1
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Horbaczewskyj CS, Fairlamb IJS. Pd-Catalyzed Cross-Couplings: On the Importance of the Catalyst Quantity Descriptors, mol % and ppm. Org Process Res Dev 2022; 26:2240-2269. [PMID: 36032362 PMCID: PMC9396667 DOI: 10.1021/acs.oprd.2c00051] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/26/2022]
Abstract
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This Review examines parts per million (ppm) palladium
concentrations
in catalytic cross-coupling reactions and their relationship with
mole percentage (mol %). Most studies in catalytic cross-coupling
chemistry have historically focused on the concentration ratio between
(pre)catalyst and the limiting reagent (substrate), expressed as mol
%. Several recent papers have outlined the use of “ppm level”
palladium as an alternative means of describing catalytic cross-coupling
reaction systems. This led us to delve deeper into the literature
to assess whether “ppm level” palladium is a practically
useful descriptor of catalyst quantities in palladium-catalyzed cross-coupling
reactions. Indeed, we conjectured that many reactions could, unknowingly,
have employed low “ppm levels” of palladium (pre)catalyst,
and generally, what would the spread of ppm palladium look like across
a selection of studies reported across the vast array of the cross-coupling
chemistry literature. In a few selected examples, we have examined
other metal catalyst systems for comparison with palladium.
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Affiliation(s)
| | - Ian J. S. Fairlamb
- University of York, Heslington, York, North Yorkshire, YO10 5DD, United Kingdom
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2
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Newar UD, Borra S, Maurya RA. Visible-Light 2,4-Dinitrophenol-Mediated Photoannulation of α-Azidochalcones into 2,5-Diaryloxazoles. Org Lett 2022; 24:4454-4458. [PMID: 35700202 DOI: 10.1021/acs.orglett.2c01691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel and efficient visible-light 2,4-dinitrophenol (2,4-DNP) mediated photoannulation of α-azidochalcones into 2,5-diaryloxazoles was developed. The carbon-carbon double bond of α-azidochalcone was cleaved, leading to the formation of new C-O and C-N bonds in the photoannulation. Control experiments were carried out, and a plausible mechanism of the photoannulation was proposed. The scope of the reaction was studied by synthesizing a series of 2,5-diaryloxazoles including two naturally occurring oxazoles (Texamine and Balsoxin) in excellent yields.
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Affiliation(s)
- Uma Devi Newar
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Satheesh Borra
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ram Awatar Maurya
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat 785006, India
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3
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Chen J, Wang F, Huang Y, Jia X, Zhuang D, Wan Z, Li Z. Remote carbamate-directed site-selective benzylic C–H oxygenation via synergistic copper/TEMPO catalysis at room temperature. Org Chem Front 2022. [DOI: 10.1039/d2qo00435f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A benzylic C(sp3)–H oxygenation with water at room temperature through a ligand- and additive-free synergistic copper/TEMPO-catalysed radical relay pathway and a remote directing strategy is described.
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Affiliation(s)
- Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Fang Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yanping Huang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Engineering Experimental Teaching Centre, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaoqi Jia
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Dailin Zhuang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Zhenyang Wan
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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4
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Sengupta S, Das P. C-H activation reactions of nitroarenes: current status and outlook. Org Biomol Chem 2021; 19:8409-8424. [PMID: 34554174 DOI: 10.1039/d1ob01455b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ring substitution reactions of nitroarenes remain an under-developed area of organic synthesis, confined to the narrow domains of SNAr and SNArH reactions. While searching for alternative methodologies, we took stock of the C-H activation reactions of nitroarenes which unearthed a variety of examples of nitro directed regioselective C-H functionalization reactions such as ortho-arylation, -benzylation/alkylation, and -allylation, oxidative Heck and C-H arylation reactions on (hetero)aromatic rings. A collective account of these reactions is presented in this review to showcase the existing landscape of C-H activation reactions of nitroarenes, to create interest in this field for further development and propagate this strategy as a superior alternative for ring substitution reactions of nitroarenes. The prospect of merging the C-H activation of nitroarenes with C-NO2 activation, thereby harnessing NO2 as a transformable multitasking directing group, is also illustrated.
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Affiliation(s)
- Saumitra Sengupta
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Dhanbad-826004, India.
| | - Parthasarathi Das
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Dhanbad-826004, India.
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5
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Yang D, Chen J, Huang Y, Pan H, Shi J, Zhang Y, Wang F, Li Z. Room-temperature Formal Aza-Wacker Cyclization through Synergistic Copper/TEMPO-catalyzed Radical Relay. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Dong Yang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Yanping Huang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
- Engineering Experimental Teaching Centre, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Huiquan Pan
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Jingqi Shi
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Yingyue Zhang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Fang Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
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6
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Yang D, Shi J, Chen J, Jia X, Shi C, Ma L, Li Z. Visible-light enabled room-temperature dealkylative imidation of secondary and tertiary amines promoted by aerobic ruthenium catalysis. RSC Adv 2021; 11:18966-18973. [PMID: 35478631 PMCID: PMC9033495 DOI: 10.1039/d0ra10517a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/19/2021] [Indexed: 02/06/2023] Open
Abstract
Employing sulfonyl azide as a nitrogen donor, a visible-light-enabled aerobic dealkylative imidation of tertiary and secondary amines involving C(sp3)–C(sp3) bond cleavage with moderate to excellent yields at room temperature is described. It has been demonstrated that this imidation could take place spontaneously upon visible-light irradiation, and could be facilitated considerably by a ruthenium photocatalyst and oxygen. An alternative mechanism to the previous aerobic photoredox pathway has also been proposed. A photoredox dealkylative imidation of tertiary and secondary amines with sulfonyl azide facilitated by aerobic ruthenium-catalysis to afford sulfonyl amidine at room temperature is reported.![]()
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Affiliation(s)
- Dong Yang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Jingqi Shi
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Xiaoqi Jia
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Cuiying Shi
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
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7
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Oberheide A, Arndt H. Effective C5‐Arylation of Peptide‐Integrated Oxazoles: Almazole D. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ansgar Oberheide
- Friedrich-Schiller-Universität Jena Institut für Organische Chemie und Makromolekulare Chemie Humboldstr. 10 D-07743 Jena
| | - Hans‐Dieter Arndt
- Friedrich-Schiller-Universität Jena Institut für Organische Chemie und Makromolekulare Chemie Humboldstr. 10 D-07743 Jena
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8
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Shao Z, Wang F, Shi J, Ma L, Li Z. Synergetic copper/TEMPO-catalysed benzylic C–H imidation with N-fluorobenzenesulfonimide at room temperature and tandem conversions with alcohols or arenes. Org Chem Front 2021. [DOI: 10.1039/d1qo00340b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A remote carbamate-directed benzylic C–H imidation with NFSI at room temperature through synergetic CuCl-TEMPO catalysis and tandem alkoxylation or arylation with alcohols or arenes are described.
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Affiliation(s)
- Zhong Shao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Fang Wang
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jingqi Shi
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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9
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Shi C, Miao Q, Ma L, Lu T, Yang D, Chen J, Li Z. Room‐Temperature C‐H Bromination and Iodination with Sodium Bromide and Sodium Iodide Using
N
‐Fluorobenzenesulfonimide as an Oxidant. ChemistrySelect 2019. [DOI: 10.1002/slct.201901456] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cuiying Shi
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
| | - Qi Miao
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
| | - Lifang Ma
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
| | - Tao Lu
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
| | - Dong Yang
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
| | - Jiaming Chen
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological EngineeringSchool of Chemical Engineering, Sichuan University No.24 South Section 1, Yihuan Road Chengdu 610065 China
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10
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Achar TK, Biswas JP, Porey S, Pal T, Ramakrishna K, Maiti S, Maiti D. Palladium-Catalyzed Template Directed C-5 Selective Olefination of Thiazoles. J Org Chem 2019; 84:8315-8321. [DOI: 10.1021/acs.joc.9b01074] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tapas Kumar Achar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jyoti Prasad Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Tapas Pal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Kankanala Ramakrishna
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Siddhartha Maiti
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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11
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Lei B, Miao Q, Ma L, Fu R, Hu F, Ni N, Li Z. Efficient metal-free aminoiodination of alkenes with N-fluorobenzenesulfonimide under mild conditions. Org Biomol Chem 2019; 17:2126-2133. [DOI: 10.1039/c8ob03019g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel regioselective and stereoselective transition-metal-free aminoiodination of alkenes through an iodonium intermediate using NFSI as both the oxidant and amino precursor under mild conditions with a broad alkene scope is disclosed.
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Affiliation(s)
- Bowen Lei
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qi Miao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ruoqi Fu
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Fangrong Hu
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ni Ni
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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12
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Miao Q, Shao Z, Shi C, Ma L, Wang F, Fu R, Gao H, Li Z. Metal-free C–H amination of arene with N-fluorobenzenesulfonimide catalysed by nitroxyl radicals at room temperature. Chem Commun (Camb) 2019; 55:7331-7334. [DOI: 10.1039/c9cc02739d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The first C–H amination of arene with NFSI via organocatalysis is disclosed, which can be achieved at room temperature with a broad substrate scope.
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Affiliation(s)
- Qi Miao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zhong Shao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Cuiying Shi
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Fang Wang
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ruoqi Fu
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Haochen Gao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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13
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Carlucci C, Tota A, Colella M, Ronamazzi G, Clarkson GJ, Luisi R, Degennaro L. Use of Hypervalent Iodine in the Synthesis of Isomeric Dihydrooxazoles. Chem Heterocycl Compd (N Y) 2018. [DOI: 10.1007/s10593-018-2288-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Choy PY, Wong SM, Kapdi A, Kwong FY. Recent developments in palladium-catalysed non-directed coupling of (hetero)arene C–H bonds with C–Z (Z = B, Si, Sn, S, N, C, H) bonds in bi(hetero)aryl synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo00693d] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review article describes the palladium-catalysed non-directed coupling of (hetero)arene C–H bonds with C(Ar)–Z (Z = B, Si, Sn, S, N, C, H) bonds for facile bi(hetero)aryl synthesis in the past 10 years.
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Affiliation(s)
- Pui Ying Choy
- Department of Chemistry
- The Chinese University of Hong Kong
- New Territories
- Hong Kong
| | - Shun Man Wong
- Department of Applied Biology and Chemical Technology
- The Hong Kong Polytechnic University
- Hong Kong
| | - Anant Kapdi
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
| | - Fuk Yee Kwong
- Department of Chemistry
- The Chinese University of Hong Kong
- New Territories
- Hong Kong
- Department of Applied Biology and Chemical Technology
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15
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Lei B, Wang X, Ma L, Li Y, Li Z. NFSI-participated intermolecular aminoazidation of alkene through iron catalysis. Org Biomol Chem 2018; 16:3109-3113. [DOI: 10.1039/c8ob00699g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An iron-catalysed intermolecular vicinal aminoazidation of alkene with NFSI is reported, with broader alkene scope comparing to previously reported aminoazidation.
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Affiliation(s)
- Bowen Lei
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xiaojiao Wang
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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16
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Wang X, Lei B, Ma L, Zhu L, Zhang X, Zuo H, Zhuang D, Li Z. Cobalt-Catalyzed Cross-Dehydrogenative C(sp 2 )-C(sp 3 ) Coupling of Oxazole/Thiazole with Ether or Cycloalkane. Chem Asian J 2017; 12:2799-2803. [PMID: 28929591 DOI: 10.1002/asia.201701258] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 09/18/2017] [Indexed: 11/08/2022]
Abstract
Direct C5-alkylation of oxazole/thiazole with ether or cycloalkane has been achieved through a cobalt-catalyzed cross-dehydrogenative coupling (CDC) process in moderate to good yields. This transformation represents the first C(sp2 )-C(sp3 ) cross-coupling at the C5-position of the oxazole/thiazole via double C-H bond cleavages. Various functional groups on oxazole/thiazole substrates, as well as water and air, are well-tolerated with this concise and practical protocol, constituting straightforward access to heterocycles with great medicinal significance. A preliminary mechanism involving a radical process has also been proposed.
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Affiliation(s)
- Xiaojiao Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Bowen Lei
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Lisi Zhu
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Xinyue Zhang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Hao Zuo
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Dailin Zhuang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610065, China
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17
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Wang X, Lei B, Ma L, Jiao H, Xing W, Chen J, Li Z. Iron-catalyzed C(5)−H Imidation of Azole with N
-Fluorobenzenesulfonimide. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701124] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaojiao Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Bowen Lei
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Huixuan Jiao
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Wenhua Xing
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu 610065 People's Republic of China
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18
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Abstract
Transition metal-mediated C-H bond activation and functionalization represent one of the most straightforward and powerful tools in modern organic synthetic chemistry. Bi(hetero)aryls are privileged π-conjugated structural cores in biologically active molecules, organic functional materials, ligands, and organic synthetic intermediates. The oxidative C-H/C-H coupling reactions between two (hetero)arenes through 2-fold C-H activation offer a valuable opportunity for rapid assembly of diverse bi(hetero)aryls and further exploitation of their applications in pharmaceutical and material sciences. This review provides a comprehensive overview of the fundamentals and applications of transition metal-mediated/catalyzed oxidative C-H/C-H coupling reactions between two (hetero)arenes. The substrate scope, limitation, reaction mechanism, regioselectivity, and chemoselectivity, as well as related control strategies of these reactions are discussed. Additionally, the applications of these established methods in the synthesis of natural products and exploitation of new organic functional materials are exemplified. In the last section, a short introduction on oxidant- or Lewis acid-mediated oxidative Ar-H/Ar-H coupling reactions is presented, considering that it is a very powerful method for the construction of biaryl units and polycylic arenes.
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Affiliation(s)
- Yudong Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
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19
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Lei B, Wang X, Ma L, Jiao H, Zhu L, Li Z. DDQ-promoted direct C5-alkylation of oxazoles with alkylboronic acids via palladium-catalysed C–H bond activation. Org Biomol Chem 2017; 15:6084-6088. [DOI: 10.1039/c7ob01083d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The first protocol for the direct C5-alkylation of oxazoles through transition-metal-catalysed C(5)–H bond activation.
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Affiliation(s)
- Bowen Lei
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xiaojiao Wang
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Huixuan Jiao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lisi Zhu
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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20
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Banerji B, Chatterjee S, Chandrasekhar K, Bera S, Majumder L, Prodhan C, Chaudhuri K. Expedient synthesis of a phenanthro-imidazo-pyridine fused heteropolynuclear framework via CDC coupling: a new class of luminophores. Org Biomol Chem 2017; 15:4130-4134. [DOI: 10.1039/c7ob00564d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We herein report the design and synthesis of a group of fused phenanthro-imidazo[1,2-a]pyridine derivatives as a new class of luminescent materials through a Pd(ii) catalyzed intramolecular CDC coupling.
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Affiliation(s)
- Biswadip Banerji
- Organic & Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Satadru Chatterjee
- Organic & Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
| | - K. Chandrasekhar
- Organic & Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
| | - Suvankar Bera
- Organic & Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
| | - Leena Majumder
- Organic & Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
| | - Chandraday Prodhan
- Molecular Genetics
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
| | - Keya Chaudhuri
- Molecular Genetics
- Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata
- India
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21
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Guo Q, Wu D, You J. Oxidative Direct Arylation Polymerization Using Oxygen as the Sole Oxidant: Facile, Green Access to Bithiazole-Based Polymers. CHEMSUSCHEM 2016; 9:2765-2768. [PMID: 27553577 DOI: 10.1002/cssc.201600827] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Indexed: 06/06/2023]
Abstract
The most appealing oxidant, molecular oxygen, is employed for the first time as the sole oxidant in the transition metal-catalyzed oxidative direct arylation polymerization (C-H/C-H-type DArP), which eliminates by-product formation of stoichiometric metal salts except for water . Compared to conventional approaches, other than the avoidance of an end-capping procedure, the current protocol is remarkably advanced in the aspect of eco-friendliness, step- and cost-economy, and, of special significance, the purity of polymer products. As illustrative examples, six 5,5'-bithiazole-based polymers are synthesized using this new method, demonstrating higher number-average molecular weight (Mn up to 33 700) in better yields (up to 93 %) through only one step. The evolution of C-H/C-H-type DArP from heavy metal salts to O2 alone as the oxidant could solve the problem of metal residues in polymers, which is considered harmful to the performance of devices.
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Affiliation(s)
- Qiang Guo
- Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
- College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.
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22
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Choi H, Min M, Peng Q, Kang D, Paton RS, Hong S. Unraveling innate substrate control in site-selective palladium-catalyzed C-H heterocycle functionalization. Chem Sci 2016; 7:3900-3909. [PMID: 30155034 PMCID: PMC6013790 DOI: 10.1039/c5sc04590h] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 03/02/2016] [Indexed: 11/23/2022] Open
Abstract
Understanding the regioselectivity of C-H activation in the absence of directing groups is an important step towards the design of site-selective C-H functionalizations. The Pd(ii)-catalyzed direct arylation of chromones and enaminones provides an intriguing example where a simple substitution leads to a divergence in substrate-controlled site-selectivity. We describe computational and experimental studies which reveal this results from a switch in mechanism and therefore the selectivity-determining step. We present computational results and experimentally measured kinetic isotope effects and labelling studies consistent with this proposal. The C-H activation of these substrates proceeds via a CMD mechanism, which favors more electron rich positions and therefore displays a pronounced kinetic selectivity for the C3-position. However, C2-selective carbopalladation is also a competitive pathway for chromones so that the overall regiochemical outcome depends on which substrate undergoes activation first. Our studies provide insight into the site-selectivity based on the favorability of two competing CMD and carbopalladation processes of the substrates undergoing coupling. This model can be utilized to predict the regioselectivity of coumarins which are proficient substrates for carbopalladation. Furthermore, our model is able to account for the opposite selectivities observed for enaminone and chromone, and explains how a less reactive coupling partner leads to a switch in selectivity.
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Affiliation(s)
- Hwanho Choi
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK . ;
| | - Minsik Min
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon , 34141 Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , 34141 Korea
| | - Qian Peng
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK . ;
| | - Dahye Kang
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon , 34141 Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , 34141 Korea
| | - Robert S Paton
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK . ;
| | - Sungwoo Hong
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon , 34141 Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , 34141 Korea
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23
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Liu XW, Shi JL, Wei JB, Yang C, Yan JX, Peng K, Dai L, Li CG, Wang BQ, Shi ZJ. Diversified syntheses of multifunctionalized thiazole derivatives via regioselective and programmed C-H activation. Chem Commun (Camb) 2016; 51:4599-602. [PMID: 25687354 DOI: 10.1039/c4cc10419f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The sequential construction of diversified multifunctionalized thiazole derivatives through Pd-catalyzed regioselective C-H alkenylation has been accomplished. This versatile approach provides the diversified thiazole derivatives featuring orthogonal substitution patterns at the C-2, C-4 and C-5 positions from mono-substituted (2- or 4-substituted) thiazole derivatives or even more challenging simple thiazole.
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Affiliation(s)
- Xiang-Wei Liu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China.
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24
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Jiang H, Gao S, Xu J, Wu X, Lin A, Yao H. Multiple Roles of the Pyrimidyl Group in the Rhodium‐Catalyzed Regioselective Synthesis and Functionalization of Indole‐3‐carboxylic Acid Esters. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500769] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hui Jiang
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China, Fax: (+86)‐25‐8327‐1042
| | - Shang Gao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China, Fax: (+86)‐25‐8327‐1042
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China, Fax: (+86)‐25‐8327‐1042
| | - Xiaoming Wu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China, Fax: (+86)‐25‐8327‐1042
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China, Fax: (+86)‐25‐8327‐1042
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China, Fax: (+86)‐25‐8327‐1042
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25
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Fang X, Zhang K, Yao H, Huang Y. Cu(i)-Catalyzed oxidative homo-coupling of thiazoline-4-carboxylates: synthesis of 4,4′-bithiazoline derivatives. Org Biomol Chem 2016; 14:8030-4. [DOI: 10.1039/c6ob01471b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Cu(i)-Catalyzed oxidative homo-coupling of thiazoline-4-carboxylates with good functional group tolerance has been developed.
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Affiliation(s)
- Xinxin Fang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Kaifan Zhang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yue Huang
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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26
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Sun P, Wu Y, Huang Y, Wu X, Xu J, Yao H, Lin A. Rh(iii)-catalyzed redox-neutral annulation of azo and diazo compounds: one-step access to cinnolines. Org Chem Front 2016. [DOI: 10.1039/c5qo00331h] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cinnolines were synthesized in one step from azo and diazo compounds via a Rh(iii)-catalyzed redox-neutral C–H activation and C–N bond formation strategy.
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Affiliation(s)
- Peng Sun
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Youzhi Wu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yue Huang
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Xiaoming Wu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
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27
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Liu C, Yuan J, Gao M, Tang S, Li W, Shi R, Lei A. Oxidative Coupling between Two Hydrocarbons: An Update of Recent C–H Functionalizations. Chem Rev 2015; 115:12138-204. [DOI: 10.1021/cr500431s] [Citation(s) in RCA: 836] [Impact Index Per Article: 92.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chao Liu
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Jiwen Yuan
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Meng Gao
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, People’s Republic of China
| | - Shan Tang
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Wu Li
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Renyi Shi
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Institute for Advanced Studies
(IAS), Wuhan University, Wuhan 430072, People’s Republic of China
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, People’s Republic of China
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28
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Sun P, Wu Y, Yang T, Wu X, Xu J, Lin A, Yao H. Synthesis of Heterocycle-fused PyridineN-Oxides from Oximes and Diazo CompoundsviaRhIII-Catalyzed CH Activation and Annulation. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500125] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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29
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Chen X, Wu Y, Xu J, Yao H, Lin A, Huang Y. Rh(iii)-catalyzed cyclization reaction of azoles with alkynes: efficient synthesis of azole-fused-pyridines. Org Biomol Chem 2015; 13:9186-9. [DOI: 10.1039/c5ob01338k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Rh(iii)-catalyzed cyclization of azoles with alkynes has been developed to construct azole-fused-pyridines in good to excellent yields.
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Affiliation(s)
- Xuebing Chen
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Youzhi Wu
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yue Huang
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P. R. China
- Department of Organic Chemistry
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30
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Zhou H, Gai K, Lin A, Xu J, Wu X, Yao H. Palladium-catalyzed oxidative cross-coupling of azole-4-carboxylates with indoles: an approach to the synthesis of pimprinine. Org Biomol Chem 2015; 13:1243-8. [DOI: 10.1039/c4ob01844c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A palladium-catalyzed oxidative cross-coupling reaction between azole-4-carboxylates and indoles forming 5-(3-indolyl)azoles with excellent regioselectivity has been developed.
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Affiliation(s)
- Haipin Zhou
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Kuo Gai
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Xiaoming Wu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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31
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Qin D, Wang J, Qin X, Wang C, Gao G, You J. Rh(iii)-catalyzed oxime ether-directed heteroarylation of arene through oxidative C–H/C–H cross-coupling. Chem Commun (Camb) 2015; 51:6190-3. [PMID: 25753941 DOI: 10.1039/c5cc00387c] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A rhodium(iii)-catalyzed dehydrogenative cross-coupling reaction has been developed for the synthesis of bi(hetero)aryl scaffolds by using oxime ethers as the directing group. This protocol features a relatively broad substrate scope and a good tolerance of functional groups.
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Affiliation(s)
- Dekun Qin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry, and State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
- Chengdu 610064
| | - Jing Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry, and State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
- Chengdu 610064
| | - Xurong Qin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry, and State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
- Chengdu 610064
| | - Chunxia Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry, and State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
- Chengdu 610064
| | - Ge Gao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry, and State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
- Chengdu 610064
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry, and State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
- Chengdu 610064
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32
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Bai Y, Chen W, Chen Y, Huang H, Xiao F, Deng GJ. Copper-catalyzed oxidative cyclization of arylamides and β-diketones: new synthesis of 2,4,5-trisubstituted oxazoles. RSC Adv 2015. [DOI: 10.1039/c4ra14394a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Various 2,4,5-trisubstituted oxazoles were prepared from benzamides and β-diketones using CuBr as the sole catalyst.
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Affiliation(s)
- Yang Bai
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Wen Chen
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Ya Chen
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Huawen Huang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
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33
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Jiao LY, Smirnov P, Oestreich M. Exceptionally Mild Palladium(II)-Catalyzed Dehydrogenative C–H/C–H Arylation of Indolines at the C-7 Position under Air. Org Lett 2014; 16:6020-3. [DOI: 10.1021/ol503035z] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lin-Yu Jiao
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Polina Smirnov
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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34
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Huang Y, Wu D, Huang J, Guo Q, Li J, You J. Use of the Wilkinson Catalyst for theortho-CH Heteroarylation of Aromatic Amines: Facile Access to Highly Extended π-Conjugated Heteroacenes for Organic Semiconductors. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406445] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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35
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Huang Y, Wu D, Huang J, Guo Q, Li J, You J. Use of the Wilkinson Catalyst for theortho-CH Heteroarylation of Aromatic Amines: Facile Access to Highly Extended π-Conjugated Heteroacenes for Organic Semiconductors. Angew Chem Int Ed Engl 2014; 53:12158-62. [DOI: 10.1002/anie.201406445] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Indexed: 01/01/2023]
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36
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Zhang H. Highly regioselective ruthenium-catalyzed direct arylation of thiazolo[3,2-b]-1,2,4-triazoles with aryl iodides and aryl bromides via C–H bond activation. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.12.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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37
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Wang S, Liu W, Cen J, Liao J, Huang J, Zhan H. Pd-catalyzed oxidative cross-coupling of imidazo[1,2-a]pyridine with arenes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.069] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rossi R, Bellina F, Lessi M, Manzini C. Cross-Coupling of Heteroarenes by CH Functionalization: Recent Progress towards Direct Arylation and Heteroarylation Reactions Involving Heteroarenes Containing One Heteroatom. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300922] [Citation(s) in RCA: 366] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Abstract
2,5- and 2,4,5-substituted oxazoles were prepared in one-pot by the NBS/Me2S-mediated cyclization of enamides in the presence of base.
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Affiliation(s)
- Niranjan Panda
- Department of Chemistry
- National Institute of Technology
- Rourkela-769008, India
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Storr TE, Namata F, Greaney MF. Palladium catalysed cross-dehydrogenative-coupling of 1,3,5-trialkoxybenzenes with simple arenes. Chem Commun (Camb) 2014; 50:13275-7. [DOI: 10.1039/c4cc06271j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The cross-dehydrogenative coupling of two arene C–H positions is reported, generating multi-ortho-substituted biaryls under Pd catalysis.
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Affiliation(s)
- Thomas E. Storr
- School of Chemistry
- University of Manchester
- Manchester M13 9PL, UK
| | - Faridah Namata
- School of Chemistry
- University of Manchester
- Manchester M13 9PL, UK
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41
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Wu Y, Wang J, Mao F, Kwong FY. Palladium-Catalyzed Cross-Dehydrogenative Functionalization of C(sp2)H Bonds. Chem Asian J 2013; 9:26-47. [DOI: 10.1002/asia.201300990] [Citation(s) in RCA: 236] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 12/17/2022]
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42
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Jiao LY, Oestreich M. Oxidative Palladium(II)-Catalyzed Dehydrogenative CH/CH Cross-Coupling of 2,3-Substituted Indolines with Arenes at the C7 Position. Chemistry 2013; 19:10845-8. [DOI: 10.1002/chem.201302140] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Indexed: 01/14/2023]
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43
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Orr D, Tolfrey A, Percy JM, Frieman J, Harrison ZA, Campbell-Crawford M, Patel VK. Single-Step Microwave-Mediated Synthesis of Oxazoles and Thiazoles from 3-Oxetanone: A Synthetic and Computational Study. Chemistry 2013; 19:9655-62. [DOI: 10.1002/chem.201301011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Indexed: 11/07/2022]
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44
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Bathula SR, Reddy MP, Viswanadham KKDR, Sathyanarayana P, Reddy MS. Access to Di- and Trisubstituted Oxazoles by NBS-Mediated Oxidative Cyclisation ofN-Acyl Amino Acid Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300421] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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45
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46
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Zhang M, Hu P, Zhou J, Wu G, Huang S, Su W. Pd-Catalyzed Multidehydrogenative Cross-Coupling between (Hetero)Arenes and Nitroethane to Construct β-Aryl Nitroethylenes. Org Lett 2013; 15:1718-21. [DOI: 10.1021/ol400507u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Min Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Peng Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Jun Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Ge Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Shijun Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Weiping Su
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
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47
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Reddy VP, Qiu R, Iwasaki T, Kambe N. Rhodium-Catalyzed Intermolecular Oxidative Cross-Coupling of (Hetero)Arenes with Chalcogenophenes. Org Lett 2013; 15:1290-3. [DOI: 10.1021/ol400230y] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Vutukuri Prakash Reddy
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Renhua Qiu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takanori Iwasaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Nobuaki Kambe
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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48
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Yamamoto Y, Tokuji S, Tanaka T, Yorimitsu H, Osuka A. Direct Arylation of Porphyrins with π-Extended Aryl Bromides under Ligand-free Fagnou-Hartwig Conditions. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201200198] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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Zhang G, Li Z, Huang Y, Xu J, Wu X, Yao H. Direct C3-alkenylation of pyridin-4(1H)-one via oxidative Heck coupling. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Jafarpour F, Hazrati H, Mohasselyazdi N, Khoobi M, Shafiee A. Palladium catalyzed dehydrogenative arylation of coumarins: an unexpected switch in regioselectivity. Chem Commun (Camb) 2013; 49:10935-7. [DOI: 10.1039/c3cc46959j] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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