:7333-9. [PMID: 26182385 DOI: 10.1021/acs.joc.5b01377] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ir(III)-catalyzed direct C-H sulfamidation of aryl nitrones has been developed to synthesize various sulfamidated nitrones in moderate to excellent yields with excellent regioselectivity and broad functional group tolerance. This transformation could proceed smoothly at room temperature with low catalyst loading in the absence of external oxidants, acids, or bases. Molecular nitrogen was released as the sole byproduct, thus providing an environmentally benign sulfamidation process. And this protocol could efficiently apply to synthesize the substituted benzisoxazoline via one-step transformation from the product.
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Affiliation(s)
- Chao Pi
- †College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Xiuling Cui
- †College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China.,‡School of Biomedical Sciences, Engineering Research Centre of Molecular Medicine of Chinese Education Ministry, Xiamen Key Laboratory of Ocean and Gene Drugs, Institute of Molecular Medicine of Huaqiao University, Xiamen 361021, Fujian, P. R. China
| | - Yangjie Wu
- †College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China
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Hou K, Qi M, Liu J, Bao X, Schaefer HF. Mechanistic Investigations of the AuCl3-Catalyzed Nitrene Insertion into an Aromatic C—H Bond of Mesitylene. J Org Chem 2015; 80:5795-803. [DOI: 10.1021/acs.joc.5b00764] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kaipeng Hou
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Miao Qi
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Jiajun Liu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Xiaoguang Bao
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Henry F. Schaefer
- Center
for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, United States
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44
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Park Y, Park KT, Kim JG, Chang S. Mechanistic studies on the Rh(III)-mediated amido transfer process leading to robust C-H amination with a new type of amidating reagent. J Am Chem Soc 2015; 137:4534-42. [PMID: 25789561 DOI: 10.1021/jacs.5b01324] [Citation(s) in RCA: 331] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mechanistic investigations on the Cp*Rh(III)-catalyzed direct C-H amination reaction led us to reveal the new utility of 1,4,2-dioxazol-5-one and its derivatives as highly efficient amino sources. Stepwise analysis on the C-N bond-forming process showed that competitive binding of rhodium metal center to amidating reagent or substrate is closely related to the reaction efficiency. In this line, 1,4,2-dioxazol-5-ones were observed to have a strong affinity to the cationic Rh(III) giving rise to dramatically improved amidation efficiency when compared to azides. Kinetics and computational studies suggested that the high amidating reactivity of 1,4,2-dioxazol-5-one can also be attributed to the low activation energy of an imido-insertion process in addition to the high coordination ability. While the characterization of a cationic Cp*Rh(III) complex bearing an amidating reagent was achieved, its facile conversion to an amido-inserted rhodacycle allowed for a clear picture on the C-H amidation process. The newly developed amidating reagent of 1,4,2-dioxazol-5-ones was applicable to a broad range of substrates with high functional group tolerance, releasing carbon dioxide as a single byproduct. Additional attractive features of this amino source, such as they are more convenient to prepare, store, and use when compared to the corresponding azides, take a step closer toward an ideal C-H amination protocol.
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Affiliation(s)
- Yoonsu Park
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Republic of Korea
| | - Kyung Tae Park
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Republic of Korea
| | - Jeung Gon Kim
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Republic of Korea
| | - Sukbok Chang
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Republic of Korea
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45
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Korwar S, Brinkley K, Siamaki AR, Gupton BF, Ellis KC. Selective N-chelation-directed C-H activation reactions catalyzed by Pd(II) nanoparticles supported on multiwalled carbon nanotubes. Org Lett 2015; 17:1782-5. [PMID: 25789562 DOI: 10.1021/acs.orglett.5b00566] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
N-Chelation-directed C-H activation reactions that utilize the Pd(II)/Pd(IV) catalytic cycle have been previously reported. To date, these reactions employ only homogeneous palladium catalysts. The first use of a solid-supported Pd(II) catalyst [Pd(II) nanoparticles on multiwalled carbon nanotubes, Pd(II)/MWCNT] to carry out N-chelation-directed C-H to C-O, C-Cl, and C-Br transformations is reported. The results presented demonstrate that the solid-supported Pd(II)/MWCNT catalyst can effectively catalyze C-H activation reactions using the Pd(II)/Pd(IV) catalytic cycle.
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Affiliation(s)
- Sudha Korwar
- †Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States
| | - Kendra Brinkley
- ‡Department of Chemical and Life Sciences Engineering, School of Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Ali R Siamaki
- ‡Department of Chemical and Life Sciences Engineering, School of Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - B Frank Gupton
- ‡Department of Chemical and Life Sciences Engineering, School of Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Keith C Ellis
- †Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States.,§Institute for Structural Biology and Drug Discovery and Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23219-1540, United States
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46
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Abstract
A new approach for the direct amination of 2-phenylpyridine derivatives using a diphthalimide-iodane and copper triflate has been developed. A series of different 2-phenylpyridine derivatives were aminated with yields up to 88%. Mechanistic investigations indicate that the reaction proceeds via a copper-mediated single electron transfer.
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Affiliation(s)
- Abhishek A Kantak
- Department of Chemistry, University of Rhode Island, 51 Lower College Rd., Kingston, RI 02881, USA.
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47
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Kawakami T, Murakami K, Itami K. Catalytic C-H imidation of aromatic cores of functional molecules: ligand-accelerated Cu catalysis and application to materials- and biology-oriented aromatics. J Am Chem Soc 2015; 137:2460-3. [PMID: 25669319 DOI: 10.1021/ja5130012] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Versatile imidation of aromatic C-H bonds was accomplished. In the presence of copper bromide and 6,6'-dimethyl-2,2'-bipyridyl, a range of aromatics, such as polycyclic aromatic hydrocarbons, aromatic bowls, porphyrins, heteroaromatics, and natural products, can be imidated by N-fluorobenzenesulfonimide. A dramatic ligand-accelerated copper catalysis and an interesting kinetic profile were uncovered.
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Affiliation(s)
- Takahiro Kawakami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University , Chikusa, Nagoya 464-8602, Japan
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48
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Roy S, Pramanik S, Ghorui T, Pramanik K. Insight into luminescent bisazoaromatic CNN pincer palladacycle: synthesis, structure, electrochemistry and some catalytic applications in C–C coupling. RSC Adv 2015. [DOI: 10.1039/c4ra16584e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The 2-(phenylazo)azobenzene furnished novel palladacycles in excellent yield, which showed luminescence at rt and catalytic activity. The optoelectronic and electrochemical responses were substantiated with DFT and TDDFT.
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Affiliation(s)
- Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
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49
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He P, Tian Q, Kuang C. Palladium-catalyzed ortho-C–H alkenylation of 2-benzyl-1,2,3-triazoles. Org Biomol Chem 2015; 13:7146-8. [DOI: 10.1039/c5ob00973a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A mild and efficient method for the direct alkenylation of 2-benzyl-1,2,3-triazoles via Pd-catalyzed C–H bond activation was developed.
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Affiliation(s)
- Ping He
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
| | - Qingshan Tian
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
| | - Chunxiang Kuang
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
- Shanghai Key Lab of Chemical Assessment and Sustainability
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50
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Weinstein AB, Stahl SS. Palladium Catalyzed Aryl C-H Amination with O 2 via In Situ Formation of Peroxide-Based Oxidant(s) from Dioxane. Catal Sci Technol 2014; 4:4301-4307. [PMID: 25530837 PMCID: PMC4270377 DOI: 10.1039/c4cy00764f] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
(DAF)Pd(OAc)2 (DAF = 4,5-diazafluorenone) catalyzes aerobic intramolecular aryl C-H amination with N-benzenesulfonyl-2-aminobiphenyl in dioxane to afford the corresponding carbazole product. Mechanistic studies show that the reaction involves in situ generation of peroxide species from 1,4-dioxane and O2, and the reaction further benefits from the presence of glycolic acid, an oxidative decomposition product of dioxane. An induction period observed for the formation of the carbazole product correlates with the formation of 1,4-dioxan-2-hydroperoxide via autoxidation of 1,4-dioxane, and the in situ-generated peroxide is proposed to serve as the reactive oxidant in the reaction. These findings have important implications for the palladium-catalyzed aerobic oxidation reactions conducted in ethereal solvents.
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Affiliation(s)
- Adam B. Weinstein
- Department of Chemistry, University of Wisconsin�Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin�Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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